Trinity Qt initial conversion

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdeedu@1157642 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

41 files changed, 865 insertions, 865 deletions

diff --git a/kmplot/kmplot/FktDlg.cpp b/kmplot/kmplot/FktDlg.cpp
index aef0b3f4..ac3d84f1 100644
--- a/kmplot/kmplot/FktDlg.cpp
+++ b/kmplot/kmplot/FktDlg.cpp
@@ -24,8 +24,8 @@
 */
 
 // Qt includes
-// #include <qpushbutton.h>
-// #include <qpopupmenu.h>
+// #include <tqpushbutton.h>
+// #include <tqpopupmenu.h>
 
 // KDE includes
 #include <kapplication.h>
@@ -33,9 +33,9 @@
 #include <klocale.h>
 #include <kmessagebox.h>
 #include <kpushbutton.h>
-#include <qcstring.h>
-#include <qcursor.h>
-#include <qheader.h>
+#include <tqcstring.h>
+#include <tqcursor.h>
+#include <tqheader.h>
 
 // locale includes
 #include "FktDlg.h"
@@ -49,17 +49,17 @@
 
 #include <kdebug.h>
 
-FktDlg::FktDlg( QWidget* parent, View *view ) : FktDlgData( parent, "editPlots" ), m_view(view)
+FktDlg::FktDlg( TQWidget* parent, View *view ) : FktDlgData( parent, "editPlots" ), m_view(view)
 {
-	connect( cmdCopyFunction, SIGNAL( clicked() ), this, SLOT( slotCopyFunction()) );
-	connect( cmdMoveFunction, SIGNAL( clicked() ), this, SLOT( slotMoveFunction()) );
-	connect( lb_fktliste, SIGNAL( doubleClicked(QListViewItem *, const QPoint &, int)), this, SLOT(lb_fktliste_doubleClicked(QListViewItem *, const QPoint &, int)) );
-	connect( lb_fktliste, SIGNAL( clicked(QListViewItem *)), this, SLOT(lb_fktliste_clicked(QListViewItem *)));
-	connect( lb_fktliste, SIGNAL( spacePressed(QListViewItem *)), this, SLOT(lb_fktliste_spacePressed(QListViewItem *)));
+	connect( cmdCopyFunction, TQT_SIGNAL( clicked() ), this, TQT_SLOT( slotCopyFunction()) );
+	connect( cmdMoveFunction, TQT_SIGNAL( clicked() ), this, TQT_SLOT( slotMoveFunction()) );
+	connect( lb_fktliste, TQT_SIGNAL( doubleClicked(TQListViewItem *, const TQPoint &, int)), this, TQT_SLOT(lb_fktliste_doubleClicked(TQListViewItem *, const TQPoint &, int)) );
+	connect( lb_fktliste, TQT_SIGNAL( clicked(TQListViewItem *)), this, TQT_SLOT(lb_fktliste_clicked(TQListViewItem *)));
+	connect( lb_fktliste, TQT_SIGNAL( spacePressed(TQListViewItem *)), this, TQT_SLOT(lb_fktliste_spacePressed(TQListViewItem *)));
 
 	lb_fktliste->addColumn( "" );
 	lb_fktliste->header()->hide();
-	lb_fktliste->setResizeMode( QListView::LastColumn );
+	lb_fktliste->setResizeMode( TQListView::LastColumn );
 }
 
 FktDlg::~FktDlg()
@@ -70,7 +70,7 @@ void FktDlg::slotDelete()
 {
 	if ( lb_fktliste->currentItem() == 0)
 		return;
-	QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
+	TQCheckListItem *currentItem = dynamic_cast<TQCheckListItem *>(lb_fktliste->currentItem());
 	if( currentItem->text()[0] == 'x' )
 	{
     // Delete pair of parametric function
@@ -93,18 +93,18 @@ void FktDlg::slotDelete()
 		PushButtonDel->setEnabled(false);
 }
 
-void FktDlg::lb_fktliste_doubleClicked( QListViewItem *, const QPoint &, int )
+void FktDlg::lb_fktliste_doubleClicked( TQListViewItem *, const TQPoint &, int )
 {
-	if ( mapFromGlobal(QCursor::pos()).x() <= 40 )
+	if ( mapFromGlobal(TQCursor::pos()).x() <= 40 )
 		return;
 	slotEdit();
 }
 
-void FktDlg::lb_fktliste_spacePressed( QListViewItem *item)
+void FktDlg::lb_fktliste_spacePressed( TQListViewItem *item)
 {
 	if ( !item )
 		return;
-	QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(item);
+	TQCheckListItem *currentItem = dynamic_cast<TQCheckListItem *>(item);
 	int id;
 	if ( currentItem->text()[0] == 'x' )
 		id = getParamId(currentItem->text());
@@ -118,9 +118,9 @@ void FktDlg::lb_fktliste_spacePressed( QListViewItem *item)
 	updateView();
 }
 
-void FktDlg::lb_fktliste_clicked( QListViewItem * item )
+void FktDlg::lb_fktliste_clicked( TQListViewItem * item )
 {
-	if ( mapFromGlobal(QCursor::pos()).x() > 40 )
+	if ( mapFromGlobal(TQCursor::pos()).x() > 40 )
 		return;
 	lb_fktliste_spacePressed(item);
 }
@@ -128,7 +128,7 @@ void FktDlg::lb_fktliste_clicked( QListViewItem * item )
 
 void FktDlg::slotEdit()
 {
-	QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
+	TQCheckListItem *currentItem = dynamic_cast<TQCheckListItem *>(lb_fktliste->currentItem());
 	if ( currentItem == 0 )
 	{
 		PushButtonEdit->setEnabled(false);
@@ -147,9 +147,9 @@ void FktDlg::slotEdit()
 		slotEditFunction( id );
 }
 
-int FktDlg::getId( const QString &f_str )
+int FktDlg::getId( const TQString &f_str )
 {
-	for( QValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
+	for( TQValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
 	{
 		if ( it->fstr == f_str )
 			return it->id;
@@ -157,10 +157,10 @@ int FktDlg::getId( const QString &f_str )
 	return -1;
 }
 
-int FktDlg::getParamId( const QString &f_str)
+int FktDlg::getParamId( const TQString &f_str)
 {
-	QString const fname = f_str.section( "(", 0, 0 );
-	for( QValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
+	TQString const fname = f_str.section( "(", 0, 0 );
+	for( TQValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
 	{
 		if ( it->fname == fname )
 			return it->id;
@@ -188,15 +188,15 @@ void FktDlg::slotEditFunction( int id )
 	if ( id==-1 ) editFunction->setCaption(i18n( "New Function Plot" ));
 	else editFunction->setCaption(i18n( "Edit Function Plot" ));
 	editFunction->initDialog( id );
-	if( editFunction->exec() == QDialog::Accepted )
+	if( editFunction->exec() == TQDialog::Accepted )
 	{
 		Ufkt *function = editFunction->functionItem();
-		QCheckListItem *item;
+		TQCheckListItem *item;
 		if( id == -1 ) //a new function
-			item = new QCheckListItem(lb_fktliste, function->fstr, QCheckListItem::CheckBox); //a new function
+			item = new TQCheckListItem(lb_fktliste, function->fstr, TQCheckListItem::CheckBox); //a new function
 		else //change a function
 		{
-			item = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
+			item = dynamic_cast<TQCheckListItem *>(lb_fktliste->currentItem());
 			item->setText(0, function->fstr );
 		}
 		item->setOn(function->f_mode);
@@ -212,18 +212,18 @@ void FktDlg::slotEditParametric( int x_id, int y_id)
 	if ( x_id==-1 && y_id==-1)
 		editParametric->setCaption(i18n( "New Parametric Plot" ));
 	editParametric->initDialog( x_id, y_id );
-	if( editParametric->exec() == QDialog::Accepted )
+	if( editParametric->exec() == TQDialog::Accepted )
 	{
 		Ufkt *function_y = editParametric->functionItem();
 		Ufkt *function_x = &m_view->parser()->ufkt[m_view->parser()->ixValue(function_y->id - 1)]; //get the x-function
-		QCheckListItem *item;
+		TQCheckListItem *item;
 		if( x_id == -1 ) //a new function
 		{
-			item = new QCheckListItem(lb_fktliste, function_x->fstr+";"+function_y->fstr, QCheckListItem::CheckBox);
+			item = new TQCheckListItem(lb_fktliste, function_x->fstr+";"+function_y->fstr, TQCheckListItem::CheckBox);
 		}
 		else //change a function
 		{
-			item = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
+			item = dynamic_cast<TQCheckListItem *>(lb_fktliste->currentItem());
 			item->setText(0, function_x->fstr+";"+function_y->fstr );
 		}
 		item->setOn(function_y->f_mode);
@@ -238,17 +238,17 @@ void FktDlg::slotEditPolar( int id )
 	KEditPolar* editPolar = new KEditPolar( m_view->parser(), this );
 	if ( id==-1) editPolar->setCaption(i18n( "New Polar Plot" ));
 	editPolar->initDialog( id );
-	if( editPolar->exec() == QDialog::Accepted )
+	if( editPolar->exec() == TQDialog::Accepted )
 	{
 		Ufkt *function = editPolar->functionItem();
-		QCheckListItem *item;
+		TQCheckListItem *item;
 		if( id == -1 ) // a new function
 		{
-			item = new QCheckListItem(lb_fktliste, function->fstr, QCheckListItem::CheckBox);
+			item = new TQCheckListItem(lb_fktliste, function->fstr, TQCheckListItem::CheckBox);
 		}
 		else //change a function
 		{
-			item = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
+			item = dynamic_cast<TQCheckListItem *>(lb_fktliste->currentItem());
 			item->setText(0, function->fstr );
 		}
 		item->setOn(function->f_mode);
@@ -278,18 +278,18 @@ void FktDlg::getPlots()
 	lb_fktliste->clear();
 
   // adding all yet added functions
-	for( QValueVector<Ufkt>::iterator it = m_view->parser()->ufkt.begin(); it != m_view->parser()->ufkt.end(); ++it)
+	for( TQValueVector<Ufkt>::iterator it = m_view->parser()->ufkt.begin(); it != m_view->parser()->ufkt.end(); ++it)
 	{
 		if( it->fname.isEmpty() || it->fstr[0] == 'y' ) continue;
-		QCheckListItem *item;
+		TQCheckListItem *item;
 		if( it->fstr[0] == 'x' )
 		{
-			QString y = it->fstr;
+			TQString y = it->fstr;
 			++it;
-			item = new QCheckListItem( lb_fktliste,  y + ";" + it->fstr, QCheckListItem::CheckBox );
+			item = new TQCheckListItem( lb_fktliste,  y + ";" + it->fstr, TQCheckListItem::CheckBox );
 		}
 		else
-			item = new QCheckListItem(lb_fktliste, it->fstr, QCheckListItem::CheckBox);
+			item = new TQCheckListItem(lb_fktliste, it->fstr, TQCheckListItem::CheckBox);
 		item->setOn(it->f_mode);
 	}
 	lb_fktliste->sort();
@@ -305,7 +305,7 @@ bool FktDlg::isChanged()
 	return changed;
 }
 
-void FktDlg::showEvent ( QShowEvent * )
+void FktDlg::showEvent ( TQShowEvent * )
 {
 	changed = false;
 }
@@ -317,8 +317,8 @@ void FktDlg::slotCopyFunction()
 		cmdCopyFunction->setEnabled(false);
 		return;
 	}
-	QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
-	QString const fstr = currentItem->text();
+	TQCheckListItem *currentItem = dynamic_cast<TQCheckListItem *>(lb_fktliste->currentItem());
+	TQString const fstr = currentItem->text();
 	m_view->parser()->sendFunction(getId(fstr));
 }
 
@@ -329,8 +329,8 @@ void FktDlg::slotMoveFunction()
 		cmdCopyFunction->setEnabled(false);
 		return;
 	}
-	QCheckListItem *currentItem = dynamic_cast<QCheckListItem *>(lb_fktliste->currentItem());
-	QString const fstr = currentItem->text();
+	TQCheckListItem *currentItem = dynamic_cast<TQCheckListItem *>(lb_fktliste->currentItem());
+	TQString const fstr = currentItem->text();
 	if ( !m_view->parser()->sendFunction(getId( currentItem->text()) ) )
 		return;
 	slotDelete();
diff --git a/kmplot/kmplot/FktDlg.h b/kmplot/kmplot/FktDlg.h
index 84908316..8275b03f 100644
--- a/kmplot/kmplot/FktDlg.h
+++ b/kmplot/kmplot/FktDlg.h
@@ -52,7 +52,7 @@ public:
 	 * @param parent Parent widget.
 	 * @param view points to the current view instance.
 	 */
-	FktDlg( QWidget* parent, View* view );
+	FktDlg( TQWidget* parent, View* view );
 	/// Empty destructor.
 	virtual ~FktDlg();
 	/// Fill the widgets with plots contained in the parser instance.
@@ -72,9 +72,9 @@ protected slots:
 	void slotEdit();
 	/// Enables/disables actions if the list has a/no selection.
 	void slotHasSelection();
-	void lb_fktliste_doubleClicked(QListViewItem *, const QPoint &, int);
-	void lb_fktliste_clicked(QListViewItem * item);
-	void lb_fktliste_spacePressed(QListViewItem * item);
+	void lb_fktliste_doubleClicked(TQListViewItem *, const TQPoint &, int);
+	void lb_fktliste_clicked(TQListViewItem * item);
+	void lb_fktliste_spacePressed(TQListViewItem * item);
 	
 	/// Edit a function plot.
 	/// @param id Id of the function plot to edit
@@ -100,13 +100,13 @@ protected slots:
 	
 private:
 	/// Looks up the id of \a f_str in the parser instance.
-	int getId( const QString &f_str );
+	int getId( const TQString &f_str );
 	/// Looks up the indices of the parametric pair of function.
-	int getParamId( const QString &f_str );
+	int getParamId( const TQString &f_str );
 	/// Update the view of the main window.
 	void updateView();
 	/// Called when the dialog is showed
-	void showEvent ( QShowEvent * );
+	void showEvent ( TQShowEvent * );
 	// /// Send a function to an other instance of Kmplot. Returns true if it success, otherwise false
 	// bool sendFunction();
 	
diff --git a/kmplot/kmplot/MainDlg.cpp b/kmplot/kmplot/MainDlg.cpp
index c148d3a2..e8916f93 100644
--- a/kmplot/kmplot/MainDlg.cpp
+++ b/kmplot/kmplot/MainDlg.cpp
@@ -24,8 +24,8 @@
 */
 
 // Qt includes
-#include <qslider.h>
-#include <qtooltip.h>
+#include <tqslider.h>
+#include <tqtooltip.h>
 
 // KDE includes
 #include <dcopclient.h>
@@ -63,13 +63,13 @@ class KmPlotIO;
 
 bool MainDlg::oldfileversion;
 
-MainDlg::MainDlg(QWidget *parentWidget, const char *, QObject *parent, const char *name) :  DCOPObject( "MainDlg" ), KParts::ReadOnlyPart( parent, name ), m_recentFiles( 0 ), m_modified(false), m_parent(parentWidget)
+MainDlg::MainDlg(TQWidget *parentWidget, const char *, TQObject *parent, const char *name) :  DCOPObject( "MainDlg" ), KParts::ReadOnlyPart( parent, name ), m_recentFiles( 0 ), m_modified(false), m_parent(parentWidget)
 {
 	// we need an instance
 	setInstance( KmPlotPartFactory::instance() );
 
 	kdDebug() << "parentWidget->name():" << parentWidget->name() << endl;
-	if ( QString(parentWidget->name()).startsWith("KmPlot") )
+	if ( TQString(parentWidget->name()).startsWith("KmPlot") )
 	{
 		setXMLFile("kmplot_part.rc");
 		m_readonly = false;
@@ -84,14 +84,14 @@ MainDlg::MainDlg(QWidget *parentWidget, const char *, QObject *parent, const cha
 	coordsDialog = 0;
 	m_popupmenu = new KPopupMenu(parentWidget);
 	view = new View( m_readonly, m_modified, m_popupmenu, parentWidget );
-	connect( view, SIGNAL( setStatusBarText(const QString &)), this, SLOT( setReadOnlyStatusBarText(const QString &) ) );
+	connect( view, TQT_SIGNAL( setStatusBarText(const TQString &)), this, TQT_SLOT( setReadOnlyStatusBarText(const TQString &) ) );
 	setWidget( view );
-	view->setFocusPolicy(QWidget::ClickFocus);
+	view->setFocusPolicy(TQWidget::ClickFocus);
 	minmaxdlg = new KMinMax(view, m_parent);
 	view->setMinMaxDlg(minmaxdlg);
 	m_quickEdit = new KLineEdit( parentWidget );
 	m_quickEdit->setFocus();
-	QToolTip::add( m_quickEdit, i18n( "Enter a function equation, for example: f(x)=x^2" ) );
+	TQToolTip::add( m_quickEdit, i18n( "Enter a function equation, for example: f(x)=x^2" ) );
 	setupActions();
 	loadConstants();
 	kmplotio = new KmPlotIO(view->parser());
@@ -109,8 +109,8 @@ MainDlg::MainDlg(QWidget *parentWidget, const char *, QObject *parent, const cha
 	m_settingsDialog->addPage( m_constantsSettings, i18n("Constants"), "editconstants", i18n("Constants") );
 	// User edited the configuration - update your local copies of the
 	// configuration data
-	connect( m_settingsDialog, SIGNAL( settingsChanged() ), this, SLOT(updateSettings() ) );
-    connect( view, SIGNAL( resetZoom() ), this, SLOT(resetZoom() ) );
+	connect( m_settingsDialog, TQT_SIGNAL( settingsChanged() ), this, TQT_SLOT(updateSettings() ) );
+    connect( view, TQT_SIGNAL( resetZoom() ), this, TQT_SLOT(resetZoom() ) );
 }
 
 MainDlg::~MainDlg()
@@ -123,29 +123,29 @@ MainDlg::~MainDlg()
 void MainDlg::setupActions()
 {
 	// standard actions
-	m_recentFiles = KStdAction::openRecent( this, SLOT( slotOpenRecent( const KURL& ) ), actionCollection(),"file_openrecent");
-	KStdAction::print( this, SLOT( slotPrint() ), actionCollection(),"file_print" );
-	KStdAction::save( this, SLOT( slotSave() ), actionCollection() );
-	KStdAction::saveAs( this, SLOT( slotSaveas() ), actionCollection() );
-	connect( kapp, SIGNAL( lastWindowClosed() ), kapp, SLOT( quit() ) );
+	m_recentFiles = KStdAction::openRecent( this, TQT_SLOT( slotOpenRecent( const KURL& ) ), actionCollection(),"file_openrecent");
+	KStdAction::print( this, TQT_SLOT( slotPrint() ), actionCollection(),"file_print" );
+	KStdAction::save( this, TQT_SLOT( slotSave() ), actionCollection() );
+	KStdAction::saveAs( this, TQT_SLOT( slotSaveas() ), actionCollection() );
+	connect( kapp, TQT_SIGNAL( lastWindowClosed() ), kapp, TQT_SLOT( quit() ) );
 
-	KAction *prefs  = KStdAction::preferences( this, SLOT( slotSettings() ), actionCollection());
+	KAction *prefs  = KStdAction::preferences( this, TQT_SLOT( slotSettings() ), actionCollection());
 	prefs->setText( i18n( "Configure KmPlot..." ) );
-	KStdAction::keyBindings(this, SLOT(optionsConfigureKeys()), actionCollection());
-	KStdAction::configureToolbars(this, SLOT(optionsConfigureToolbars()), actionCollection());
+	KStdAction::keyBindings(this, TQT_SLOT(optionsConfigureKeys()), actionCollection());
+	KStdAction::configureToolbars(this, TQT_SLOT(optionsConfigureToolbars()), actionCollection());
 
 
 	// KmPlot specific actions
 	// file menu
-	( void ) new KAction( i18n( "E&xport..." ), 0, this, SLOT( slotExport() ), actionCollection(), "export");
+	( void ) new KAction( i18n( "E&xport..." ), 0, this, TQT_SLOT( slotExport() ), actionCollection(), "export");
 
 	//zoom menu
-	m_mnuNoZoom = new KRadioAction(i18n("&No Zoom") ,"CTRL+0",view, SLOT( mnuNoZoom_clicked() ),actionCollection(),"no_zoom" );
-	KRadioAction * mnuRectangular = new KRadioAction(i18n("Zoom &Rectangular"), "viewmagfit", "CTRL+1",view, SLOT( mnuRectangular_clicked() ),actionCollection(),"zoom_rectangular" );
-	KRadioAction * mnuZoomIn = new KRadioAction(i18n("Zoom &In"), "viewmag+", "CTRL+2",view, SLOT( mnuZoomIn_clicked() ),actionCollection(),"zoom_in" );
-	KRadioAction * mnuZoomOut = new KRadioAction(i18n("Zoom &Out"), "viewmag-", "CTRL+3",view, SLOT( mnuZoomOut_clicked() ),actionCollection(),"zoom_out" );
-	KRadioAction * mnuZoomCenter = new KRadioAction(i18n("&Center Point") ,"CTRL+4",view, SLOT( mnuCenter_clicked() ),actionCollection(),"zoom_center" );
-	(void ) new KAction(i18n("&Fit Widget to Trigonometric Functions") ,0,view, SLOT( mnuTrig_clicked() ),actionCollection(),"zoom_trig" );
+	m_mnuNoZoom = new KRadioAction(i18n("&No Zoom") ,"CTRL+0",view, TQT_SLOT( mnuNoZoom_clicked() ),actionCollection(),"no_zoom" );
+	KRadioAction * mnuRectangular = new KRadioAction(i18n("Zoom &Rectangular"), "viewmagfit", "CTRL+1",view, TQT_SLOT( mnuRectangular_clicked() ),actionCollection(),"zoom_rectangular" );
+	KRadioAction * mnuZoomIn = new KRadioAction(i18n("Zoom &In"), "viewmag+", "CTRL+2",view, TQT_SLOT( mnuZoomIn_clicked() ),actionCollection(),"zoom_in" );
+	KRadioAction * mnuZoomOut = new KRadioAction(i18n("Zoom &Out"), "viewmag-", "CTRL+3",view, TQT_SLOT( mnuZoomOut_clicked() ),actionCollection(),"zoom_out" );
+	KRadioAction * mnuZoomCenter = new KRadioAction(i18n("&Center Point") ,"CTRL+4",view, TQT_SLOT( mnuCenter_clicked() ),actionCollection(),"zoom_center" );
+	(void ) new KAction(i18n("&Fit Widget to Trigonometric Functions") ,0,view, TQT_SLOT( mnuTrig_clicked() ),actionCollection(),"zoom_trig" );
 	m_mnuNoZoom->setExclusiveGroup("zoom_modes");
     m_mnuNoZoom->setChecked(true);
 	mnuRectangular->setExclusiveGroup("zoom_modes");
@@ -154,52 +154,52 @@ void MainDlg::setupActions()
 	mnuZoomCenter->setExclusiveGroup("zoom_modes");
 
 	// help menu
-	( void ) new KAction( i18n( "Predefined &Math Functions" ), "functionhelp", 0, this, SLOT( slotNames() ), actionCollection(), "names" );
+	( void ) new KAction( i18n( "Predefined &Math Functions" ), "functionhelp", 0, this, TQT_SLOT( slotNames() ), actionCollection(), "names" );
 
 	// edit menu
-	( void ) new KAction( i18n( "&Colors..." ), "colorize.png", 0, this, SLOT( editColors() ), actionCollection(), "editcolors" );
-	( void ) new KAction( i18n( "&Coordinate System..." ), "coords.png", 0, this, SLOT( editAxes() ), actionCollection(), "editaxes" );
-	//  ( void ) new KAction( i18n( "&Grid..." ), "coords.png", 0, this, SLOT( editGrid() ), actionCollection(), "editgrid" );
-	( void ) new KAction( i18n( "&Scaling..." ), "scaling", 0, this, SLOT( editScaling() ), actionCollection(), "editscaling" );
-	( void ) new KAction( i18n( "&Fonts..." ), "fonts", 0, this, SLOT( editFonts() ), actionCollection(), "editfonts" );
+	( void ) new KAction( i18n( "&Colors..." ), "colorize.png", 0, this, TQT_SLOT( editColors() ), actionCollection(), "editcolors" );
+	( void ) new KAction( i18n( "&Coordinate System..." ), "coords.png", 0, this, TQT_SLOT( editAxes() ), actionCollection(), "editaxes" );
+	//  ( void ) new KAction( i18n( "&Grid..." ), "coords.png", 0, this, TQT_SLOT( editGrid() ), actionCollection(), "editgrid" );
+	( void ) new KAction( i18n( "&Scaling..." ), "scaling", 0, this, TQT_SLOT( editScaling() ), actionCollection(), "editscaling" );
+	( void ) new KAction( i18n( "&Fonts..." ), "fonts", 0, this, TQT_SLOT( editFonts() ), actionCollection(), "editfonts" );
 
-	( void ) new KAction( i18n( "Coordinate System I" ), "ksys1.png", 0, this, SLOT( slotCoord1() ), actionCollection(), "coord_i" );
-	( void ) new KAction( i18n( "Coordinate System II" ), "ksys2.png", 0, this, SLOT( slotCoord2() ), actionCollection(), "coord_ii" );
-	( void ) new KAction( i18n( "Coordinate System III" ), "ksys3.png", 0, this, SLOT( slotCoord3() ), actionCollection(), "coord_iii" );
+	( void ) new KAction( i18n( "Coordinate System I" ), "ksys1.png", 0, this, TQT_SLOT( slotCoord1() ), actionCollection(), "coord_i" );
+	( void ) new KAction( i18n( "Coordinate System II" ), "ksys2.png", 0, this, TQT_SLOT( slotCoord2() ), actionCollection(), "coord_ii" );
+	( void ) new KAction( i18n( "Coordinate System III" ), "ksys3.png", 0, this, TQT_SLOT( slotCoord3() ), actionCollection(), "coord_iii" );
 
 	// plot menu
-	( void ) new KAction( i18n( "&New Function Plot..." ), "newfunction", 0, this, SLOT( newFunction() ), actionCollection(), "newfunction" );
-	( void ) new KAction( i18n( "New Parametric Plot..." ), "newparametric", 0, this, SLOT( newParametric() ), actionCollection(), "newparametric" );
-	( void ) new KAction( i18n( "New Polar Plot..." ), "newpolar", 0, this, SLOT( newPolar() ), actionCollection(), "newpolar" );
-	( void ) new KAction( i18n( "Edit Plots..." ), "editplots", 0, this, SLOT( slotEditPlots() ), actionCollection(), "editplots" );
+	( void ) new KAction( i18n( "&New Function Plot..." ), "newfunction", 0, this, TQT_SLOT( newFunction() ), actionCollection(), "newfunction" );
+	( void ) new KAction( i18n( "New Parametric Plot..." ), "newparametric", 0, this, TQT_SLOT( newParametric() ), actionCollection(), "newparametric" );
+	( void ) new KAction( i18n( "New Polar Plot..." ), "newpolar", 0, this, TQT_SLOT( newPolar() ), actionCollection(), "newpolar" );
+	( void ) new KAction( i18n( "Edit Plots..." ), "editplots", 0, this, TQT_SLOT( slotEditPlots() ), actionCollection(), "editplots" );
 
 		// tools menu
-	KAction *mnuYValue =  new KAction( i18n( "&Get y-Value..." ), 0, this, SLOT( getYValue() ), actionCollection(), "yvalue" );
-	KAction *mnuMinValue = new KAction( i18n( "&Search for Minimum Value..." ), "minimum", 0, this, SLOT( findMinimumValue() ), actionCollection(), "minimumvalue" );
-	KAction *mnuMaxValue = new KAction( i18n( "&Search for Maximum Value..." ), "maximum", 0, this, SLOT( findMaximumValue() ), actionCollection(), "maximumvalue" );
-	KAction *mnuArea = new KAction( i18n( "&Calculate Integral" ), 0, this, SLOT( graphArea() ), actionCollection(), "grapharea" );
+	KAction *mnuYValue =  new KAction( i18n( "&Get y-Value..." ), 0, this, TQT_SLOT( getYValue() ), actionCollection(), "yvalue" );
+	KAction *mnuMinValue = new KAction( i18n( "&Search for Minimum Value..." ), "minimum", 0, this, TQT_SLOT( findMinimumValue() ), actionCollection(), "minimumvalue" );
+	KAction *mnuMaxValue = new KAction( i18n( "&Search for Maximum Value..." ), "maximum", 0, this, TQT_SLOT( findMaximumValue() ), actionCollection(), "maximumvalue" );
+	KAction *mnuArea = new KAction( i18n( "&Calculate Integral" ), 0, this, TQT_SLOT( graphArea() ), actionCollection(), "grapharea" );
 
-	connect( m_quickEdit, SIGNAL( returnPressed( const QString& ) ), this, SLOT( slotQuickEdit( const QString& ) ) );
+	connect( m_quickEdit, TQT_SIGNAL( returnPressed( const TQString& ) ), this, TQT_SLOT( slotQuickEdit( const TQString& ) ) );
 	KWidgetAction* quickEditAction =  new KWidgetAction( m_quickEdit, i18n( "Quick Edit" ), 0, this, 0, actionCollection(), "quickedit" );
 	quickEditAction->setWhatsThis( i18n( "Enter a simple function equation here.\n"
 	                                     "For instance: f(x)=x^2\nFor more options use Functions->Edit Plots... menu." ) );
 
-	view->mnuSliders[0] = new KToggleAction( i18n( "Show Slider 1" ), 0, this, SLOT( toggleShowSlider0() ), actionCollection(), QString( "options_configure_show_slider_0" ).latin1() );
-	view->mnuSliders[1] = new KToggleAction( i18n( "Show Slider 2" ), 0, this, SLOT( toggleShowSlider1() ), actionCollection(), QString( "options_configure_show_slider_1" ).latin1() );
-	view->mnuSliders[2] = new KToggleAction( i18n( "Show Slider 3" ), 0, this, SLOT( toggleShowSlider2() ), actionCollection(), QString( "options_configure_show_slider_2" ).latin1() );
-	view->mnuSliders[3] = new KToggleAction( i18n( "Show Slider 4" ), 0, this, SLOT( toggleShowSlider3() ), actionCollection(), QString( "options_configure_show_slider_3" ).latin1() );
+	view->mnuSliders[0] = new KToggleAction( i18n( "Show Slider 1" ), 0, this, TQT_SLOT( toggleShowSlider0() ), actionCollection(), TQString( "options_configure_show_slider_0" ).latin1() );
+	view->mnuSliders[1] = new KToggleAction( i18n( "Show Slider 2" ), 0, this, TQT_SLOT( toggleShowSlider1() ), actionCollection(), TQString( "options_configure_show_slider_1" ).latin1() );
+	view->mnuSliders[2] = new KToggleAction( i18n( "Show Slider 3" ), 0, this, TQT_SLOT( toggleShowSlider2() ), actionCollection(), TQString( "options_configure_show_slider_2" ).latin1() );
+	view->mnuSliders[3] = new KToggleAction( i18n( "Show Slider 4" ), 0, this, TQT_SLOT( toggleShowSlider3() ), actionCollection(), TQString( "options_configure_show_slider_3" ).latin1() );
 
 	// Popup menu
-	KAction *mnuHide = new KAction(i18n("&Hide") ,0,view, SLOT( mnuHide_clicked() ),actionCollection(),"mnuhide" );
+	KAction *mnuHide = new KAction(i18n("&Hide") ,0,view, TQT_SLOT( mnuHide_clicked() ),actionCollection(),"mnuhide" );
 	mnuHide->plug(m_popupmenu);
-	KAction *mnuRemove = new KAction(i18n("&Remove"),"editdelete", 0,view, SLOT( mnuRemove_clicked() ),actionCollection(),"mnuremove"  );
+	KAction *mnuRemove = new KAction(i18n("&Remove"),"editdelete", 0,view, TQT_SLOT( mnuRemove_clicked() ),actionCollection(),"mnuremove"  );
 	mnuRemove->plug(m_popupmenu);
-	KAction *mnuEdit = new KAction(i18n("&Edit"),"editplots", 0,view, SLOT( mnuEdit_clicked() ),actionCollection(),"mnuedit"  );
+	KAction *mnuEdit = new KAction(i18n("&Edit"),"editplots", 0,view, TQT_SLOT( mnuEdit_clicked() ),actionCollection(),"mnuedit"  );
 	mnuEdit->plug(m_popupmenu);
 	m_popupmenu->insertSeparator();
-	KAction *mnuCopy = new KAction(i18n("&Copy"), 0,view, SLOT( mnuCopy_clicked() ),actionCollection(),"mnucopy"  );
+	KAction *mnuCopy = new KAction(i18n("&Copy"), 0,view, TQT_SLOT( mnuCopy_clicked() ),actionCollection(),"mnucopy"  );
 	mnuCopy->plug(m_popupmenu);
-	KAction *mnuMove = new KAction(i18n("&Move"), 0,view, SLOT( mnuMove_clicked() ),actionCollection(),"mnumove"  );
+	KAction *mnuMove = new KAction(i18n("&Move"), 0,view, TQT_SLOT( mnuMove_clicked() ),actionCollection(),"mnumove"  );
 	mnuMove->plug(m_popupmenu);
 	m_popupmenu->insertSeparator();
 	mnuYValue->plug(m_popupmenu);
@@ -212,7 +212,7 @@ bool MainDlg::checkModified()
 	if( m_modified )
 	{
 		int saveit = KMessageBox::warningYesNoCancel( m_parent, i18n( "The plot has been modified.\n"
-		             "Do you want to save it?" ), QString::null, KStdGuiItem::save(), KStdGuiItem::discard() );
+		             "Do you want to save it?" ), TQString::null, KStdGuiItem::save(), KStdGuiItem::discard() );
 		switch( saveit )
 		{
 			case KMessageBox::Yes:
@@ -249,7 +249,7 @@ void MainDlg::slotSave()
 
 		if ( oldfileversion)
 		{
-			if ( KMessageBox::warningContinueCancel( m_parent, i18n( "This file is saved with an old file format; if you save it, you cannot open the file with older versions of Kmplot. Are you sure you want to continue?" ), QString::null, i18n("Save New Format") ) == KMessageBox::Cancel)
+			if ( KMessageBox::warningContinueCancel( m_parent, i18n( "This file is saved with an old file format; if you save it, you cannot open the file with older versions of Kmplot. Are you sure you want to continue?" ), TQString::null, i18n("Save New Format") ) == KMessageBox::Cancel)
 				return;
 		}
 		kmplotio->save( m_url.url() );
@@ -263,7 +263,7 @@ void MainDlg::slotSaveas()
 {
 	if (m_readonly)
 		return;
-	const KURL url = KFileDialog::getSaveURL( QDir::currentDirPath(), i18n( "*.fkt|KmPlot Files (*.fkt)\n*|All Files" ), m_parent, i18n( "Save As" ) );
+	const KURL url = KFileDialog::getSaveURL( TQDir::currentDirPath(), i18n( "*.fkt|KmPlot Files (*.fkt)\n*|All Files" ), m_parent, i18n( "Save As" ) );
 
 	if ( !url.isEmpty() )
 	{
@@ -286,7 +286,7 @@ void MainDlg::slotSaveas()
 
 void MainDlg::slotExport()
 {
-	KURL const url = KFileDialog::getSaveURL(QDir::currentDirPath(),
+	KURL const url = KFileDialog::getSaveURL(TQDir::currentDirPath(),
 	                 i18n("*.svg|Scalable Vector Graphics (*.svg)\n"
 	                      "*.bmp|Bitmap 180dpi (*.bmp)\n"
 	                      "*.png|Bitmap 180dpi (*.png)"), m_parent, i18n("Export") );
@@ -297,7 +297,7 @@ void MainDlg::slotExport()
 
 		if( url.fileName().right(4).lower()==".svg")
 		{
-			QPicture pic;
+			TQPicture pic;
 			view->draw(&pic, 2);
 			if (url.isLocalFile() )
 				pic.save( url.prettyURL(0,KURL::StripFileProtocol), "SVG");
@@ -313,7 +313,7 @@ void MainDlg::slotExport()
 
 		else if( url.fileName().right(4).lower()==".bmp")
 		{
-			QPixmap pic(100, 100);
+			TQPixmap pic(100, 100);
 			view->draw(&pic, 3);
 			if (url.isLocalFile() )
 				pic.save(  url.prettyURL(0,KURL::StripFileProtocol), "BMP");
@@ -329,7 +329,7 @@ void MainDlg::slotExport()
 
 		else if( url.fileName().right(4).lower()==".png")
 		{
-			QPixmap pic(100, 100);
+			TQPixmap pic(100, 100);
 			view->draw(&pic, 3);
 			if (url.isLocalFile() )
 				pic.save( url.prettyURL(0,KURL::StripFileProtocol), "PNG");
@@ -366,8 +366,8 @@ void MainDlg::slotOpenRecent( const KURL &url )
 {
 	if( isModified() || !m_url.isEmpty() ) // open the file in a new window
 	{
-		QByteArray data;
-		QDataStream stream(data, IO_WriteOnly);
+		TQByteArray data;
+		TQDataStream stream(data, IO_WriteOnly);
 		stream << url;
 		KApplication::kApplication()->dcopClient()->send(KApplication::kApplication()->dcopClient()->appId(), "KmPlotShell","openFileInNewWindow(KURL)", data);
 		return;
@@ -389,7 +389,7 @@ void MainDlg::slotOpenRecent( const KURL &url )
 
 void MainDlg::slotPrint()
 {
-	KPrinter prt( QPrinter::PrinterResolution );
+	KPrinter prt( TQPrinter::PrinterResolution );
 	prt.setResolution( 72 );
 	prt.addDialogPage( new KPrinterDlg( m_parent, "KmPlot page" ) );
 	if ( prt.setup( m_parent, i18n( "Print Plot" ) ) )
@@ -408,7 +408,7 @@ void MainDlg::editColors()
 
 	// User edited the configuration - update your local copies of the
 	// configuration data
-	connect( colorsDialog, SIGNAL( settingsChanged() ), this, SLOT(updateSettings() ) );
+	connect( colorsDialog, TQT_SIGNAL( settingsChanged() ), this, TQT_SLOT(updateSettings() ) );
 	colorsDialog->show();
 }
 
@@ -420,7 +420,7 @@ void MainDlg::editAxes()
 		coordsDialog = new CoordsConfigDialog( view->parser(), m_parent);
 		// User edited the configuration - update your local copies of the
 		// configuration data
-		connect( coordsDialog, SIGNAL( settingsChanged() ), this, SLOT(updateSettings() ) );
+		connect( coordsDialog, TQT_SIGNAL( settingsChanged() ), this, TQT_SLOT(updateSettings() ) );
 	}
 	coordsDialog->show();
 }
@@ -433,7 +433,7 @@ void MainDlg::editScaling()
 	scalingDialog->addPage( new SettingsPageScaling( 0, "scalingSettings" ), i18n( "Scale" ), "scaling", i18n( "Edit Scaling" ) );
 	// User edited the configuration - update your local copies of the
 	// configuration data
-	connect( scalingDialog, SIGNAL( settingsChanged() ), this, SLOT(updateSettings() ) );
+	connect( scalingDialog, TQT_SIGNAL( settingsChanged() ), this, TQT_SLOT(updateSettings() ) );
 	scalingDialog->show();
 }
 
@@ -445,7 +445,7 @@ void MainDlg::editFonts()
 	fontsDialog->addPage( new SettingsPageFonts( 0, "fontsSettings" ), i18n( "Fonts" ), "fonts", i18n( "Edit Fonts" ) );
 	// User edited the configuration - update your local copies of the
 	// configuration data
-	connect( fontsDialog, SIGNAL( settingsChanged() ), this, SLOT(updateSettings() ) );
+	connect( fontsDialog, TQT_SIGNAL( settingsChanged() ), this, TQT_SLOT(updateSettings() ) );
 	fontsDialog->show();
 }
 
@@ -465,7 +465,7 @@ void MainDlg::newFunction()
 	EditFunction* editFunction = new EditFunction( view->parser(), m_parent );
 	editFunction->setCaption(i18n( "New Function Plot" ) );
 	editFunction->initDialog();
-	if ( editFunction->exec() == QDialog::Accepted )
+	if ( editFunction->exec() == TQDialog::Accepted )
 	{
 		m_modified = true;
 		view->updateSliders();
@@ -478,7 +478,7 @@ void MainDlg::newParametric()
 	KEditParametric* editParametric = new KEditParametric( view->parser(), m_parent );
 	editParametric->setCaption(i18n( "New Parametric Plot"));
 	editParametric->initDialog();
-	if ( editParametric->exec() == QDialog::Accepted )
+	if ( editParametric->exec() == TQDialog::Accepted )
 	{
 		m_modified = true;
 		view->drawPlot();
@@ -491,7 +491,7 @@ void MainDlg::newPolar()
 	KEditPolar* editPolar = new KEditPolar( view->parser(), m_parent );
 	editPolar->setCaption(i18n( "New Polar Plot"));
 	editPolar->initDialog();
-	if (  editPolar->exec() == QDialog::Accepted )
+	if (  editPolar->exec() == TQDialog::Accepted )
 	{
 		m_modified = true;
 		view->drawPlot();
@@ -505,7 +505,7 @@ void MainDlg::slotEditPlots()
 	fdlg->getPlots();
 	KTempFile tmpfile;
 	kmplotio->save( tmpfile.name() );
-	if( fdlg->exec() == QDialog::Rejected )
+	if( fdlg->exec() == TQDialog::Rejected )
 	{
 		if ( fdlg->isChanged() )
 		{
@@ -522,10 +522,10 @@ void MainDlg::slotEditPlots()
 	tmpfile.unlink();
 }
 
-void MainDlg::slotQuickEdit(const QString& f_str_const )
+void MainDlg::slotQuickEdit(const TQString& f_str_const )
 {
 	//creates a valid name for the function if the user has forgotten that
-  	QString f_str( f_str_const );
+  	TQString f_str( f_str_const );
 	int const pos = f_str_const.find(';');
 	if (pos!=-1)
 	  f_str = f_str.left(pos);
@@ -557,7 +557,7 @@ void MainDlg::slotQuickEdit(const QString& f_str_const )
 	Ufkt *ufkt = &view->parser()->ufkt.last();
 	view->parser()->prepareAddingFunction(ufkt);
 
-	if ( pos!=-1 && !view->parser()->getext(ufkt, QString(f_str_const)))
+	if ( pos!=-1 && !view->parser()->getext(ufkt, TQString(f_str_const)))
 	{
 		m_quickEdit->setFocus();
 		m_quickEdit->selectAll();
@@ -613,9 +613,9 @@ void MainDlg::loadConstants()
 {
 	KSimpleConfig conf ("kcalcrc");
 	conf.setGroup("UserConstants");
-	QString tmp;
-	QString tmp_constant;
-	QString tmp_value;
+	TQString tmp;
+	TQString tmp_constant;
+	TQString tmp_value;
 	char constant;
 	double value;
 	for( int i=0; ;i++)
@@ -644,7 +644,7 @@ void MainDlg::loadConstants()
 			while (!copy_found)
 			{
 				// go through the constant list
-				QValueVector<Constant>::iterator it =  view->parser()->constant.begin();
+				TQValueVector<Constant>::iterator it =  view->parser()->constant.begin();
 				while (it!= view->parser()->constant.end() && !copy_found)
 				{
 					if (constant == it->constant )
@@ -677,11 +677,11 @@ void MainDlg::saveConstants()
 	KSimpleConfig conf ("kcalcrc");
 	conf.deleteGroup("Constants");
 	conf.setGroup("UserConstants");
-	QString tmp;
+	TQString tmp;
 	for( int i = 0; i< (int)view->parser()->constant.size();i++)
 	{
 		tmp.setNum(i);
-		conf.writeEntry("nameConstant"+tmp, QString( QChar(view->parser()->constant[i].constant) ) ) ;
+		conf.writeEntry("nameConstant"+tmp, TQString( TQChar(view->parser()->constant[i].constant) ) ) ;
 		conf.writeEntry("valueConstant"+tmp, view->parser()->constant[i].value);
 	}
 }
@@ -736,8 +736,8 @@ void MainDlg::toggleShowSlider(int const num)
 	if ( view->sliders[ num ] == 0 )
 	{
 		view->sliders[ num ] = new KSliderWindow( view, num);
-		connect( view->sliders[num]->slider, SIGNAL( valueChanged( int ) ), view, SLOT( drawPlot() ) );
-		connect( view->sliders[num], SIGNAL( windowClosed( int ) ), view, SLOT( sliderWindowClosed(int) ) );
+		connect( view->sliders[num]->slider, TQT_SIGNAL( valueChanged( int ) ), view, TQT_SLOT( drawPlot() ) );
+		connect( view->sliders[num], TQT_SIGNAL( windowClosed( int ) ), view, TQT_SLOT( sliderWindowClosed(int) ) );
 	}
 	if ( !view->sliders[ num ]->isShown() )
 		view->sliders[ num ]->show();
@@ -745,19 +745,19 @@ void MainDlg::toggleShowSlider(int const num)
 		view->sliders[ num ]->hide();
 }
 
-void MainDlg::setReadOnlyStatusBarText(const QString &text)
+void MainDlg::setReadOnlyStatusBarText(const TQString &text)
 {
 	setStatusBarText(text);
 }
 
 void MainDlg::optionsConfigureKeys()
 {
-	KApplication::kApplication()->dcopClient()->send(KApplication::kApplication()->dcopClient()->appId(), "KmPlotShell","optionsConfigureKeys()", QByteArray());
+	KApplication::kApplication()->dcopClient()->send(KApplication::kApplication()->dcopClient()->appId(), "KmPlotShell","optionsConfigureKeys()", TQByteArray());
 }
 
 void MainDlg::optionsConfigureToolbars()
 {
-	KApplication::kApplication()->dcopClient()->send(KApplication::kApplication()->dcopClient()->appId(), "KmPlotShell","optionsConfigureToolbars()", QByteArray());
+	KApplication::kApplication()->dcopClient()->send(KApplication::kApplication()->dcopClient()->appId(), "KmPlotShell","optionsConfigureToolbars()", TQByteArray());
 }
 
 void MainDlg::resetZoom()
@@ -785,9 +785,9 @@ KmPlotPartFactory::~KmPlotPartFactory()
 	s_instance = 0L;
 }
 
-KParts::Part* KmPlotPartFactory::createPartObject( QWidget *parentWidget, const char *widgetName,
-        QObject *parent, const char *name,
-        const char *, const QStringList & )
+KParts::Part* KmPlotPartFactory::createPartObject( TQWidget *parentWidget, const char *widgetName,
+        TQObject *parent, const char *name,
+        const char *, const TQStringList & )
 {
 	// Create an instance of our Part
 	MainDlg* obj = new MainDlg( parentWidget, widgetName, parent, name );
diff --git a/kmplot/kmplot/MainDlg.h b/kmplot/kmplot/MainDlg.h
index dd3a9916..7b4d83bf 100644
--- a/kmplot/kmplot/MainDlg.h
+++ b/kmplot/kmplot/MainDlg.h
@@ -29,7 +29,7 @@
 #define MainDlg_included
 
 // Qt includes
-#include <qpicture.h>
+#include <tqpicture.h>
 
 // KDE includes
 #include <kaction.h>
@@ -77,7 +77,7 @@ public:
 	 * @param parent parent object
 	 * @param name name of this dialog
 	 */
-	MainDlg(QWidget *parentWidget, const char *, QObject *parent, const char *name);
+	MainDlg(TQWidget *parentWidget, const char *, TQObject *parent, const char *name);
 	/// Cleaning up a bit.
 	virtual ~MainDlg();
 	/// This class needs access to private members, too.
@@ -185,7 +185,7 @@ private:
 	/// Set to true if the application is readonly
 	bool m_readonly;
 	/// MainDlg's parent widget
-	QWidget *m_parent;
+	TQWidget *m_parent;
 	/// Current file
 	KURL m_currentfile;
 	/// The axes config dialogs
@@ -204,9 +204,9 @@ protected slots:
 	* Manages the LineEdit content after returnPressed() is emitted.
 	 * @param f_str_const the content of the KLineEdit
 	*/
-	void slotQuickEdit( const QString& f_str_const );
+	void slotQuickEdit( const TQString& f_str_const );
 
-	void setReadOnlyStatusBarText(const QString &);
+	void setReadOnlyStatusBarText(const TQString &);
 
 	/// slots for the settings-menu
 	void optionsConfigureKeys();
@@ -219,9 +219,9 @@ class KmPlotPartFactory : public KParts::Factory
 public:
 	KmPlotPartFactory();
 	virtual ~KmPlotPartFactory();
-	virtual KParts::Part* createPartObject( QWidget *parentWidget, const char *widgetName,
-	                                        QObject *parent, const char *name,
-	                                        const char *classname, const QStringList &args );
+	virtual KParts::Part* createPartObject( TQWidget *parentWidget, const char *widgetName,
+	                                        TQObject *parent, const char *name,
+	                                        const char *classname, const TQStringList &args );
 	static KInstance* instance();
 
 private:
diff --git a/kmplot/kmplot/View.cpp b/kmplot/kmplot/View.cpp
index 2df9647d..0d45fd2c 100644
--- a/kmplot/kmplot/View.cpp
+++ b/kmplot/kmplot/View.cpp
@@ -24,13 +24,13 @@
 */
 
 // Qt includes
-#include <qbitmap.h>
-#include <qcursor.h>
-#include <qdatastream.h>
-#include <qpicture.h>
-#include <qslider.h>
-#include <qtooltip.h>
-#include <qwhatsthis.h>
+#include <tqbitmap.h>
+#include <tqcursor.h>
+#include <tqdatastream.h>
+#include <tqpicture.h>
+#include <tqslider.h>
+#include <tqtooltip.h>
+#include <tqwhatsthis.h>
 
 // KDE includes
 #include <kaction.h>
@@ -56,7 +56,7 @@ double View::xmin = 0;
 double View::xmax = 0;
 
 
-View::View(bool const r, bool &mo, KPopupMenu *p, QWidget* parent, const char* name ) : DCOPObject("View"), QWidget( parent, name , WStaticContents ),  buffer( width(), height() ), m_popupmenu(p), m_modified(mo), m_readonly(r), m_dcop_client(KApplication::kApplication()->dcopClient())
+View::View(bool const r, bool &mo, KPopupMenu *p, TQWidget* parent, const char* name ) : DCOPObject("View"), TQWidget( parent, name , WStaticContents ),  buffer( width(), height() ), m_popupmenu(p), m_modified(mo), m_readonly(r), m_dcop_client(KApplication::kApplication()->dcopClient())
 {
 	csmode = csparam = -1;
 	cstype = 0;
@@ -115,12 +115,12 @@ XParser* View::parser()
 	return m_parser;
 }
 
-void View::draw(QPaintDevice *dev, int form)
+void View::draw(TQPaintDevice *dev, int form)
 {
 	int lx, ly;
 	float sf;
-	QRect rc;
-	QPainter DC;    // our painter
+	TQRect rc;
+	TQPainter DC;    // our painter
 	DC.begin(dev);    // start painting widget
 	rc=DC.viewport();
 	w=rc.width();
@@ -131,23 +131,23 @@ void View::draw(QPaintDevice *dev, int form)
 
 	if(form==0)          // screen
 	{
-		ref=QPoint(120, 100);
+		ref=TQPoint(120, 100);
 		lx=(int)((xmax-xmin)*100.*drskalx/tlgx);
 		ly=(int)((ymax-ymin)*100.*drskaly/tlgy);
 		DC.scale((float)h/(float)(ly+2*ref.y()), (float)h/(float)(ly+2*ref.y()));
-		if(DC.xForm(QPoint(lx+2*ref.x(), ly)).x() > DC.viewport().right())
+		if(DC.xForm(TQPoint(lx+2*ref.x(), ly)).x() > DC.viewport().right())
 		{
 			DC.resetXForm();
 			DC.scale((float)w/(float)(lx+2*ref.x()), (float)w/(float)(lx+2*ref.x()));
 		}
 		wm=DC.worldMatrix();
-		s=DC.xForm(QPoint(1000, 0)).x()/1000.;
+		s=DC.xForm(TQPoint(1000, 0)).x()/1000.;
 		dgr.Create( ref, lx, ly, xmin, xmax, ymin, ymax );
 	}
 	else if(form==1)        // printer
 	{
 		sf=72./254.;        // 72dpi
-		ref=QPoint(100, 100);
+		ref=TQPoint(100, 100);
 		lx=(int)((xmax-xmin)*100.*drskalx/tlgx);
 		ly=(int)((ymax-ymin)*100.*drskaly/tlgy);
 		DC.scale(sf, sf);
@@ -158,12 +158,12 @@ void View::draw(QPaintDevice *dev, int form)
 		if ( ( (KPrinter* )dev )->option( "app-kmplot-printbackground" ) == "-1" )
 			DC.fillRect( dgr.GetFrame(),  backgroundcolor); //draw a colored background
 		//DC.end();
-		//((QPixmap *)dev)->fill(QColor("#FF00FF"));
+		//((TQPixmap *)dev)->fill(TQColor("#FF00FF"));
 		//DC.begin(dev);
 	}
 	else if(form==2)								// svg
 	{
-		ref=QPoint(0, 0);
+		ref=TQPoint(0, 0);
 		lx=(int)((xmax-xmin)*100.*drskalx/tlgx);
 		ly=(int)((ymax-ymin)*100.*drskaly/tlgy);
 		dgr.Create( ref, lx, ly, xmin, xmax, ymin, ymax );
@@ -173,13 +173,13 @@ void View::draw(QPaintDevice *dev, int form)
 	else if(form==3)								// bmp, png
 	{
 		sf=180./254.;								// 180dpi
-		ref=QPoint(0, 0);
+		ref=TQPoint(0, 0);
 		lx=(int)((xmax-xmin)*100.*drskalx/tlgx);
 		ly=(int)((ymax-ymin)*100.*drskaly/tlgy);
 		dgr.Create( ref, lx, ly, xmin, xmax, ymin, ymax );
 		DC.end();
-		((QPixmap *)dev)->resize((int)(dgr.GetFrame().width()*sf), (int)(dgr.GetFrame().height()*sf));
-		((QPixmap *)dev)->fill(backgroundcolor);
+		((TQPixmap *)dev)->resize((int)(dgr.GetFrame().width()*sf), (int)(dgr.GetFrame().height()*sf));
+		((TQPixmap *)dev)->fill(backgroundcolor);
 		DC.begin(dev);
 		DC.translate(-dgr.GetFrame().left()*sf, -dgr.GetFrame().top()*sf);
 		DC.scale(sf, sf);
@@ -213,7 +213,7 @@ void View::draw(QPaintDevice *dev, int form)
 	isDrawing=true;
 	setCursor(Qt::WaitCursor );
 	stop_calculating = false;
-	for(QValueVector<Ufkt>::iterator ufkt=m_parser->ufkt.begin(); ufkt!=m_parser->ufkt.end() && !stop_calculating; ++ufkt)
+	for(TQValueVector<Ufkt>::iterator ufkt=m_parser->ufkt.begin(); ufkt!=m_parser->ufkt.end() && !stop_calculating; ++ufkt)
 		if ( !ufkt->fname.isEmpty() )
 			plotfkt(ufkt, &DC);
 
@@ -224,13 +224,13 @@ void View::draw(QPaintDevice *dev, int form)
 }
 
 
-void View::plotfkt(Ufkt *ufkt, QPainter *pDC)
+void View::plotfkt(Ufkt *ufkt, TQPainter *pDC)
 {
 	char p_mode;
 	int iy, k, ke, mflg;
 	double x, y, dmin, dmax;
-	QPoint p1, p2;
-	QPen pen;
+	TQPoint p1, p2;
+	TQPen pen;
 	pen.setCapStyle(Qt::RoundCap);
 	iy=0;
 	y=0.0;
@@ -440,18 +440,18 @@ void View::plotfkt(Ufkt *ufkt, QPainter *pDC)
 			KMessageBox::error(this,i18n("The drawing was cancelled by the user."));
 }
 
-void View::drawHeaderTable(QPainter *pDC)
+void View::drawHeaderTable(TQPainter *pDC)
 {
-	QString alx, aly, atx, aty, dfx, dfy;
+	TQString alx, aly, atx, aty, dfx, dfy;
 
 	if( m_printHeaderTable )
 	{
 		pDC->translate(250., 150.);
-		pDC->setPen(QPen(black, (int)(5.*s)));
-		pDC->setFont(QFont( Settings::headerTableFont(), 30) );
+		pDC->setPen(TQPen(black, (int)(5.*s)));
+		pDC->setFont(TQFont( Settings::headerTableFont(), 30) );
 		puts( Settings::headerTableFont().latin1() );
-		QString minStr = Settings::xMin();
-		QString maxStr = Settings::xMax();
+		TQString minStr = Settings::xMin();
+		TQString maxStr = Settings::xMax();
 		getMinMax( Settings::xRange(), minStr, maxStr);
 		alx="[ "+minStr+" | "+maxStr+" ]";
 		minStr = Settings::yMin();
@@ -492,7 +492,7 @@ void View::drawHeaderTable(QPainter *pDC)
 		pDC->Lineh(0, 320, 700);
 		int ypos = 380;
 		//for(uint ix=0; ix<m_parser->countFunctions() && !stop_calculating; ++ix)
-		for(QValueVector<Ufkt>::iterator it=m_parser->ufkt.begin(); it!=m_parser->ufkt.end() && !stop_calculating; ++it)
+		for(TQValueVector<Ufkt>::iterator it=m_parser->ufkt.begin(); it!=m_parser->ufkt.end() && !stop_calculating; ++it)
 		{
 			pDC->drawText(100, ypos, it->fstr);
 			ypos+=60;
@@ -503,7 +503,7 @@ void View::drawHeaderTable(QPainter *pDC)
 }
 
 
-void View::getMinMax( int koord, QString &mini, QString &maxi )
+void View::getMinMax( int koord, TQString &mini, TQString &maxi )
 {
 	switch(koord)
 	{
@@ -526,10 +526,10 @@ void View::getMinMax( int koord, QString &mini, QString &maxi )
 }
 
 
-void View::setpi(QString *s)
+void View::setpi(TQString *s)
 {
 	int i;
-	QChar c(960);
+	TQChar c(960);
 
 	while((i=s->find('p')) != -1) s->replace(i, 2, &c, 1);
 }
@@ -570,15 +570,15 @@ bool View::root(double *x0, Ufkt *it)
 	}
 }
 
-void View::paintEvent(QPaintEvent *)
+void View::paintEvent(TQPaintEvent *)
 {
-	QPainter p;
+	TQPainter p;
 	p.begin(this);
 	bitBlt( this, 0, 0, &buffer, 0, 0, width(), height() );
 	p.end();
 }
 
-void View::resizeEvent(QResizeEvent *)
+void View::resizeEvent(TQResizeEvent *)
 {
 	if (isDrawing) //stop drawing integrals
 	{
@@ -595,28 +595,28 @@ void View::drawPlot()
 		m_minmax->updateFunctions();
 	buffer.fill(backgroundcolor);
 	draw(&buffer, 0);
-	QPainter p;
+	TQPainter p;
 	p.begin(this);
 	bitBlt( this, 0, 0, &buffer, 0, 0, width(), height() );
 	p.end();
 }
 
-void View::mouseMoveEvent(QMouseEvent *e)
+void View::mouseMoveEvent(TQMouseEvent *e)
 {
 	if ( isDrawing)
 		return;
 	if (zoom_mode==4 &&  e->stateAfter() != Qt::NoButton)
 	{
-		QPainter p;
+		TQPainter p;
 		p.begin(this);
 		bitBlt( this, 0, 0, &buffer, 0, 0, width(), height() );
 		p.end();
 
-		QPainter painter(this);
-		QPen pen(Qt::white, 1, Qt::DotLine);
+		TQPainter painter(this);
+		TQPen pen(Qt::white, 1, Qt::DotLine);
 		painter.setRasterOp (Qt::XorROP);
 		painter.setPen(pen);
-		painter.setBackgroundMode (QPainter::OpaqueMode);
+		painter.setBackgroundMode (TQPainter::OpaqueMode);
 		painter.setBackgroundColor (Qt::blue);
 
 		painter.drawRect(rectangle_point.x(), rectangle_point.y(), e->pos().x()-rectangle_point.x(), e->pos().y()-rectangle_point.y());
@@ -641,8 +641,8 @@ void View::mouseMoveEvent(QMouseEvent *e)
 	
 	if(area.contains(e->pos()) || (e->button()==Qt::LeftButton && e->state()==Qt::LeftButton && csxpos>xmin && csxpos<xmax))
 	{
-		QPoint ptd, ptl;
-		QPainter DC;
+		TQPoint ptd, ptl;
+		TQPainter DC;
 		bool out_of_bounds = false;
 
 		DC.begin(this);
@@ -677,9 +677,9 @@ void View::mouseMoveEvent(QMouseEvent *e)
 					double x0;
 					if(root(&x0, it))
 					{
-						QString str="  ";
+						TQString str="  ";
 						str+=i18n("root");
-						setStatusBar(str+QString().sprintf(":  x0= %+.5f", x0), 3);
+						setStatusBar(str+TQString().sprintf(":  x0= %+.5f", x0), 3);
 						rootflg=true;
 					}
 				}
@@ -703,7 +703,7 @@ void View::mouseMoveEvent(QMouseEvent *e)
 		}
 		ptd=DC.xForm(ptl);
 		DC.end();
-		QString sx, sy;
+		TQString sx, sy;
 		if (out_of_bounds)
 		{
 		  sx = sy = "";
@@ -718,7 +718,7 @@ void View::mouseMoveEvent(QMouseEvent *e)
 			bitBlt(&hline, 0, 0, this, area.left(), fcy=ptd.y(), area.width(), 1);
 			bitBlt(&vline, 0, 0, this, fcx=ptd.x(), area.top(), 1, area.height());
 			// Fadenkreuz zeichnen
-			QPen pen;
+			TQPen pen;
 			if ( csmode == -1)
 				pen.setColor(inverted_backgroundcolor);
 			else
@@ -766,7 +766,7 @@ void View::mouseMoveEvent(QMouseEvent *e)
 }
 
 
-void View::mousePressEvent(QMouseEvent *e)
+void View::mousePressEvent(TQMouseEvent *e)
 {
 	if ( m_popupmenushown>0)
 		return;
@@ -785,7 +785,7 @@ void View::mousePressEvent(QMouseEvent *e)
 	}
 	else if (  zoom_mode==Z_ZoomIn ) //zoom in
 	{
-		QPainter DC;
+		TQPainter DC;
 		DC.begin(this);
 		DC.setWindow(0, 0, w, h);
 		DC.setWorldMatrix(wm);
@@ -812,7 +812,7 @@ void View::mousePressEvent(QMouseEvent *e)
 	}
 	else if (  zoom_mode==3 ) //zoom out
 	{
-		QPainter DC;
+		TQPainter DC;
 		DC.begin(this);
 		DC.setWindow(0, 0, w, h);
 		DC.setWorldMatrix(wm);
@@ -839,7 +839,7 @@ void View::mousePressEvent(QMouseEvent *e)
 	}
 	else if (  zoom_mode==5 ) //center
 	{
-		QPainter DC;
+		TQPainter DC;
 		DC.begin(this);
 		DC.setWindow(0, 0, w, h);
 		DC.setWorldMatrix(wm);
@@ -865,7 +865,7 @@ void View::mousePressEvent(QMouseEvent *e)
 	if( !m_readonly && e->button()==RightButton) //clicking with the right mouse button
 	{
 		char function_type;
-		for( QValueVector<Ufkt>::iterator it = m_parser->ufkt.begin(); it != m_parser->ufkt.end(); ++it)
+		for( TQValueVector<Ufkt>::iterator it = m_parser->ufkt.begin(); it != m_parser->ufkt.end(); ++it)
 		{
 			function_type = it->fstr[0].latin1();
 			if ( function_type=='y' || function_type=='r' || it->fname.isEmpty()) continue;
@@ -889,7 +889,7 @@ void View::mousePressEvent(QMouseEvent *e)
 
 				if ( function_type=='x' &&  fabs(csxpos-m_parser->fkt(it, csxpos))< g && it->fstr.contains('t')==1) //parametric plot
 				{
-					QValueVector<Ufkt>::iterator ufkt_y = it+1;
+					TQValueVector<Ufkt>::iterator ufkt_y = it+1;
 					if ( fabs(csypos-m_parser->fkt(ufkt_y, csxpos)<g)  && ufkt_y->fstr.contains('t')==1)
 					{
 						if ( csmode == -1)
@@ -901,13 +901,13 @@ void View::mousePressEvent(QMouseEvent *e)
 						}
 						else
 							m_popupmenushown = 2;
-						QString y_name( ufkt_y->fstr );
+						TQString y_name( ufkt_y->fstr );
 						m_popupmenu->setItemEnabled(m_popupmenu->idAt(m_popupmenu->count()-1),false);
 						m_popupmenu->setItemEnabled(m_popupmenu->idAt(m_popupmenu->count()-2),false);
 						m_popupmenu->setItemEnabled(m_popupmenu->idAt(m_popupmenu->count()-3),false);
 						m_popupmenu->setItemEnabled(m_popupmenu->idAt(m_popupmenu->count()-4),false);
 						m_popupmenu->changeTitle(10,ufkt_y->fstr+";"+y_name);
-						m_popupmenu->exec(QCursor::pos());
+						m_popupmenu->exec(TQCursor::pos());
 						m_popupmenu->setItemEnabled(m_popupmenu->idAt(m_popupmenu->count()-1),true);
 						m_popupmenu->setItemEnabled(m_popupmenu->idAt(m_popupmenu->count()-2),true);
 						m_popupmenu->setItemEnabled(m_popupmenu->idAt(m_popupmenu->count()-3),true);
@@ -927,7 +927,7 @@ void View::mousePressEvent(QMouseEvent *e)
 					else
 						m_popupmenushown = 2;
 					m_popupmenu->changeTitle(10, it->fstr);
-					m_popupmenu->exec(QCursor::pos());
+					m_popupmenu->exec(TQCursor::pos());
 					return;
 				}
 				else if(fabs(csypos-m_parser->a1fkt( it, csxpos))< g && it->f1_mode)
@@ -941,10 +941,10 @@ void View::mousePressEvent(QMouseEvent *e)
 					}
 					else
 						m_popupmenushown = 2;
-					QString function = it->fstr;
+					TQString function = it->fstr;
 					function = function.left(function.find('(')) + '\'';
 					m_popupmenu->changeTitle(10, function);
-					m_popupmenu->exec(QCursor::pos());
+					m_popupmenu->exec(TQCursor::pos());
 					return;
 				}
 				else if(fabs(csypos-m_parser->a2fkt(it, csxpos))< g && it->f2_mode)
@@ -958,10 +958,10 @@ void View::mousePressEvent(QMouseEvent *e)
 					}
 					else
 						m_popupmenushown = 2;
-					QString function = it->fstr;
+					TQString function = it->fstr;
 					function = function.left(function.find('(')) + "\'\'";
 					m_popupmenu->changeTitle(10, function);
-					m_popupmenu->exec(QCursor::pos());
+					m_popupmenu->exec(TQCursor::pos());
 					return;
 				}
 			}
@@ -978,7 +978,7 @@ void View::mousePressEvent(QMouseEvent *e)
 		mouseMoveEvent(e);
 		return ;
 	}
-	for( QValueVector<Ufkt>::iterator it = m_parser->ufkt.begin(); it != m_parser->ufkt.end(); ++it)
+	for( TQValueVector<Ufkt>::iterator it = m_parser->ufkt.begin(); it != m_parser->ufkt.end(); ++it)
 	{
 		if (it->fname.isEmpty() )
 			continue;
@@ -1018,7 +1018,7 @@ void View::mousePressEvent(QMouseEvent *e)
 				cstype=1;
 				csparam = k;
 				m_minmax->selectItem();
-				QString function = it->fstr;
+				TQString function = it->fstr;
 				function = function.left(function.find('(')) + '\'';
 				setStatusBar(function,4);
 				mouseMoveEvent(e);
@@ -1030,7 +1030,7 @@ void View::mousePressEvent(QMouseEvent *e)
 				cstype=2;
 				csparam = k;
 				m_minmax->selectItem();
-				QString function = it->fstr;
+				TQString function = it->fstr;
 				function = function.left(function.find('(')) + "\'\'";
 				setStatusBar(function,4);
 				mouseMoveEvent(e);
@@ -1044,7 +1044,7 @@ void View::mousePressEvent(QMouseEvent *e)
 }
 
 
-void View::mouseReleaseEvent ( QMouseEvent * e )
+void View::mouseReleaseEvent ( TQMouseEvent * e )
 {
 	if ( zoom_mode == Z_Center )
 	{
@@ -1055,13 +1055,13 @@ void View::mouseReleaseEvent ( QMouseEvent * e )
 			update();
 			return;
 		}
-		QPainter DC;
+		TQPainter DC;
 		DC.begin(this);
 		bitBlt( this, 0, 0, &buffer, 0, 0, width(), height() );
 		DC.setWindow(0, 0, w, h);
 		DC.setWorldMatrix(wm);
 
-		QPoint p=DC.xFormDev(e->pos());
+		TQPoint p=DC.xFormDev(e->pos());
 		double real1x = dgr.Transx(p.x() ) ;
 		double real1y = dgr.Transy(p.y() ) ;
 		p=DC.xFormDev(rectangle_point);
@@ -1109,7 +1109,7 @@ void View::mouseReleaseEvent ( QMouseEvent * e )
 	}
 }
 
-void View::coordToMinMax( const int koord, const QString &minStr, const QString &maxStr,
+void View::coordToMinMax( const int koord, const TQString &minStr, const TQString &maxStr,
                           double &min, double &max )
 {
 	switch ( koord )
@@ -1144,7 +1144,7 @@ void View::setPlotRange()
 
 void View::setScaling()
 {
-	QString units[ 9 ] = { "10", "5", "2", "1", "0.5", "pi/2", "pi/3", "pi/4",i18n("automatic") };
+	TQString units[ 9 ] = { "10", "5", "2", "1", "0.5", "pi/2", "pi/3", "pi/4",i18n("automatic") };
 
 	if( Settings::xScaling() == 8) //automatic x-scaling
     {
@@ -1187,7 +1187,7 @@ void View::getSettings()
 void View::init()
 {
 	getSettings();
-	QValueVector<Ufkt>::iterator it = m_parser->ufkt.begin();
+	TQValueVector<Ufkt>::iterator it = m_parser->ufkt.begin();
 	it->fname="";
 	while ( m_parser->ufkt.count() > 1)
 		m_parser->Parser::delfkt( &m_parser->ufkt.last() );
@@ -1200,7 +1200,7 @@ void View::stopDrawing()
 		stop_calculating = true;
 }
 
-void View::findMinMaxValue(Ufkt *ufkt, char p_mode, bool minimum, double &dmin, double &dmax, const QString &str_parameter)
+void View::findMinMaxValue(Ufkt *ufkt, char p_mode, bool minimum, double &dmin, double &dmax, const TQString &str_parameter)
 {
 	double x, y = 0;
 	double result_x = 0;
@@ -1210,7 +1210,7 @@ void View::findMinMaxValue(Ufkt *ufkt, char p_mode, bool minimum, double &dmin,
 	// TODO: parameter sliders
 	if ( !ufkt->parameters.isEmpty() )
 	{
-		for ( QValueList<ParameterValueItem>::Iterator it = ufkt->parameters.begin(); it != ufkt->parameters.end(); ++it )
+		for ( TQValueList<ParameterValueItem>::Iterator it = ufkt->parameters.begin(); it != ufkt->parameters.end(); ++it )
 		{
 			if ( (*it).expression == str_parameter)
 			{
@@ -1354,12 +1354,12 @@ void View::findMinMaxValue(Ufkt *ufkt, char p_mode, bool minimum, double &dmin,
 	}
 }
 
-void View::getYValue(Ufkt *ufkt, char p_mode,  double x, double &y, const QString &str_parameter)
+void View::getYValue(Ufkt *ufkt, char p_mode,  double x, double &y, const TQString &str_parameter)
 {
 	// TODO: parameter sliders
 	if ( !ufkt->parameters.isEmpty() )
 	{
-		for ( QValueList<ParameterValueItem>::Iterator it = ufkt->parameters.begin(); it != ufkt->parameters.end(); ++it )
+		for ( TQValueList<ParameterValueItem>::Iterator it = ufkt->parameters.begin(); it != ufkt->parameters.end(); ++it )
 		{
 			if ( (*it).expression == str_parameter)
 			{
@@ -1447,7 +1447,7 @@ void View::getYValue(Ufkt *ufkt, char p_mode,  double x, double &y, const QStrin
 	}
 }
 
-void View::keyPressEvent( QKeyEvent * e)
+void View::keyPressEvent( TQKeyEvent * e)
 {
     if ( zoom_mode != Z_Normal && e->key() == Qt::Key_Escape )
     {
@@ -1469,14 +1469,14 @@ void View::keyPressEvent( QKeyEvent * e)
 
 	if (csmode==-1 ) return;
 
-	QMouseEvent *event;
+	TQMouseEvent *event;
 	if (e->key() == Qt::Key_Left )
-		event = new QMouseEvent(QEvent::MouseMove,QPoint(fcx-1,fcy-1),Qt::LeftButton,Qt::LeftButton);
+		event = new TQMouseEvent(TQEvent::MouseMove,TQPoint(fcx-1,fcy-1),Qt::LeftButton,Qt::LeftButton);
 	else if (e->key() == Qt::Key_Right )
-		event = new QMouseEvent(QEvent::MouseMove,QPoint(fcx+1,fcy+1),Qt::LeftButton,Qt::LeftButton);
+		event = new TQMouseEvent(TQEvent::MouseMove,TQPoint(fcx+1,fcy+1),Qt::LeftButton,Qt::LeftButton);
 	else if (e->key() == Qt::Key_Up || e->key() == Qt::Key_Down) //switch graph in trace mode
 	{
-		QValueVector<Ufkt>::iterator it = &m_parser->ufkt[m_parser->ixValue(csmode)];
+		TQValueVector<Ufkt>::iterator it = &m_parser->ufkt[m_parser->ixValue(csmode)];
 		int const ke=it->parameters.count();
 		if (ke>0)
 		{
@@ -1560,31 +1560,31 @@ void View::keyPressEvent( QKeyEvent * e)
 			break;
 		case 1:
 			{
-				QString function = it->fstr;
+				TQString function = it->fstr;
 				function = function.left(function.find('(')) + '\'';
 				setStatusBar(function,4);
 				break;
 			}
 		case 2:
 			{
-				QString function = it->fstr;
+				TQString function = it->fstr;
 				function = function.left(function.find('(')) + "\'\'";
 				setStatusBar(function,4);
 				break;
 			}
 		}
-		event = new QMouseEvent(QEvent::MouseMove,QPoint(fcx,fcy),Qt::LeftButton,Qt::LeftButton);
+		event = new TQMouseEvent(TQEvent::MouseMove,TQPoint(fcx,fcy),Qt::LeftButton,Qt::LeftButton);
 	}
 	else if ( e->key() == Qt::Key_Space  )
 	{
-		event = new QMouseEvent(QEvent::MouseButtonPress,QCursor::pos(),Qt::RightButton,Qt::RightButton);
+		event = new TQMouseEvent(TQEvent::MouseButtonPress,TQCursor::pos(),Qt::RightButton,Qt::RightButton);
 		mousePressEvent(event);
 		delete event;
 		return;
 	}
 	else
 	{
-		event = new QMouseEvent(QEvent::MouseButtonPress,QPoint(fcx,fcy),Qt::LeftButton,Qt::LeftButton);
+		event = new TQMouseEvent(TQEvent::MouseButtonPress,TQPoint(fcx,fcy),Qt::LeftButton,Qt::LeftButton);
 		mousePressEvent(event);
 		delete event;
 		return;
@@ -1593,14 +1593,14 @@ void View::keyPressEvent( QKeyEvent * e)
 	delete event;
 }
 
-void View::areaUnderGraph( Ufkt *ufkt, char const p_mode,  double &dmin, double &dmax, const QString &str_parameter, QPainter *DC )
+void View::areaUnderGraph( Ufkt *ufkt, char const p_mode,  double &dmin, double &dmax, const TQString &str_parameter, TQPainter *DC )
 {
 	double x, y = 0;
 	float calculated_area=0;
 	int rectheight;
 	areaMin = dmin;
-	QPoint p;
-	QColor color;
+	TQPoint p;
+	TQColor color;
 	switch(p_mode)
 	{
 	case 0:
@@ -1620,7 +1620,7 @@ void View::areaUnderGraph( Ufkt *ufkt, char const p_mode,  double &dmin, double
 	{
 		int ly;
 		buffer.fill(backgroundcolor);
-		DC = new QPainter(&buffer);
+		DC = new TQPainter(&buffer);
 		ly=(int)((ymax-ymin)*100.*drskaly/tlgy);
 		DC->scale((float)h/(float)(ly+2*ref.y()), (float)h/(float)(ly+2*ref.y()));
 	}
@@ -1634,7 +1634,7 @@ void View::areaUnderGraph( Ufkt *ufkt, char const p_mode,  double &dmin, double
 	// TODO: parameter sliders
 	if ( !ufkt->parameters.isEmpty() )
 	{
-		for ( QValueList<ParameterValueItem>::Iterator it = ufkt->parameters.begin(); it != ufkt->parameters.end(); ++it )
+		for ( TQValueList<ParameterValueItem>::Iterator it = ufkt->parameters.begin(); it != ufkt->parameters.end(); ++it )
 		{
 			if ( (*it).expression == str_parameter)
 			{
@@ -1657,7 +1657,7 @@ void View::areaUnderGraph( Ufkt *ufkt, char const p_mode,  double &dmin, double
 		ufkt->oldyprim = ufkt->integral_precision;
 		//paintEvent(0);
 
-		/*QPainter p;
+		/*TQPainter p;
 		p.begin(this);
 		bitBlt( this, 0, 0, &buffer, 0, 0, width(), height() );
 		p.end();*/
@@ -1832,7 +1832,7 @@ void View::updateSliders()
 		}
 	}
 
-	for(QValueVector<Ufkt>::iterator it=m_parser->ufkt.begin(); it!=m_parser->ufkt.end(); ++it)
+	for(TQValueVector<Ufkt>::iterator it=m_parser->ufkt.begin(); it!=m_parser->ufkt.end(); ++it)
 	{
 		if (it->fname.isEmpty() ) continue;
 		if( it->use_slider > -1  &&  (it->f_mode || it->f1_mode || it->f2_mode || it->integral_mode))
@@ -1841,8 +1841,8 @@ void View::updateSliders()
 			if ( sliders[ it->use_slider ] == 0 )
 			{
 				sliders[ it->use_slider ] = new KSliderWindow( this, it->use_slider);
-				connect( sliders[ it->use_slider ]->slider, SIGNAL( valueChanged( int ) ), this, SLOT( drawPlot() ) );
-				connect( sliders[ it->use_slider ], SIGNAL( windowClosed( int ) ), this , SLOT( sliderWindowClosed(int) ) );
+				connect( sliders[ it->use_slider ]->slider, TQT_SIGNAL( valueChanged( int ) ), this, TQT_SLOT( drawPlot() ) );
+				connect( sliders[ it->use_slider ], TQT_SIGNAL( windowClosed( int ) ), this , TQT_SLOT( sliderWindowClosed(int) ) );
 				mnuSliders[ it->use_slider ]->setChecked(true);  //set the slider-item in the menu
 			}
 			sliders[ it->use_slider ]->show();
@@ -1876,14 +1876,14 @@ void View::mnuHide_clicked()
 	if ( !ufkt->f_mode && !ufkt->f1_mode && !ufkt->f2_mode) //all graphs for the function are hidden
 	{
 		csmode=-1;
-		QMouseEvent *event = new QMouseEvent(QMouseEvent::KeyPress,QCursor::pos(),Qt::LeftButton,Qt::LeftButton);
+		TQMouseEvent *event = new TQMouseEvent(TQMouseEvent::KeyPress,TQCursor::pos(),Qt::LeftButton,Qt::LeftButton);
 		mousePressEvent(event); //leave trace mode
 		delete event;
 		return;
 	}
 	else
 	{
-		QKeyEvent *event = new QKeyEvent(QKeyEvent::KeyPress,Qt::Key_Up ,Qt::Key_Up ,0);
+		TQKeyEvent *event = new TQKeyEvent(TQKeyEvent::KeyPress,Qt::Key_Up ,Qt::Key_Up ,0);
 		keyPressEvent(event); //change selected graph
 		delete event;
 		return;
@@ -1894,7 +1894,7 @@ void View::mnuRemove_clicked()
   if ( csmode == -1 )
     return;
   
-	if ( KMessageBox::warningContinueCancel(this,i18n("Are you sure you want to remove this function?"), QString::null, KStdGuiItem::del()) == KMessageBox::Continue )
+	if ( KMessageBox::warningContinueCancel(this,i18n("Are you sure you want to remove this function?"), TQString::null, KStdGuiItem::del()) == KMessageBox::Continue )
 	{
 		Ufkt *ufkt =  &m_parser->ufkt[m_parser->ixValue(csmode)];
 		char const function_type = ufkt->fstr[0].latin1();
@@ -1904,7 +1904,7 @@ void View::mnuRemove_clicked()
 		if (csmode!=-1) // if trace mode is enabled
 		{
 		  csmode=-1;
-		  QMouseEvent *event = new QMouseEvent(QMouseEvent::KeyPress,QCursor::pos(),Qt::LeftButton,Qt::LeftButton);
+		  TQMouseEvent *event = new TQMouseEvent(TQMouseEvent::KeyPress,TQCursor::pos(),Qt::LeftButton,Qt::LeftButton);
 		  mousePressEvent(event); //leave trace mode
 		  delete event;
 		}
@@ -1927,7 +1927,7 @@ void View::mnuEdit_clicked()
 		KEditParametric* editParametric = new KEditParametric( m_parser, this );
 		editParametric->setCaption(i18n( "New Parametric Plot" ));
 		editParametric->initDialog( csmode,y_index );
-		if( editParametric->exec() == QDialog::Accepted )
+		if( editParametric->exec() == TQDialog::Accepted )
 		{
 			drawPlot();
 			m_modified = true;
@@ -1939,7 +1939,7 @@ void View::mnuEdit_clicked()
 		EditFunction* editFunction = new EditFunction( m_parser, this );
 		editFunction->setCaption(i18n( "Edit Function Plot" ));
 		editFunction->initDialog( csmode );
-		if( editFunction->exec() == QDialog::Accepted )
+		if( editFunction->exec() == TQDialog::Accepted )
 		{
 			drawPlot();
 			updateSliders();
@@ -1993,7 +1993,7 @@ void View::mnuZoomIn_clicked()
       resetZoom();
     else
     {
-	   setCursor( QCursor( SmallIcon( "magnify", 32), 10, 10 ) );
+	   setCursor( TQCursor( SmallIcon( "magnify", 32), 10, 10 ) );
 	   zoom_mode = Z_ZoomIn;
     }
 }
@@ -2004,7 +2004,7 @@ void View::mnuZoomOut_clicked()
     resetZoom();
   else
   {
-	setCursor( QCursor( SmallIcon( "lessen", 32), 10, 10 ) );
+	setCursor( TQCursor( SmallIcon( "lessen", 32), 10, 10 ) );
 	zoom_mode = Z_ZoomOut;
   }
 }
@@ -2037,7 +2037,7 @@ void View::mnuTrig_clicked()
 	Settings::setYRange(4); //custom y-range
 	drawPlot(); //update all graphs
 }
-void View::invertColor(QColor &org, QColor &inv)
+void View::invertColor(TQColor &org, TQColor &inv)
 {
 	int r = org.red()-255;
 	if ( r<0) r=r*-1;
@@ -2059,10 +2059,10 @@ void View::restoreCursor()
 			setCursor(Qt::CrossCursor);
 			break;
 		case Z_ZoomIn: //zoom in
-			setCursor( QCursor( SmallIcon( "magnify", 32), 10, 10 ) );
+			setCursor( TQCursor( SmallIcon( "magnify", 32), 10, 10 ) );
 			break;
 		case Z_ZoomOut: //zoom out
-			setCursor( QCursor( SmallIcon( "lessen", 32), 10, 10 ) );
+			setCursor( TQCursor( SmallIcon( "lessen", 32), 10, 10 ) );
 			break;
 		case Z_Center: //center a point
 			setCursor(Qt::PointingHandCursor);
@@ -2070,17 +2070,17 @@ void View::restoreCursor()
 	}
 }
 
-bool View::event( QEvent * e )
+bool View::event( TQEvent * e )
 {
-	if ( e->type() == QEvent::WindowDeactivate && isDrawing)
+	if ( e->type() == TQEvent::WindowDeactivate && isDrawing)
 	{
 		stop_calculating = true;
 		return true;
 	}
-	return QWidget::event(e); //send the information further
+	return TQWidget::event(e); //send the information further
 }
 
-void View::setStatusBar(const QString &text, const int id)
+void View::setStatusBar(const TQString &text, const int id)
 {
 	if ( m_readonly) //if KmPlot is shown as a KPart with e.g Konqueror, it is only possible to change the status bar in one way: to call setStatusBarText
 	{
@@ -2101,7 +2101,7 @@ void View::setStatusBar(const QString &text, const int id)
 		default:
 			return;
 		}
-		QString statusbartext = m_statusbartext1;
+		TQString statusbartext = m_statusbartext1;
 		if ( !m_statusbartext1.isEmpty() && !m_statusbartext2.isEmpty() )
 			statusbartext.append("   |   ");
 		statusbartext.append(m_statusbartext2);
@@ -2115,32 +2115,32 @@ void View::setStatusBar(const QString &text, const int id)
 	}
 	else
 	{
-		QByteArray parameters;
-		QDataStream arg( parameters, IO_WriteOnly);
+		TQByteArray parameters;
+		TQDataStream arg( parameters, IO_WriteOnly);
 		arg << text << id;
-		m_dcop_client->send(m_dcop_client->appId(), "KmPlotShell","setStatusBarText(QString,int)", parameters);
+		m_dcop_client->send(m_dcop_client->appId(), "KmPlotShell","setStatusBarText(TQString,int)", parameters);
 	}
 }
 void View::startProgressBar(int steps)
 {
-	QByteArray data;
-	QDataStream stream(data, IO_WriteOnly);
+	TQByteArray data;
+	TQDataStream stream(data, IO_WriteOnly);
 	stream << steps;
 	m_dcop_client->send(m_dcop_client->appId(), "KmPlotShell","startProgressBar(int)", data);
 }
 bool View::stopProgressBar()
 {
-	QCString replyType;
-	QByteArray replyData;
-	m_dcop_client->call(m_dcop_client->appId(), "KmPlotShell","stopProgressBar()", QByteArray(), replyType, replyData);
+	TQCString replyType;
+	TQByteArray replyData;
+	m_dcop_client->call(m_dcop_client->appId(), "KmPlotShell","stopProgressBar()", TQByteArray(), replyType, replyData);
 	bool result;
-	QDataStream stream(replyData, IO_ReadOnly);
+	TQDataStream stream(replyData, IO_ReadOnly);
 	stream >> result;
 	return result;
 }
 void View::increaseProgressBar()
 {
-	m_dcop_client->send(m_dcop_client->appId(), "KmPlotShell","increaseProgressBar()", QByteArray());
+	m_dcop_client->send(m_dcop_client->appId(), "KmPlotShell","increaseProgressBar()", TQByteArray());
 }
 
 void View::sliderWindowClosed(int num)
diff --git a/kmplot/kmplot/View.h b/kmplot/kmplot/View.h
index a3079c92..a28aadbc 100644
--- a/kmplot/kmplot/View.h
+++ b/kmplot/kmplot/View.h
@@ -28,7 +28,7 @@
 #undef	 GrayScale
 
 // Qt includes
-#include <qpixmap.h>
+#include <tqpixmap.h>
 
 // KDE includes
 #include <dcopclient.h>
@@ -64,28 +64,28 @@ enum ZoomMode
  * It is the central widget of MainDlg.
  * @see MainDlg, MainDlg::view
  */
-class View : public QWidget, virtual public ViewIface
+class View : public TQWidget, virtual public ViewIface
 {
 	Q_OBJECT
 public:
 	/// Contructor sets up the parser, too.
-  View(bool, bool &, KPopupMenu *, QWidget* parent=NULL, const char* name=NULL );
+  View(bool, bool &, KPopupMenu *, TQWidget* parent=NULL, const char* name=NULL );
 	void setMinMaxDlg(KMinMax *);
 	virtual ~View();
 
 	/// Reimplemented to draw all stuff to the view.
-	void draw(QPaintDevice *, int const);
+	void draw(TQPaintDevice *, int const);
 	/// Getting all relevant settings using KConfig XT class Settings.
 	void getSettings();
 	/// Clears all functions in the parser and gets default settings.
 	/// @see getSettings
 	void init();
 	/// Finding the minimum or maximum value
-	void findMinMaxValue(Ufkt *, char, bool, double &, double &,const QString &);
+	void findMinMaxValue(Ufkt *, char, bool, double &, double &,const TQString &);
 	/// get a y-value from a x-value
-	void getYValue(Ufkt * , char, double , double &,const QString &);
+	void getYValue(Ufkt * , char, double , double &,const TQString &);
 	/// draw and calculate the area between the graph and the x-axis.
-	void areaUnderGraph(Ufkt *, char const, double &, double &, const QString &, QPainter* );
+	void areaUnderGraph(Ufkt *, char const, double &, double &, const TQString &, TQPainter* );
 	/// the calculation was cancelled by the user
 	bool isCalculationStopped();
 
@@ -106,7 +106,7 @@ public:
 	Ufkt * areaUfkt;
 	char areaPMode;
 	double areaMin, areaMax;
-	QString areaParameter;
+	TQString areaParameter;
 
 	/// Slider controlling parameter values
 	KSliderWindow* sliders[ SLIDER_COUNT ];
@@ -137,39 +137,39 @@ public slots:
 	void mnuTrig_clicked();
 
 protected slots:
-	void paintEvent(QPaintEvent *);
-	void resizeEvent(QResizeEvent *);
+	void paintEvent(TQPaintEvent *);
+	void resizeEvent(TQResizeEvent *);
 	/// Updating the cross hair.
-	void mouseMoveEvent(QMouseEvent *);
+	void mouseMoveEvent(TQMouseEvent *);
 	/// Toggles the trace mode if the cursor is near to a plot.
-	void mousePressEvent(QMouseEvent *);
+	void mousePressEvent(TQMouseEvent *);
 	/// when a key is pressed and the graph widget has focus
-	void keyPressEvent(QKeyEvent * );
+	void keyPressEvent(TQKeyEvent * );
 	/// called when a mouse key is released
-	void mouseReleaseEvent ( QMouseEvent * e );
+	void mouseReleaseEvent ( TQMouseEvent * e );
 	/// Is needed to be reimplement so that the user can stop a preview-drawing
-	bool event( QEvent * e );
+	bool event( TQEvent * e );
 
 signals:
-	void setStatusBarText(const QString &);
+	void setStatusBarText(const TQString &);
     void resetZoom();
 
 private:
 	/// Print out table with additional information.
 	/// Only for printing.
-	void drawHeaderTable(QPainter *);
+	void drawHeaderTable(TQPainter *);
 	/// Draw the function plots.
-	void plotfkt(Ufkt *ufkt, QPainter*);
+	void plotfkt(Ufkt *ufkt, TQPainter*);
 	/// Gets the greek pi symbol.
-	void setpi(QString *);
+	void setpi(TQString *);
 	/// in trace mode checks, if the function is (near by) zero
 	bool root(double *, Ufkt *);
 	///return the inverted color
-	void invertColor(QColor &, QColor &);
+	void invertColor(TQColor &, TQColor &);
 	/// Restore the mouse cursor when a drawing is finished
 	void restoreCursor();
 	/// Changes the text in the statusbar
-	void setStatusBar(const QString &text, const int id);
+	void setStatusBar(const TQString &text, const int id);
 	/// Functions for the progressbar
 	bool stopProgressBar();
 	void startProgressBar(int);
@@ -195,15 +195,15 @@ private:
 	bool rootflg;
 
 	CDiagr dgr;	///< Coordinate system
-	QPoint ref;
-	QRect area,
+	TQPoint ref;
+	TQRect area,
 	PlotArea;
-	QPixmap hline,
+	TQPixmap hline,
 	vline;
-	QWMatrix wm;
+	TQWMatrix wm;
 
 	double tlgx, tlgy, drskalx, drskaly;
-	QString tlgxstr, tlgystr, drskalxstr, drskalystr;
+	TQString tlgxstr, tlgystr, drskalxstr, drskalystr;
 	double stepWidth; ///< Absolute step width
 
 	/** @name Plotrange
@@ -216,14 +216,14 @@ private:
 	 */
 	//@{
 	///Convert axes range predefinition index to boundaries.
-	void getMinMax(int koord, QString &mini, QString &maxi);
+	void getMinMax(int koord, TQString &mini, TQString &maxi);
 	/** Handle predefiend axes ranges.
 	*
 	* @p koord can have the values 0 to 4 which have the following meanings: 
 	*
 	* In the last case @p minstr and @p maxstr are evaluated.
 	*/
-	void coordToMinMax( const int koord, const QString &minStr, const QString &maxStr,
+	void coordToMinMax( const int koord, const TQString &minStr, const TQString &maxStr,
 	                    double &min, double &max );
 	/// Sets the plot range from Settings
 	void setPlotRange();
@@ -241,13 +241,13 @@ private:
 	/// if stop_calculating is true, the user has canceled drawing of an integral graph
 	bool stop_calculating;
 	/// the background color of the graph
-	QColor backgroundcolor;
+	TQColor backgroundcolor;
 	/// the inverted background color used by the "Fadenkreuz"
-	QColor inverted_backgroundcolor;
+	TQColor inverted_backgroundcolor;
 	/// pointer to KMinMax
 	KMinMax *m_minmax;
 	///buffer the current window so all functions don't need to be re-drawed
-	QPixmap buffer;
+	TQPixmap buffer;
 	/// the popup menu
 	KPopupMenu *m_popupmenu;
 	/// is set to true if an integral is calculated
@@ -255,7 +255,7 @@ private:
 	///status of the popup menu
 	char m_popupmenushown; /// 0==no popup 1==popup 2==popup+trace mode before
 	/// for zoom-mode
-	QPoint rectangle_point;
+	TQPoint rectangle_point;
 	/*char zoom_mode;*/ ///0=normal 1=rectangular zoom, 2=zoom in, 3=zoom out ,4=drawing a rectangle, 5=center
     ZoomMode zoom_mode;
 	/// true == modifications not saved
@@ -264,10 +264,10 @@ private:
 	bool const m_readonly;
 
 	DCOPClient *m_dcop_client;
-	QString m_statusbartext1;
-	QString m_statusbartext2;
-	QString m_statusbartext3;
-	QString m_statusbartext4;
+	TQString m_statusbartext1;
+	TQString m_statusbartext2;
+	TQString m_statusbartext3;
+	TQString m_statusbartext4;
 };
 
 #endif // View_included
diff --git a/kmplot/kmplot/coordsconfigdialog.cpp b/kmplot/kmplot/coordsconfigdialog.cpp
index bc6df41e..37e92b16 100644
--- a/kmplot/kmplot/coordsconfigdialog.cpp
+++ b/kmplot/kmplot/coordsconfigdialog.cpp
@@ -26,13 +26,13 @@
 #include <klocale.h>
 #include <klineedit.h>
 #include <kmessagebox.h>
-#include <qradiobutton.h>
+#include <tqradiobutton.h>
 
 #include "settings.h"
 #include "settingspagecoords.h"
 #include "coordsconfigdialog.h"
 
-CoordsConfigDialog::CoordsConfigDialog(XParser *p, QWidget *parent)
+CoordsConfigDialog::CoordsConfigDialog(XParser *p, TQWidget *parent)
 	: KConfigDialog(parent, "coords", Settings::self()), m_parser(p)
 {
 	configAxesDialog = new SettingsPageCoords( 0, "coordsSettings" );
diff --git a/kmplot/kmplot/coordsconfigdialog.h b/kmplot/kmplot/coordsconfigdialog.h
index f7f8cc48..9fe15490 100644
--- a/kmplot/kmplot/coordsconfigdialog.h
+++ b/kmplot/kmplot/coordsconfigdialog.h
@@ -40,7 +40,7 @@ class CoordsConfigDialog : public KConfigDialog
 {
 	Q_OBJECT
 	public:
-		CoordsConfigDialog(XParser *p, QWidget *parent = 0);
+		CoordsConfigDialog(XParser *p, TQWidget *parent = 0);
 		~CoordsConfigDialog();
 	protected slots:
 		virtual void slotOk();
diff --git a/kmplot/kmplot/diagr.cpp b/kmplot/kmplot/diagr.cpp
index ba438c7b..ba65fce8 100644
--- a/kmplot/kmplot/diagr.cpp
+++ b/kmplot/kmplot/diagr.cpp
@@ -61,7 +61,7 @@ CDiagr::CDiagr()
 CDiagr::~CDiagr()
 {}
 
-void CDiagr::Create(QPoint Ref, 			    // Bezugspunkt links unten
+void CDiagr::Create(TQPoint Ref, 			    // Bezugspunkt links unten
                     int lx, int ly, 			// Achsenl�gen
                     double xmin, double xmax,   // x-Wertebereich
                     double ymin, double ymax) 	// y-Wertebereich
@@ -105,9 +105,9 @@ void CDiagr::Skal( double ex, double ey )
 }
 
 
-void CDiagr::Plot(QPainter* pDC)
+void CDiagr::Plot(TQPainter* pDC)
 {
-	QPen pen(frameColor, borderThickness);
+	TQPen pen(frameColor, borderThickness);
 
 	if( g_mode != GRID_NONE )
 		drawGrid( pDC ); // draw the grid
@@ -221,13 +221,13 @@ double CDiagr::Transy(int y)        // Bildschirmkoordinate
 }
 
 
-void CDiagr::drawAxes( QPainter* pDC )	// draw axes
+void CDiagr::drawAxes( TQPainter* pDC )	// draw axes
 {	int a, b, tl;
 	double d, da, db;
 
 	if( Settings::showAxes() )
 	{  
-		pDC->setPen( QPen( axesColor, axesLineWidth ) );
+		pDC->setPen( TQPen( axesColor, axesLineWidth ) );
                 b = Transy(0.);
                 a = PlotArea.right();
 		pDC->Lineh(PlotArea.left(), b, a);	    // x-Achse
@@ -249,7 +249,7 @@ void CDiagr::drawAxes( QPainter* pDC )	// draw axes
 		}
 	}
 
-	pDC->setPen( QPen( axesColor, ticWidth ) );
+	pDC->setPen( TQPen( axesColor, ticWidth ) );
 	if( Settings::showAxes() )
 	{
 		da=oy-ticLength;
@@ -328,11 +328,11 @@ void CDiagr::drawAxes( QPainter* pDC )	// draw axes
 }
 
 
-void CDiagr::drawGrid( QPainter* pDC )
+void CDiagr::drawGrid( TQPainter* pDC )
 {
 	int a, b;
 	double d, x, y;
-	QPen pen( gridColor, gridLineWidth );
+	TQPen pen( gridColor, gridLineWidth );
 
 	pDC->setPen(pen);
 	if( g_mode==GRID_LINES )
@@ -370,7 +370,7 @@ void CDiagr::drawGrid( QPainter* pDC )
 	{
 		int y2;
 		double w;
-		QRect const rc=PlotArea;
+		TQRect const rc=PlotArea;
 
 		pDC->setClipRect(pDC->xForm(rc));
 		double const c=hypot(xmd*skx, ymd*sky);
@@ -404,21 +404,21 @@ void CDiagr::drawGrid( QPainter* pDC )
 }
 
 
-void CDiagr::drawLabels(QPainter* pDC)
+void CDiagr::drawLabels(TQPainter* pDC)
 {
 	int const dx=15;
 	int const dy=40;
-	QFont const font=QFont( Settings::axesFont(), Settings::axesFontSize() );
+	TQFont const font=TQFont( Settings::axesFont(), Settings::axesFontSize() );
 	pDC->setFont(font);
 	int const x=Transx(0.);
 	int const y=Transy(0.);
 	double d;
 	int n;
-	QString s;
+	TQString s;
 
 	//pDC->drawText(x-dx, y+dy, 0, 0, Qt::AlignRight|Qt::AlignVCenter|Qt::DontClip, "0");
 	char draw_next=0;
-	QFontMetrics const test(font);
+	TQFontMetrics const test(font);
 	int swidth=0;
 
 	for(d=tsx, n=(int)ceil(xmin/ex); d<xmd; d+=ex, ++n)
@@ -434,15 +434,15 @@ void CDiagr::drawLabels(QPainter* pDC)
 		if(fabs(ex-M_PI/2.)<1e-3)
 		{
 			if(n==-1 || n==1)
-				s+="pi/2";//s+=QChar(960)+QString("/2");
+				s+="pi/2";//s+=TQChar(960)+TQString("/2");
 			else if(n%2 == 0)
 			{
 				if(n==-2 || n==2)
-					s+="pi";//s+=QChar(960);
+					s+="pi";//s+=TQChar(960);
 				else
 				{
-					s=QString().sprintf("%+d", n/2);
-					s+="pi";//s+=QChar(960);
+					s=TQString().sprintf("%+d", n/2);
+					s+="pi";//s+=TQChar(960);
 				}
 			}
 			else
@@ -468,15 +468,15 @@ void CDiagr::drawLabels(QPainter* pDC)
 		else if(fabs(ex-M_PI/3.)<1e-3)
 		{
 			if(n==-1 || n==1)
-				s+="pi/3";//s+=QChar(960)+QString("/3");
+				s+="pi/3";//s+=TQChar(960)+TQString("/3");
 			else if(n%3==0)
 			{
 				if(n==-3 || n==3)
-					s+="pi";//s+=QChar(960);
+					s+="pi";//s+=TQChar(960);
 				else
 				{
-					s=QString().sprintf("%+d", n/3);
-					s+="pi";//s+=QChar(960);
+					s=TQString().sprintf("%+d", n/3);
+					s+="pi";//s+=TQChar(960);
 				}
 			}
 			else
@@ -502,15 +502,15 @@ void CDiagr::drawLabels(QPainter* pDC)
 		else if(fabs(ex-M_PI/4.)<1e-3)
 		{
 			if(n==-1 || n==1)
-				s+="pi/4";//s+=QChar(960)+QString("/4");
+				s+="pi/4";//s+=TQChar(960)+TQString("/4");
 			else if(n%4==0)
 			{
 				if(n==-4 || n==4)
-					s+="pi";//s+=QChar(960);
+					s+="pi";//s+=TQChar(960);
 				else
 				{
-					s=QString().sprintf("%+d", n/4);
-					s+="pi";//s+=QChar(960);
+					s=TQString().sprintf("%+d", n/4);
+					s+="pi";//s+=TQChar(960);
 				}
 			}
 			else
@@ -535,7 +535,7 @@ void CDiagr::drawLabels(QPainter* pDC)
 		}
 		else if((n%5==0 || n==1 || n==-1 || draw_next))
 		{
-			s=QString().sprintf("%+0.3g", n*ex);
+			s=TQString().sprintf("%+0.3g", n*ex);
 			swidth = test.width(s);
 			if (  Transx(d)-x<swidth && Transx(d)-x>-swidth && draw_next==0)
 			{
@@ -574,15 +574,15 @@ void CDiagr::drawLabels(QPainter* pDC)
 		if(fabs(ey-M_PI/2.)<1e-3)
 		{
 			if(n==-1 || n==1)
-				s+="pi/2";//s+=QChar(960)+QString("/2");
+				s+="pi/2";//s+=TQChar(960)+TQString("/2");
 			else if(n%2==0)
 			{
 				if(n==-2 || n==2)
-					s+="pi";//s+=QChar(960);
+					s+="pi";//s+=TQChar(960);
 				else
 				{
-					s=QString().sprintf("%+d", n/2);
-					s+="pi";//s+=QChar(960);
+					s=TQString().sprintf("%+d", n/2);
+					s+="pi";//s+=TQChar(960);
 				}
 			}
 			else
@@ -595,15 +595,15 @@ void CDiagr::drawLabels(QPainter* pDC)
 		else if(fabs(ey-M_PI/3.)<1e-3)
 		{
 			if(n==-1 || n==1)
-				s+="pi/3";//s+=QChar(960)+QString("/3");
+				s+="pi/3";//s+=TQChar(960)+TQString("/3");
 			else if(n%3==0)
 			{
 				if(n==-3 || n==3)
-					s+="pi";//s+=QChar(960);
+					s+="pi";//s+=TQChar(960);
 				else
 				{
-					s=QString().sprintf("%+d", n/3);
-					s+="pi";//s+=QChar(960);
+					s=TQString().sprintf("%+d", n/3);
+					s+="pi";//s+=TQChar(960);
 				}
 			}
 			else
@@ -616,15 +616,15 @@ void CDiagr::drawLabels(QPainter* pDC)
 		else if(fabs(ey-M_PI/4.)<1e-3)
 		{
 			if(n==-1 || n==1)
-				s+="pi/4";//s+=QChar(960)+QString("/4");
+				s+="pi/4";//s+=TQChar(960)+TQString("/4");
 			else if(n%4==0)
 			{
 				if(n==-4 || n==4)
-					s+="pi";//s+=QChar(960);
+					s+="pi";//s+=TQChar(960);
 				else
 				{
-					s=QString().sprintf("%+d", n/4);
-					s+="pi";//s+=QChar(960);
+					s=TQString().sprintf("%+d", n/4);
+					s+="pi";//s+=TQChar(960);
 				}
 			}
 			else
@@ -636,7 +636,7 @@ void CDiagr::drawLabels(QPainter* pDC)
 		}
 		else if((n%5==0 || n==1 || n==-1))
 		{
-			s=QString().sprintf("%+0.3g", n*ey);
+			s=TQString().sprintf("%+0.3g", n*ey);
 			if (xmin>=0)
 				pDC->drawText(x+dx, Transy(d), 0, 0, Qt::AlignVCenter|Qt::AlignLeft|Qt::DontClip, s);
 			else
diff --git a/kmplot/kmplot/diagr.h b/kmplot/kmplot/diagr.h
index 45cae5a6..23375821 100644
--- a/kmplot/kmplot/diagr.h
+++ b/kmplot/kmplot/diagr.h
@@ -33,7 +33,7 @@
 #include <stdio.h>
 
 // Qt includes 
-#include <qpainter.h>
+#include <tqpainter.h>
 
 //@{
 /// Some abbreviations for horizontal and vertical lines.
@@ -61,18 +61,18 @@ public:
 	~CDiagr();
 
 	/// Sets all members to current values.
-	void Create( QPoint Ref,
+	void Create( TQPoint Ref,
 	               int lx, int ly,
 	               double xmin, double xmax,
 	               double ymin, double ymax );
 	/// Sets the current values for the scaling factors
 	void Skal( double ex, double ey );
 	/// Draws all requested parts of the diagram (axes, labels, grid e.g.)
-	void Plot( QPainter* pDC );
+	void Plot( TQPainter* pDC );
 	/// Returns the rectangle around the core of the plot area.
-	QRect GetPlotArea() { return PlotArea; }
+	TQRect GetPlotArea() { return PlotArea; }
 	/// Returns the rectangle for the frame around the plot. Extra frame is bigger.
-	QRect GetFrame() { return m_frame; }
+	TQRect GetFrame() { return m_frame; }
 
 	/** @name Transformations */
 	//@{
@@ -104,11 +104,11 @@ public:
 private:
 
 	/// Draw the coordinate axes.
-	void drawAxes(QPainter*);
+	void drawAxes(TQPainter*);
 	/// Draw the grid.
-	void drawGrid( QPainter* );
+	void drawGrid( TQPainter* );
 	/// Write labels.
-	void drawLabels(QPainter*);
+	void drawLabels(TQPainter*);
 	/// Current grid style.
 	int g_mode;
 
@@ -138,8 +138,8 @@ private:
 	double skx, sky;
 	//@}
 	
-	QRect PlotArea;	///< plot area
-	QRect m_frame;	///< frame around the plot
+	TQRect PlotArea;	///< plot area
+	TQRect m_frame;	///< frame around the plot
 };
 
 #endif // diagr_included
diff --git a/kmplot/kmplot/editfunction.cpp b/kmplot/kmplot/editfunction.cpp
index 60786d21..2d75cc49 100644
--- a/kmplot/kmplot/editfunction.cpp
+++ b/kmplot/kmplot/editfunction.cpp
@@ -24,15 +24,15 @@
 */
 
 // Qt includes
-#include <qcheckbox.h>
-#include <qcombobox.h>
-#include <qdialog.h>
-#include <qframe.h>
-#include <qlabel.h>
-#include <qlayout.h>
-#include <qradiobutton.h>
-#include <qstringlist.h>
-#include <qvbox.h>
+#include <tqcheckbox.h>
+#include <tqcombobox.h>
+#include <tqdialog.h>
+#include <tqframe.h>
+#include <tqlabel.h>
+#include <tqlayout.h>
+#include <tqradiobutton.h>
+#include <tqstringlist.h>
+#include <tqvbox.h>
 
 
 // KDE includes
@@ -56,23 +56,23 @@
 #include "editintegralpage.h"
 #include "kparametereditor.h"
 
-EditFunction::EditFunction( XParser* parser, QWidget* parent, const char* name ) : 
+EditFunction::EditFunction( XParser* parser, TQWidget* parent, const char* name ) : 
 	KDialogBase( IconList, "Caption", Help|Ok|Cancel, Ok, parent, name ), m_parser(parser)
 {
-	QVBox *page0 = addVBoxPage( i18n("Function"), i18n( "Function" ), SmallIcon( "func", 32 ) );
+	TQVBox *page0 = addVBoxPage( i18n("Function"), i18n( "Function" ), SmallIcon( "func", 32 ) );
 	editfunctionpage = new EditFunctionPage( page0 );
-	QVBox *page1 = addVBoxPage( i18n("Derivatives"), i18n( "Derivatives" ), SmallIcon( "deriv_func", 32 ) );
+	TQVBox *page1 = addVBoxPage( i18n("Derivatives"), i18n( "Derivatives" ), SmallIcon( "deriv_func", 32 ) );
 	editderivativespage = new EditDerivativesPage( page1 );
-	QVBox *page2 = addVBoxPage( i18n("Integral"), i18n( "Integral" ), SmallIcon( "integral_func", 32 ) );
+	TQVBox *page2 = addVBoxPage( i18n("Integral"), i18n( "Integral" ), SmallIcon( "integral_func", 32 ) );
 	editintegralpage = new EditIntegralPage( page2 );
 	for( int number = 0; number < SLIDER_COUNT; number++ )
 	{
 		editfunctionpage->listOfSliders->insertItem( i18n( "Slider No. %1" ).arg( number +1) );
 	}
-	connect( editfunctionpage->cmdParameter, SIGNAL ( clicked() ), this, SLOT( cmdParameter_clicked() ) );
-	connect( editfunctionpage->useNoParameter, SIGNAL ( toggled(bool) ), this, SLOT( noParameter_toggled(bool) ) );
-	connect( editfunctionpage->customMinRange, SIGNAL ( toggled(bool) ), this, SLOT( customMinRange_toggled(bool) ) );
-	connect( editfunctionpage->customMaxRange, SIGNAL ( toggled(bool) ), this, SLOT( customMaxRange_toggled(bool) ) );
+	connect( editfunctionpage->cmdParameter, TQT_SIGNAL ( clicked() ), this, TQT_SLOT( cmdParameter_clicked() ) );
+	connect( editfunctionpage->useNoParameter, TQT_SIGNAL ( toggled(bool) ), this, TQT_SLOT( noParameter_toggled(bool) ) );
+	connect( editfunctionpage->customMinRange, TQT_SIGNAL ( toggled(bool) ), this, TQT_SLOT( customMinRange_toggled(bool) ) );
+	connect( editfunctionpage->customMaxRange, TQT_SIGNAL ( toggled(bool) ), this, TQT_SLOT( customMaxRange_toggled(bool) ) );
     m_updatedfunction = 0;
 }
 
@@ -169,7 +169,7 @@ void EditFunction::setWidgets()
 
 void EditFunction::accept()
 {
-  QString f_str( editfunctionpage->equation->text() );
+  TQString f_str( editfunctionpage->equation->text() );
         
         if ( m_id!=-1 )
                 m_parser->fixFunctionName(f_str, XParser::Function, m_id);
@@ -312,7 +312,7 @@ void EditFunction::accept()
                         return;
                 }
                 added_ufkt =  &m_parser->ufkt[ix];
-                QString const old_fstr = added_ufkt->fstr;
+                TQString const old_fstr = added_ufkt->fstr;
                 if((  (!m_parameter.isEmpty() && editfunctionpage->useList->isChecked() ) || editfunctionpage->useSlider->isChecked() ) && !functionHas2Arguments() )
                         fixFunctionArguments(f_str); //adding an extra argument for the parameter value
                 added_ufkt->fstr = f_str;
@@ -426,7 +426,7 @@ void EditFunction::customMaxRange_toggled(bool status)
     editfunctionpage->max->setEnabled(false);
 }
 
-void EditFunction::fixFunctionArguments(QString &f_str)
+void EditFunction::fixFunctionArguments(TQString &f_str)
 {
 	int const openBracket = f_str.find( "(" );
 	int const closeBracket = f_str.find( ")" );
diff --git a/kmplot/kmplot/editfunction.h b/kmplot/kmplot/editfunction.h
index 9ef8ee05..308beadf 100644
--- a/kmplot/kmplot/editfunction.h
+++ b/kmplot/kmplot/editfunction.h
@@ -43,7 +43,7 @@ class EditFunction : public KDialogBase
 		/// @param parser points to the parser instance.
 		/// @param parent points to the parent widget.
 		/// @param name of this instance.
-		EditFunction( XParser* parser, QWidget* parent = NULL, const char* name = NULL );
+		EditFunction( XParser* parser, TQWidget* parent = NULL, const char* name = NULL );
 		/// Nothing special to do.
 		virtual ~EditFunction() {}
 		/// Fill the dialog's widgets with the properties of the parser function number index.
@@ -73,13 +73,13 @@ class EditFunction : public KDialogBase
 		/// Check, if the function has 2 arguments (function group)
 		bool functionHas2Arguments();
 		/// Adding an extra argument
-		void fixFunctionArguments(QString &);
+		void fixFunctionArguments(TQString &);
 		
 		/// Pointer to the parser instance
 		XParser* m_parser;
 		/// Current function index
 		int m_id;
-		QValueList<ParameterValueItem> m_parameter;
+		TQValueList<ParameterValueItem> m_parameter;
 		
 		EditFunctionPage* editfunctionpage;
 		EditDerivativesPage* editderivativespage;
diff --git a/kmplot/kmplot/kconstanteditor.cpp b/kmplot/kmplot/kconstanteditor.cpp
index 6014c82b..c2017c8a 100644
--- a/kmplot/kmplot/kconstanteditor.cpp
+++ b/kmplot/kmplot/kconstanteditor.cpp
@@ -31,24 +31,24 @@
 #include <klocale.h>
 #include <kmessagebox.h>
 #include <kstandarddirs.h>
-#include <qpushbutton.h>
-#include <qstringlist.h>
-#include <qvaluevector.h>
-#include <qdom.h>
+#include <tqpushbutton.h>
+#include <tqstringlist.h>
+#include <tqvaluevector.h>
+#include <tqdom.h>
 
 #include "kmplotio.h"
 #include "kconstanteditor.h"
 
 
-KConstantEditor::KConstantEditor(View *v, QWidget *parent, const char *name)
+KConstantEditor::KConstantEditor(View *v, TQWidget *parent, const char *name)
 	: QConstantEditor(parent,name), m_view(v)
 {
-	QString str_value;
-	QValueVector<Constant>::iterator it;
+	TQString str_value;
+	TQValueVector<Constant>::iterator it;
 	for(it = m_view->parser()->constant.begin(); it!= m_view->parser()->constant.end() ;++it)
 	{
 		str_value.setNum(it->value);
-		(void) new QListViewItem(varlist, QChar(it->constant), str_value);
+		(void) new TQListViewItem(varlist, TQChar(it->constant), str_value);
 	}
 
 }
@@ -61,7 +61,7 @@ void KConstantEditor::cmdNew_clicked()
 {
 	constant = '0';
 	KEditConstant *dlg = new KEditConstant(m_view->parser(), constant, value);
-	connect( dlg, SIGNAL( finished() ), this,SLOT(newConstantSlot() ) ); 
+	connect( dlg, TQT_SIGNAL( finished() ), this,TQT_SLOT(newConstantSlot() ) ); 
 	dlg->show();
 }
 
@@ -73,7 +73,7 @@ void KConstantEditor::cmdEdit_clicked()
 	value = varlist->currentItem()->text(1);
 		
 	KEditConstant *dlg = new KEditConstant(m_view->parser(), constant, value);
-	connect( dlg, SIGNAL( finished() ), this,SLOT(editConstantSlot() ) );
+	connect( dlg, TQT_SIGNAL( finished() ), this,TQT_SLOT(editConstantSlot() ) );
 	dlg->show();
 }
 
@@ -84,9 +84,9 @@ void KConstantEditor::cmdDelete_clicked()
 
 	constant = varlist->currentItem()->text(0).at(0).latin1();
 	value = varlist->currentItem()->text(1);
-	QString str;
+	TQString str;
         
-        for( QValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
+        for( TQValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
 	{
 		str =  it->fstr;
 		for (int i=str.find(')'); (uint)i<str.length();i++)
@@ -96,7 +96,7 @@ void KConstantEditor::cmdDelete_clicked()
                              return;
                         }
 	}
-	QValueVector<Constant>::iterator it;
+	TQValueVector<Constant>::iterator it;
 	for(it = m_view->parser()->constant.begin(); it!= m_view->parser()->constant.end(); ++it)
 	{
 		if ( it->constant == constant)
@@ -113,10 +113,10 @@ void KConstantEditor::cmdDelete_clicked()
 		}
 	}
 	
-	delete varlist->findItem(QChar(constant), 0); //removes the item from the constant list
+	delete varlist->findItem(TQChar(constant), 0); //removes the item from the constant list
 }
 
-void KConstantEditor::varlist_clicked( QListViewItem * item )
+void KConstantEditor::varlist_clicked( TQListViewItem * item )
 {
 	if (item)
 	{
@@ -139,12 +139,12 @@ void KConstantEditor::cmdDuplicate_clicked()
 	constant = varlist->currentItem()->text(0).at(0).latin1();
 	value = varlist->currentItem()->text(1);
 	
-	QStringList list;
+	TQStringList list;
 	bool found;
 	for (char i='A'; i<'Z';i++)
 	{
 		found = false;
-		QValueVector<Constant>::iterator it;
+		TQValueVector<Constant>::iterator it;
 		for(it = m_view->parser()->constant.begin(); it!= m_view->parser()->constant.end() && !found;++it)
 		{
 			if ( it->constant == i || i == constant)
@@ -153,9 +153,9 @@ void KConstantEditor::cmdDuplicate_clicked()
 			}
 		}
 		if (!found)
-			list.append(QChar(i));
+			list.append(TQChar(i));
 	}
-	QStringList result = KInputDialog::getItemList(i18n("Choose Name"),i18n("Choose a name for the constant:"),list, QStringList(), false, &found);
+	TQStringList result = KInputDialog::getItemList(i18n("Choose Name"),i18n("Choose a name for the constant:"),list, TQStringList(), false, &found);
 	if (found)
 	{
 		constant = (*result.begin()).at(0).latin1();
@@ -168,7 +168,7 @@ void KConstantEditor::newConstantSlot()
 {
 	double dvalue = m_view->parser()->eval(value);
 	m_view->parser()->constant.append( Constant(constant, dvalue) );
-	(void) new QListViewItem(varlist, QChar( constant  ), value);
+	(void) new TQListViewItem(varlist, TQChar( constant  ), value);
 	varlist->sort();
 }
 
@@ -176,7 +176,7 @@ void KConstantEditor::editConstantSlot()
 {
 	double dvalue = m_view->parser()->eval(value);
 	bool found = false;
-	QValueVector<Constant>::iterator it;
+	TQValueVector<Constant>::iterator it;
 	for(it = m_view->parser()->constant.begin(); it!= m_view->parser()->constant.end() && !found;++it)
 	{
 		if ( it->constant == constant)
@@ -191,13 +191,13 @@ void KConstantEditor::editConstantSlot()
 		return;
 	}
 
-	QListViewItem *item = varlist->findItem(QChar(constant), 0);
+	TQListViewItem *item = varlist->findItem(TQChar(constant), 0);
 	if (item!=0)
 		item->setText(1,value);
 	
 
         int index = 0;
-        for( QValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
+        for( TQValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
 	{
 		if( it->fstr.contains(constant)!=0 )
 			m_view->parser()->reparse(index); //reparsing the function
@@ -207,7 +207,7 @@ void KConstantEditor::editConstantSlot()
 	m_view->drawPlot();
 }
 
-void KConstantEditor::varlist_doubleClicked( QListViewItem * )
+void KConstantEditor::varlist_doubleClicked( TQListViewItem * )
 {
 	cmdEdit_clicked();
 }
diff --git a/kmplot/kmplot/kconstanteditor.h b/kmplot/kmplot/kconstanteditor.h
index 5f801891..93343ac3 100644
--- a/kmplot/kmplot/kconstanteditor.h
+++ b/kmplot/kmplot/kconstanteditor.h
@@ -38,7 +38,7 @@ class KConstantEditor : public QConstantEditor
 {
 Q_OBJECT
 public:
-    KConstantEditor(View *, QWidget *parent = 0, const char *name = 0);
+    KConstantEditor(View *, TQWidget *parent = 0, const char *name = 0);
     ~KConstantEditor();
     
 public slots:
@@ -49,8 +49,8 @@ public slots:
     void cmdDuplicate_clicked();
     
     ///actions for the visible constant list
-    void varlist_clicked( QListViewItem * item );
-    void varlist_doubleClicked( QListViewItem * );
+    void varlist_clicked( TQListViewItem * item );
+    void varlist_doubleClicked( TQListViewItem * );
    
     /// called when a user pressed OK the the new-constant-dialog
     void newConstantSlot();
@@ -60,7 +60,7 @@ public slots:
     
 private:   
    char constant;
-   QString value;
+   TQString value;
    View *m_view;
     
 };
diff --git a/kmplot/kmplot/keditconstant.cpp b/kmplot/kmplot/keditconstant.cpp
index e7a724ac..4f4ab040 100644
--- a/kmplot/kmplot/keditconstant.cpp
+++ b/kmplot/kmplot/keditconstant.cpp
@@ -27,24 +27,24 @@
 #include <klineedit.h>
 #include <klocale.h>
 #include <kmessagebox.h>
-#include <qpushbutton.h>
+#include <tqpushbutton.h>
 
 
 #include "keditconstant.h"
 
-KEditConstant::KEditConstant(XParser *p, char &c, QString &v, QWidget *parent, const char *name)
+KEditConstant::KEditConstant(XParser *p, char &c, TQString &v, TQWidget *parent, const char *name)
 	: QEditConstant(parent, name,Qt::WDestructiveClose), constant(c), value(v), m_parser(p)
 {
 	if ( constant != '0' )
 	{
 		txtConstant->setEnabled(false);
-		txtConstant->setText(QChar(constant));
+		txtConstant->setText(TQChar(constant));
 		txtValue->setText(value);
 		txtValue->setFocus();
 		txtValue->selectAll();
 	}
-	connect( cmdCancel, SIGNAL( clicked() ), this, SLOT( deleteLater() ));
-	connect( cmdOK, SIGNAL( clicked() ), this, SLOT( cmdOK_clicked() ));
+	connect( cmdCancel, TQT_SIGNAL( clicked() ), this, TQT_SLOT( deleteLater() ));
+	connect( cmdOK, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdOK_clicked() ));
 }
 
 
@@ -67,7 +67,7 @@ void KEditConstant::cmdOK_clicked()
 	if ( txtConstant->isEnabled() ) //creating, not edit a constant
 	{
 		bool found= false;
-		QValueVector<Constant>::iterator it;
+		TQValueVector<Constant>::iterator it;
 		for(it = m_parser->constant.begin(); it!= m_parser->constant.end() && !found;++it)
 		{
 			if ( it->constant == constant)
@@ -88,7 +88,7 @@ void KEditConstant::cmdOK_clicked()
 	}
 	
 	emit finished();
-	QDialog::accept();
+	TQDialog::accept();
 }
 
 void KEditConstant::txtVariable_lostFocus()
diff --git a/kmplot/kmplot/keditconstant.h b/kmplot/kmplot/keditconstant.h
index dcce75cd..e6d19d20 100644
--- a/kmplot/kmplot/keditconstant.h
+++ b/kmplot/kmplot/keditconstant.h
@@ -37,7 +37,7 @@ class KEditConstant : public QEditConstant
 {
 Q_OBJECT
 public:
-    KEditConstant(XParser *p, char &, QString &,QWidget *parent = 0, const char *name = 0);
+    KEditConstant(XParser *p, char &, TQString &,TQWidget *parent = 0, const char *name = 0);
     ~KEditConstant();
    
 public slots:
@@ -50,7 +50,7 @@ signals:
         
 private:
     char &constant;
-    QString &value;
+    TQString &value;
     XParser *m_parser;
     
 
diff --git a/kmplot/kmplot/keditparametric.cpp b/kmplot/kmplot/keditparametric.cpp
index 06b9d359..67ee0421 100644
--- a/kmplot/kmplot/keditparametric.cpp
+++ b/kmplot/kmplot/keditparametric.cpp
@@ -23,7 +23,7 @@
 *
 */
 // Qt includes
-#include <qcheckbox.h>
+#include <tqcheckbox.h>
 
 // KDE includes
 #include <kapplication.h>
@@ -41,11 +41,11 @@
 #include "xparser.h"
 #include "View.h"
 
-KEditParametric::KEditParametric( XParser* parser, QWidget* parent, const char* name ) : 
+KEditParametric::KEditParametric( XParser* parser, TQWidget* parent, const char* name ) : 
 	QEditParametric( parent, name ), m_parser(parser)
 {
-	connect( customMinRange, SIGNAL ( toggled(bool) ), this, SLOT( customMinRange_toggled(bool) ) );
-	connect( customMaxRange, SIGNAL ( toggled(bool) ), this, SLOT( customMaxRange_toggled(bool) ) );
+	connect( customMinRange, TQT_SIGNAL ( toggled(bool) ), this, TQT_SLOT( customMinRange_toggled(bool) ) );
+	connect( customMaxRange, TQT_SIGNAL ( toggled(bool) ), this, TQT_SLOT( customMaxRange_toggled(bool) ) );
 	m_updatedfunction = 0;
 }
 
@@ -74,7 +74,7 @@ void KEditParametric::clearWidgets()
 void KEditParametric::setWidgets()
 {
 	Ufkt *ufkt = &m_parser->ufkt[ m_parser->ixValue(m_x_id) ];
-	QString name, expression;
+	TQString name, expression;
 	splitEquation( ufkt->fstr, name, expression );
 	kLineEditName->setText( name );
 	kLineEditXFunction->setText( expression );
@@ -114,7 +114,7 @@ void KEditParametric::accept()
 	// find a name not already used 
 	if( kLineEditName->text().isEmpty() )
 	{
-		QString fname;
+		TQString fname;
 		m_parser->fixFunctionName(fname, XParser::ParametricX, m_x_id);
 		int const pos = fname.find('(');
 		kLineEditName->setText(fname.mid(1,pos-1));
@@ -178,7 +178,7 @@ void KEditParametric::accept()
                         return;
                 }
                 added_ufkt = &m_parser->ufkt[ix];
-                QString old_fstr = added_ufkt->fstr;
+                TQString old_fstr = added_ufkt->fstr;
                 added_ufkt->fstr = xFunction();
                 m_parser->reparse(added_ufkt); //reparse the funcion
                 if ( m_parser->parserError() != 0)
@@ -237,7 +237,7 @@ void KEditParametric::accept()
         if( m_y_id != -1 )  //when editing a function:
         {
                 added_ufkt = &m_parser->ufkt[m_parser->ixValue(m_y_id)];
-                QString old_fstr = added_ufkt->fstr;
+                TQString old_fstr = added_ufkt->fstr;
                 added_ufkt->fstr = yFunction();
                 m_parser->reparse(added_ufkt); //reparse the funcion
                 if ( m_parser->parserError() != 0) //when something went wrong:
@@ -299,12 +299,12 @@ void KEditParametric::accept()
 	QEditParametric::accept(); //update the function name in FktDlg
 }
     
-QString KEditParametric::xFunction()
+TQString KEditParametric::xFunction()
 {
 	return "x" + kLineEditName->text() + "(t)=" + kLineEditXFunction->text();
 }
 
-void KEditParametric::splitEquation( const QString equation, QString &name, QString &expression )
+void KEditParametric::splitEquation( const TQString equation, TQString &name, TQString &expression )
 {
 	int start = 0;
 	if( equation[ 0 ] == 'x' || equation[ 0 ] == 'y' ) start++;
@@ -314,7 +314,7 @@ void KEditParametric::splitEquation( const QString equation, QString &name, QStr
 	expression = equation.section( '=', 1, 1 );
 }
 
-QString KEditParametric::yFunction()
+TQString KEditParametric::yFunction()
 {
 	return "y" + kLineEditName->text() + "(t)=" + kLineEditYFunction->text();
 }
diff --git a/kmplot/kmplot/keditparametric.h b/kmplot/kmplot/keditparametric.h
index 0ce5b2d4..334d997a 100644
--- a/kmplot/kmplot/keditparametric.h
+++ b/kmplot/kmplot/keditparametric.h
@@ -40,7 +40,7 @@ class KEditParametric : public QEditParametric
 		/// @param parser points to the parser instance.
 		/// @param parent points to the parent widget.
 		/// @param name of this instance.
-		KEditParametric( XParser* parser, QWidget* parent = NULL, const char* name = NULL );
+		KEditParametric( XParser* parser, TQWidget* parent = NULL, const char* name = NULL );
 		/// Nothing special to do.
 		virtual ~KEditParametric() {}
 		
@@ -55,11 +55,11 @@ class KEditParametric : public QEditParametric
 		/// Fill the dialog's widgets with values from the parser
 		void setWidgets();
 		/// Returns the well formed function equation
-		QString xFunction();
+		TQString xFunction();
 		/// Returns the well formed function equation
-		QString yFunction();	
+		TQString yFunction();	
 		/// extract function \a name and \a expression from a given \a equation 
-		void splitEquation( const QString equation, QString &name, QString &expression );
+		void splitEquation( const TQString equation, TQString &name, TQString &expression );
 		/// Pointer to the parser instance.
 		XParser* m_parser;
 		//@{
diff --git a/kmplot/kmplot/keditpolar.cpp b/kmplot/kmplot/keditpolar.cpp
index 7499be1a..787e9e32 100644
--- a/kmplot/kmplot/keditpolar.cpp
+++ b/kmplot/kmplot/keditpolar.cpp
@@ -23,7 +23,7 @@
 *
 */
 // Qt includes
-#include <qcheckbox.h>
+#include <tqcheckbox.h>
 
 // KDE includes
 #include <kapplication.h>
@@ -42,11 +42,11 @@
 #include "xparser.h"
 #include "View.h"
 
-KEditPolar::KEditPolar( XParser* parser, QWidget* parent, const char* name ) : 
+KEditPolar::KEditPolar( XParser* parser, TQWidget* parent, const char* name ) : 
 	QEditPolar( parent, name ),m_parser(parser)
 {
-	connect( customMinRange, SIGNAL ( toggled(bool) ), this, SLOT( customMinRange_toggled(bool) ) );
-	connect( customMaxRange, SIGNAL ( toggled(bool) ), this, SLOT( customMaxRange_toggled(bool) ) );
+	connect( customMinRange, TQT_SIGNAL ( toggled(bool) ), this, TQT_SLOT( customMinRange_toggled(bool) ) );
+	connect( customMaxRange, TQT_SIGNAL ( toggled(bool) ), this, TQT_SLOT( customMaxRange_toggled(bool) ) );
 	m_updatedfunction = 0;
 }
 
@@ -72,7 +72,7 @@ void KEditPolar::clearWidgets()
 void KEditPolar::setWidgets()
 {
         Ufkt *ufkt = &m_parser->ufkt[ m_parser->ixValue(m_id) ];
-	QString function = ufkt->fstr;
+	TQString function = ufkt->fstr;
 	function = function.right( function.length()-1 );
 	kLineEditYFunction->setText( function );
 	checkBoxHide->setChecked( !ufkt->f_mode);
@@ -98,7 +98,7 @@ void KEditPolar::setWidgets()
 
 void KEditPolar::accept()
 {
-	QString f_str = /*"r" + */kLineEditYFunction->text();
+	TQString f_str = /*"r" + */kLineEditYFunction->text();
 
 	if ( m_id!=-1 )
 		m_parser->fixFunctionName(f_str, XParser::Polar, m_id);
@@ -161,7 +161,7 @@ void KEditPolar::accept()
                         return;
                 }
                 added_ufkt =  &m_parser->ufkt[ix];
-                QString const old_fstr = added_ufkt->fstr;
+                TQString const old_fstr = added_ufkt->fstr;
                 added_ufkt->fstr = f_str;
                 m_parser->reparse(added_ufkt); //reparse the funcion
                 if ( m_parser->parserError() != 0)
diff --git a/kmplot/kmplot/keditpolar.h b/kmplot/kmplot/keditpolar.h
index 4189450a..131f2475 100644
--- a/kmplot/kmplot/keditpolar.h
+++ b/kmplot/kmplot/keditpolar.h
@@ -40,7 +40,7 @@ class KEditPolar : public QEditPolar
 		/// @param parser points to the parser instance.
 		/// @param parent points to the parent widget.
 		/// @param name of this instance.
-		KEditPolar( XParser* parser, QWidget* parent = NULL, const char* name = NULL );
+		KEditPolar( XParser* parser, TQWidget* parent = NULL, const char* name = NULL );
 		/// Nothing special to do.
 		virtual ~KEditPolar() {}
 		
diff --git a/kmplot/kmplot/kminmax.cpp b/kmplot/kmplot/kminmax.cpp
index bf4e69a8..3f8db2c8 100644
--- a/kmplot/kmplot/kminmax.cpp
+++ b/kmplot/kmplot/kminmax.cpp
@@ -28,23 +28,23 @@
 #include <klocale.h>
 #include <kmessagebox.h>
 #include <kpushbutton.h>
-#include <qlabel.h>
-#include <qtooltip.h>
-#include <qwhatsthis.h> 
+#include <tqlabel.h>
+#include <tqtooltip.h>
+#include <tqwhatsthis.h> 
 
 
 #include "kminmax.h"
 #include "xparser.h"
 
-KMinMax::KMinMax(View *v, QWidget *parent, const char *name)
+KMinMax::KMinMax(View *v, TQWidget *parent, const char *name)
 	: QMinMax(parent, name), m_view(v)
 {
 	m_mode=-1;
-	connect( cmdClose, SIGNAL( clicked() ), this, SLOT( close() ));
-	connect( cmdFind, SIGNAL( clicked() ), this, SLOT( cmdFind_clicked() ));
-	connect( cmdParameter, SIGNAL( clicked() ), this, SLOT( cmdParameter_clicked() ));
-	connect( list, SIGNAL( highlighted(QListBoxItem*) ), this, SLOT( list_highlighted(QListBoxItem*) ));
-	connect( list, SIGNAL( doubleClicked( QListBoxItem * ) ), this, SLOT( list_doubleClicked(QListBoxItem *) ));
+	connect( cmdClose, TQT_SIGNAL( clicked() ), this, TQT_SLOT( close() ));
+	connect( cmdFind, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdFind_clicked() ));
+	connect( cmdParameter, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdParameter_clicked() ));
+	connect( list, TQT_SIGNAL( highlighted(TQListBoxItem*) ), this, TQT_SLOT( list_highlighted(TQListBoxItem*) ));
+	connect( list, TQT_SIGNAL( doubleClicked( TQListBoxItem * ) ), this, TQT_SLOT( list_doubleClicked(TQListBoxItem *) ));
 	parameter="";
 }
 
@@ -63,7 +63,7 @@ void KMinMax::init(char m)
 	if ( m_mode < 2) //find minimum point
 	{
 		max->setReadOnly(false);
-		QString range;
+		TQString range;
 		range.setNum(View::xmin);
 		min->setText( range);
 		range.setNum(View::xmax);
@@ -71,22 +71,22 @@ void KMinMax::init(char m)
 		lblMin->setText(i18n("Search between the x-value:"));
 		lblMax->setText(i18n("and:"));
 		cmdFind->setText(i18n("&Find"));
-		QToolTip::add(min,i18n("Lower boundary of the plot range"));
-		QWhatsThis::add(min,i18n("Enter the lower boundary of the plot range. Expressions like 2*pi are allowed, too."));
-		QToolTip::add(max,i18n("Upper boundary of the plot range"));
-		QWhatsThis::add(max,i18n("Enter the upper boundary of the plot range. Expressions like 2*pi are allowed, too."));
+		TQToolTip::add(min,i18n("Lower boundary of the plot range"));
+		TQWhatsThis::add(min,i18n("Enter the lower boundary of the plot range. Expressions like 2*pi are allowed, too."));
+		TQToolTip::add(max,i18n("Upper boundary of the plot range"));
+		TQWhatsThis::add(max,i18n("Enter the upper boundary of the plot range. Expressions like 2*pi are allowed, too."));
 		
 		if ( m_mode == 1) //find maximum point
 		{
 			setCaption(i18n("Find Maximum Point"));
-			QToolTip::add( cmdFind, i18n( "Search for the maximum point in the range you specified" ) );
-			QWhatsThis::add(cmdFind,i18n("Search for the highest y-value in the x-range you specified and show the result in a message box."));
+			TQToolTip::add( cmdFind, i18n( "Search for the maximum point in the range you specified" ) );
+			TQWhatsThis::add(cmdFind,i18n("Search for the highest y-value in the x-range you specified and show the result in a message box."));
 		}
 		else
 		{
 			setCaption(i18n("Find Minimum Point"));
-			QToolTip::add( cmdFind, i18n( "Search for the minimum point in the range you specified" ) );
-			QWhatsThis::add(cmdFind,i18n("Search for the lowest y-value in the x-range you specified and show the result in a message box."));
+			TQToolTip::add( cmdFind, i18n( "Search for the minimum point in the range you specified" ) );
+			TQWhatsThis::add(cmdFind,i18n("Search for the lowest y-value in the x-range you specified and show the result in a message box."));
 		}
 	}
 	else if ( m_mode == 2) //get y-value
@@ -97,35 +97,35 @@ void KMinMax::init(char m)
 		max->setReadOnly(true);
 		min->setText("");
 		max->setText("");
-		QToolTip::add(min,i18n("Lower boundary of the plot range"));
-		QWhatsThis::add(min,i18n("Enter the lower boundary of the plot range. Expressions like 2*pi are allowed, too."));
-		QToolTip::add(max,i18n("No returned y-value yet"));
-		QWhatsThis::add(max,i18n("Here you will see the y-value which you got from the x-value in the textbox above. To calculate the y-value, press the Calculate button."));
+		TQToolTip::add(min,i18n("Lower boundary of the plot range"));
+		TQWhatsThis::add(min,i18n("Enter the lower boundary of the plot range. Expressions like 2*pi are allowed, too."));
+		TQToolTip::add(max,i18n("No returned y-value yet"));
+		TQWhatsThis::add(max,i18n("Here you will see the y-value which you got from the x-value in the textbox above. To calculate the y-value, press the Calculate button."));
 		
 		cmdFind->setText(i18n("&Calculate"));
-		QToolTip::add( cmdFind, i18n( "Get the y-value from the x-value you typed" ) );
-		QWhatsThis::add(cmdFind,i18n("Get the y-value from the x-value you typed and show it in the y-value box."));
+		TQToolTip::add( cmdFind, i18n( "Get the y-value from the x-value you typed" ) );
+		TQWhatsThis::add(cmdFind,i18n("Get the y-value from the x-value you typed and show it in the y-value box."));
 
 	}
 	else if ( m_mode == 3) //area under a graph
 	{
 		max->setReadOnly(false);
-		QString range;
+		TQString range;
 		range.setNum(View::xmin);
 		min->setText( range);
 		range.setNum(View::xmax);
 		max->setText(range);
-		QToolTip::add(min,i18n("Lower boundary of the plot range"));
-		QWhatsThis::add(min,i18n("Enter the lower boundary of the plot range. Expressions like 2*pi are allowed, too."));
-		QToolTip::add(max,i18n("Upper boundary of the plot range"));
-		QWhatsThis::add(max,i18n("Enter the upper boundary of the plot range. Expressions like 2*pi are allowed, too."));
+		TQToolTip::add(min,i18n("Lower boundary of the plot range"));
+		TQWhatsThis::add(min,i18n("Enter the lower boundary of the plot range. Expressions like 2*pi are allowed, too."));
+		TQToolTip::add(max,i18n("Upper boundary of the plot range"));
+		TQWhatsThis::add(max,i18n("Enter the upper boundary of the plot range. Expressions like 2*pi are allowed, too."));
 		
 		setCaption(i18n("Calculate Integral"));
 		lblMin->setText(i18n("Calculate the integral between the x-values:"));
 		lblMax->setText(i18n("and:"));
 		cmdFind->setText(i18n("&Calculate"));
-		QToolTip::add( cmdFind, i18n( "Calculate the integral between the x-values" ) );
-		QWhatsThis::add(cmdFind,i18n("Calculate the numeric integral between the x-values and draw the result as an area."));
+		TQToolTip::add( cmdFind, i18n( "Calculate the integral between the x-values" ) );
+		TQWhatsThis::add(cmdFind,i18n("Calculate the numeric integral between the x-values and draw the result as an area."));
 		
 	}
 
@@ -135,10 +135,10 @@ void KMinMax::init(char m)
 
 void KMinMax::updateFunctions()
 {
-	QString const selected_item(list->currentText() );
+	TQString const selected_item(list->currentText() );
 	list->clear();
 
-        for( QValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
+        for( TQValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
 	{
 		if( it->fname[0] != 'x' && it->fname[0] != 'y' && it->fname[0] != 'r' && !it->fname.isEmpty())
 		{
@@ -147,7 +147,7 @@ void KMinMax::updateFunctions()
 
 			if ( it->f1_mode ) //1st derivative
 			{
-				QString function (it->fstr);
+				TQString function (it->fstr);
 				int i= function.find('(');
 				function.truncate(i);
 				function +="\'";
@@ -155,7 +155,7 @@ void KMinMax::updateFunctions()
 			}
 			if ( it->f2_mode )//2nd derivative
 			{
-				QString function (it->fstr);
+				TQString function (it->fstr);
 				int i= function.find('(');
 				function.truncate(i);
 				function +="\'\'";
@@ -163,7 +163,7 @@ void KMinMax::updateFunctions()
 			}
 			if ( it->integral_mode )//integral
 			{
-				QString function (it->fstr);
+				TQString function (it->fstr);
 				int i= function.find('(');
 				function.truncate(i);
 				function = function.upper();
@@ -177,7 +177,7 @@ void KMinMax::updateFunctions()
 	else
 		cmdFind->setEnabled(true);
 	selectItem();
-	QListBoxItem *found_item = list->findItem(selected_item,Qt::ExactMatch);
+	TQListBoxItem *found_item = list->findItem(selected_item,Qt::ExactMatch);
 	if ( found_item && m_view->csmode < 0)
 		list->setSelected(found_item,true);
 }
@@ -189,7 +189,7 @@ void KMinMax::selectItem()
 		return;
 	//kdDebug() << "cstype: " << (int)m_view->cstype << endl;
         Ufkt *ufkt = &m_view->parser()->ufkt[m_view->parser()->ixValue(m_view->csmode)];
-	QString function = ufkt->fstr;
+	TQString function = ufkt->fstr;
 	if ( m_view->cstype == 2)
 	{
 		int i= function.find('(');
@@ -203,7 +203,7 @@ void KMinMax::selectItem()
 		function +="\'";
 	}
 	//kdDebug() << "function: " << function << endl;
-	QListBoxItem *item = list->findItem(function,Qt::ExactMatch);
+	TQListBoxItem *item = list->findItem(function,Qt::ExactMatch);
 	list->setSelected(item,true);
 
 	if (  !ufkt->parameters.isEmpty() )
@@ -256,7 +256,7 @@ void KMinMax::cmdFind_clicked()
 	}
 
 
-	QString function( list->currentText() );
+	TQString function( list->currentText() );
 	char p_mode = 0;
 	if ( function.contains('\'') == 1)
 	{
@@ -270,17 +270,17 @@ void KMinMax::cmdFind_clicked()
 		int pos = function.find('\'');
 		function.remove(pos,2);
 	}
-	else if ( function.at(0).category() == QChar::Letter_Uppercase)
+	else if ( function.at(0).category() == TQChar::Letter_Uppercase)
 	{
 		p_mode = 3;
 		function.at(0) =  function.at(0).lower();
 	}
 
-	QString fname, fstr;
+	TQString fname, fstr;
 	Ufkt *ufkt = 0;
-	QString sec_function = function.section('(',0,0);
+	TQString sec_function = function.section('(',0,0);
 
-        for( QValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
+        for( TQValueVector<Ufkt>::iterator it =  m_view->parser()->ufkt.begin(); it !=  m_view->parser()->ufkt.end(); ++it)
 	{
 		if ( it->fstr.section('(',0,0) == sec_function)
                 {
@@ -321,12 +321,12 @@ void KMinMax::cmdFind_clicked()
 		m_view->getYValue(ufkt,p_mode,dmin,dmax,parameter);
 		if ( !m_view->isCalculationStopped() )
 		{
-			QString tmp;
+			TQString tmp;
 			tmp.setNum(dmax);
 			max->setText(tmp);
 		}
-		QToolTip::add(max,i18n("The returned y-value"));
-		QWhatsThis::add(max,i18n("Here you see the result of the calculation: the returned y-value you got from the x-value in the textbox above"));
+		TQToolTip::add(max,i18n("The returned y-value"));
+		TQWhatsThis::add(max,i18n("Here you see the result of the calculation: the returned y-value you got from the x-value in the textbox above"));
 	}
 	else if ( m_mode == 3)
 	{
@@ -343,14 +343,14 @@ void KMinMax::cmdFind_clicked()
 	if ( m_view->isCalculationStopped() )
 		KMessageBox::error(this,i18n("The operation was cancelled by the user."));
 }
-void KMinMax::list_highlighted(QListBoxItem* item)
+void KMinMax::list_highlighted(TQListBoxItem* item)
 {
 	if ( !item)
 	{
 		cmdParameter->hide();
 		return;
 	}
-	QString function( list->currentText() );
+	TQString function( list->currentText() );
 	char p_mode = 0;
 	if ( function.contains('\'') == 1)
 	{
@@ -364,13 +364,13 @@ void KMinMax::list_highlighted(QListBoxItem* item)
 		int pos = function.find('\'');
 		function.remove(pos,2);
 	}
-	else if ( function.at(0).category() == QChar::Letter_Uppercase)
+	else if ( function.at(0).category() == TQChar::Letter_Uppercase)
 	{
 		p_mode = 3;
 		function.at(0) =  function.at(0).lower();
 	}
-	QString const sec_function = function.section('(',0,0);
-        for(QValueVector<Ufkt>::iterator it = m_view->parser()->ufkt.begin(); it!=m_view->parser()->ufkt.end(); ++it)
+	TQString const sec_function = function.section('(',0,0);
+        for(TQValueVector<Ufkt>::iterator it = m_view->parser()->ufkt.begin(); it!=m_view->parser()->ufkt.end(); ++it)
 	{
                 if ( it->fstr.section('(',0,0) == sec_function)
                 {
@@ -388,7 +388,7 @@ void KMinMax::list_highlighted(QListBoxItem* item)
 }
 void KMinMax::cmdParameter_clicked()
 {
-	QString function( list->currentText() );
+	TQString function( list->currentText() );
 	char p_mode = 0;
 	if ( function.contains('\'') == 1)
 	{
@@ -402,22 +402,22 @@ void KMinMax::cmdParameter_clicked()
 		int pos = function.find('\'');
 		function.remove(pos,2);
 	}
-	else if ( function.at(0).category() == QChar::Letter_Uppercase)
+	else if ( function.at(0).category() == TQChar::Letter_Uppercase)
 	{
 		p_mode = 3;
 		function.at(0) =  function.at(0).lower();
 	}
         
-	QString const sec_function = function.section('(',0,0);
-        for(QValueVector<Ufkt>::iterator it = m_view->parser()->ufkt.begin() ; it!=m_view->parser()->ufkt.end(); ++it)
+	TQString const sec_function = function.section('(',0,0);
+        for(TQValueVector<Ufkt>::iterator it = m_view->parser()->ufkt.begin() ; it!=m_view->parser()->ufkt.end(); ++it)
 	{
 	       if ( it->fstr.section('(',0,0) == sec_function)
                {
-			QStringList str_parameters;
-		        for ( QValueList<ParameterValueItem>::Iterator k = it->parameters.begin(); k != it->parameters.end(); ++k )
+			TQStringList str_parameters;
+		        for ( TQValueList<ParameterValueItem>::Iterator k = it->parameters.begin(); k != it->parameters.end(); ++k )
 			       str_parameters.append( (*k).expression);
                         bool ok;
-                        QStringList result = KInputDialog::getItemList( i18n("Choose Parameter"), i18n("Choose a parameter to use:"), str_parameters, QStringList(parameter),false,&ok,this );
+                        TQStringList result = KInputDialog::getItemList( i18n("Choose Parameter"), i18n("Choose a parameter to use:"), str_parameters, TQStringList(parameter),false,&ok,this );
                         if ( ok)
                                 parameter = result.first();
                         break;
@@ -425,7 +425,7 @@ void KMinMax::cmdParameter_clicked()
 	}
 }
 
-void KMinMax::list_doubleClicked(QListBoxItem *)
+void KMinMax::list_doubleClicked(TQListBoxItem *)
 {
  	if ( list->currentItem() == -1)
  		return;
diff --git a/kmplot/kmplot/kminmax.h b/kmplot/kmplot/kminmax.h
index 3b818758..e564b6f5 100644
--- a/kmplot/kmplot/kminmax.h
+++ b/kmplot/kmplot/kminmax.h
@@ -37,7 +37,7 @@ class KMinMax : public QMinMax
 {
 Q_OBJECT
 public:
-    KMinMax(View *, QWidget *parent = 0, const char *name = 0);
+    KMinMax(View *, TQWidget *parent = 0, const char *name = 0);
     /// called every time the dialog is opened
     void init(char);
     /// update the list with functions
@@ -53,14 +53,14 @@ public slots:
     /// the selecting a function that uses parameter function from a list the user can choose which paramater value he/she wants to use
     void cmdParameter_clicked();
     /// the button for changing the selected parameter value
-    void list_highlighted(QListBoxItem*);
+    void list_highlighted(TQListBoxItem*);
     /// call cmdParameter_clicked() if parameter values is enabled for that function
-    void list_doubleClicked(QListBoxItem *);
+    void list_doubleClicked(TQListBoxItem *);
         
 private:
     View *m_view;
     char m_mode; //< 0 = minimum, 1 = maximum, 2 = y-point, 3=drawing area
-    QString parameter;
+    TQString parameter;
     
 
 };
diff --git a/kmplot/kmplot/kmplot.cpp b/kmplot/kmplot/kmplot.cpp
index 3b0e8b3c..e6f71013 100644
--- a/kmplot/kmplot/kmplot.cpp
+++ b/kmplot/kmplot/kmplot.cpp
@@ -82,7 +82,7 @@ KmPlot::KmPlot( KCmdLineArgs* args)
 	}
 
 	if (!initialGeometrySet())
-		resize( QSize(450, 520).expandedTo(minimumSizeHint()));
+		resize( TQSize(450, 520).expandedTo(minimumSizeHint()));
 
 	// apply the saved mainwindow settings, if any, and ask the mainwindow
 	// to automatically save settings if changed: window size, toolbar
@@ -135,18 +135,18 @@ bool KmPlot::load(const KURL& url)
 
 void KmPlot::setupActions()
 {
-	KStdAction::openNew(this, SLOT(fileNew()), actionCollection());
-	KStdAction::open(this, SLOT(fileOpen()), actionCollection());
-	KStdAction::quit(kapp, SLOT(quit()), actionCollection());
+	KStdAction::openNew(this, TQT_SLOT(fileNew()), actionCollection());
+	KStdAction::open(this, TQT_SLOT(fileOpen()), actionCollection());
+	KStdAction::quit(kapp, TQT_SLOT(quit()), actionCollection());
 
 	createStandardStatusBarAction();
 	setStandardToolBarMenuEnabled(true);
 	
-	KStdAction::keyBindings(this, SLOT(optionsConfigureKeys()), actionCollection());
-	KStdAction::configureToolbars(this, SLOT(optionsConfigureToolbars()), actionCollection());
+	KStdAction::keyBindings(this, TQT_SLOT(optionsConfigureKeys()), actionCollection());
+	KStdAction::configureToolbars(this, TQT_SLOT(optionsConfigureToolbars()), actionCollection());
 
 	m_fullScreen = KStdAction::fullScreen( NULL, NULL, actionCollection(), this, "fullscreen");
-	connect( m_fullScreen, SIGNAL( toggled( bool )), this, SLOT( slotUpdateFullScreen( bool )));
+	connect( m_fullScreen, TQT_SIGNAL( toggled( bool )), this, TQT_SLOT( slotUpdateFullScreen( bool )));
 }
 
 void KmPlot::saveProperties(KConfig* /*config*/)
@@ -210,7 +210,7 @@ void KmPlot::optionsConfigureToolbars()
 	saveMainWindowSettings(KGlobal::config() );
 	// use the standard toolbar editor
 	KEditToolbar dlg(factory());
-	connect(&dlg, SIGNAL(newToolbarConfig()), this, SLOT(applyNewToolbarConfig()));
+	connect(&dlg, TQT_SIGNAL(newToolbarConfig()), this, TQT_SLOT(applyNewToolbarConfig()));
 	dlg.exec();
 }
 
@@ -224,7 +224,7 @@ void KmPlot::fileOpen()
 	// this slot is called whenever the File->Open menu is selected,
 	// the Open shortcut is pressed (usually CTRL+O) or the Open toolbar
 	// button is clicked
-	KURL const url = KFileDialog::getOpenURL( QDir::currentDirPath(),
+	KURL const url = KFileDialog::getOpenURL( TQDir::currentDirPath(),
 	                 i18n( "*.fkt|KmPlot Files (*.fkt)\n*.*|All Files" ), this, i18n( "Open" ) );
 
 	if ( !url.isEmpty())
@@ -263,22 +263,22 @@ void KmPlot::openFileInNewWindow(const KURL url)
 
 bool KmPlot::checkModified()
 {
-	QCString replyType;
-	QByteArray replyData;
-	kapp->dcopClient()->call(kapp->dcopClient()->appId(), "MainDlg","checkModified()", QByteArray(), replyType, replyData, false);
+	TQCString replyType;
+	TQByteArray replyData;
+	kapp->dcopClient()->call(kapp->dcopClient()->appId(), "MainDlg","checkModified()", TQByteArray(), replyType, replyData, false);
 	bool result;
-	QDataStream stream(replyData, IO_ReadOnly);
+	TQDataStream stream(replyData, IO_ReadOnly);
 	stream >> result;
 	return result;
 }
 
 bool KmPlot::isModified()
 {
-	QCString replyType;
-	QByteArray replyData;
-	kapp->dcopClient()->call(kapp->dcopClient()->appId(), "MainDlg","isModified()", QByteArray(), replyType, replyData, false);
+	TQCString replyType;
+	TQByteArray replyData;
+	kapp->dcopClient()->call(kapp->dcopClient()->appId(), "MainDlg","isModified()", TQByteArray(), replyType, replyData, false);
 	bool result;
-	QDataStream stream(replyData, IO_ReadOnly);
+	TQDataStream stream(replyData, IO_ReadOnly);
 	stream >> result;
 	return result;
 }
@@ -288,7 +288,7 @@ bool KmPlot::queryClose()
 	return checkModified();
 }
 
-void KmPlot::setStatusBarText(const QString &text, int id)
+void KmPlot::setStatusBarText(const TQString &text, int id)
 {
 	statusBar()->changeItem(text,id);
 }
@@ -306,13 +306,13 @@ void KmPlot::setupStatusBar()
 
 	m_progressbar = new KmPlotProgress( statusBar() );
 	m_progressbar->setMaximumHeight( statusBar()->height()-10 );
-	connect( m_progressbar->button, SIGNAL (clicked() ), this, SLOT( progressbar_clicked() ) );
+	connect( m_progressbar->button, TQT_SIGNAL (clicked() ), this, TQT_SLOT( progressbar_clicked() ) );
 	statusBar()->addWidget(m_progressbar);
 }
 
 void KmPlot::progressbar_clicked()
 {
-	kapp->dcopClient()->send(kapp->dcopClient()->appId(), "View","stopDrawing()", QByteArray());
+	kapp->dcopClient()->send(kapp->dcopClient()->appId(), "View","stopDrawing()", TQByteArray());
 }
 
 #include "kmplot.moc"
diff --git a/kmplot/kmplot/kmplot.h b/kmplot/kmplot/kmplot.h
index b2cf4242..bb861f49 100644
--- a/kmplot/kmplot/kmplot.h
+++ b/kmplot/kmplot/kmplot.h
@@ -96,7 +96,7 @@ private slots:
 public slots:
 	/// Called when fullscren is enabled/disabled
 	void slotUpdateFullScreen(bool);
-	void setStatusBarText(const QString &, int id);
+	void setStatusBarText(const TQString &, int id);
 
 private:
 	void setupAccel();
diff --git a/kmplot/kmplot/kmplotIface.h b/kmplot/kmplot/kmplotIface.h
index b176b944..b640b5ce 100644
--- a/kmplot/kmplot/kmplotIface.h
+++ b/kmplot/kmplot/kmplotIface.h
@@ -39,7 +39,7 @@ class KmPlotIface : virtual public DCOPObject
 	K_DCOP
 k_dcop:
 	virtual void fileOpen() = 0;
-	virtual void setStatusBarText(const QString &text, int id) = 0;
+	virtual void setStatusBarText(const TQString &text, int id) = 0;
 	virtual void optionsConfigureKeys() = 0;
 	virtual void optionsConfigureToolbars() = 0;
 	virtual void openFileInNewWindow(const KURL url) = 0;
diff --git a/kmplot/kmplot/kmplotio.cpp b/kmplot/kmplot/kmplotio.cpp
index 1af28e25..9a5288a8 100644
--- a/kmplot/kmplot/kmplotio.cpp
+++ b/kmplot/kmplot/kmplotio.cpp
@@ -24,8 +24,8 @@
 */
 
 // Qt includes
-#include <qdom.h>
-#include <qfile.h>
+#include <tqdom.h>
+#include <tqfile.h>
 
 // KDE includes
 #include <kio/netaccess.h>
@@ -54,14 +54,14 @@ KmPlotIO::~KmPlotIO()
 bool KmPlotIO::save( const KURL &url )
 {
 	// saving as xml by a QDomDocument
-	QDomDocument doc( "kmpdoc" );
+	TQDomDocument doc( "kmpdoc" );
 	// the root tag
-	QDomElement root = doc.createElement( "kmpdoc" );
+	TQDomElement root = doc.createElement( "kmpdoc" );
 	root.setAttribute( "version", "2" );
 	doc.appendChild( root );
 
 	// the axes tag
-	QDomElement tag = doc.createElement( "axes" );
+	TQDomElement tag = doc.createElement( "axes" );
 
 	tag.setAttribute( "color", Settings::axesColor().name() );
 	tag.setAttribute( "width", Settings::axesLineWidth() );
@@ -74,14 +74,14 @@ bool KmPlotIO::save( const KURL &url )
 	addTag( doc, tag, "show-frame", Settings::showExtraFrame() ? "1" : "-1" );
 	addTag( doc, tag, "show-extra-frame", Settings::showExtraFrame() ? "1" : "-1" );
 
-	addTag( doc, tag, "xcoord", QString::number( Settings::xRange() ) );
+	addTag( doc, tag, "xcoord", TQString::number( Settings::xRange() ) );
 	if( Settings::xRange() == 4 ) // custom plot range
 	{
 		addTag( doc, tag, "xmin", Settings::xMin() );
 		addTag( doc, tag, "xmax", Settings::xMax() );
 	}
 
-	addTag( doc, tag, "ycoord", QString::number( Settings::yRange() ) );
+	addTag( doc, tag, "ycoord", TQString::number( Settings::yRange() ) );
 	if( Settings::yRange() == 4 ) // custom plot range
 	{
 		addTag( doc, tag, "ymin", Settings::yMin() );
@@ -95,13 +95,13 @@ bool KmPlotIO::save( const KURL &url )
 	tag.setAttribute( "color", Settings::gridColor().name() );
 	tag.setAttribute( "width", Settings::gridLineWidth() );
 
-	addTag( doc, tag, "mode", QString::number( Settings::gridStyle() ) );
+	addTag( doc, tag, "mode", TQString::number( Settings::gridStyle() ) );
 
 	root.appendChild( tag );
 
 	tag = doc.createElement( "scale" );
 
-	QString temp;
+	TQString temp;
 	temp.setNum(Settings::xScaling());
 	addTag( doc, tag, "tic-x", temp );
 	temp.setNum(Settings::yScaling());
@@ -114,7 +114,7 @@ bool KmPlotIO::save( const KURL &url )
 	root.appendChild( tag );
 
 
-	for( QValueVector<Ufkt>::iterator it = m_parser->ufkt.begin(); it != m_parser->ufkt.end(); ++it)
+	for( TQValueVector<Ufkt>::iterator it = m_parser->ufkt.begin(); it != m_parser->ufkt.end(); ++it)
 	{
 		if ( !it->fstr.isEmpty() )
 		{
@@ -122,28 +122,28 @@ bool KmPlotIO::save( const KURL &url )
 
 			//tag.setAttribute( "number", ix );
 			tag.setAttribute( "visible", it->f_mode );
-			tag.setAttribute( "color", QColor( it->color ).name() );
+			tag.setAttribute( "color", TQColor( it->color ).name() );
 			tag.setAttribute( "width", it->linewidth );
 			tag.setAttribute( "use-slider", it->use_slider );
 
 			if ( it->f1_mode)
 			{
 				tag.setAttribute( "visible-deriv", it->f1_mode );
-				tag.setAttribute( "deriv-color", QColor( it->f1_color ).name() );
+				tag.setAttribute( "deriv-color", TQColor( it->f1_color ).name() );
 				tag.setAttribute( "deriv-width", it->f1_linewidth );
 			}
 
 			if ( it->f2_mode)
 			{
 				tag.setAttribute( "visible-2nd-deriv", it->f2_mode );
-				tag.setAttribute( "deriv2nd-color", QColor( it->f2_color ).name() );
+				tag.setAttribute( "deriv2nd-color", TQColor( it->f2_color ).name() );
 				tag.setAttribute( "deriv2nd-width", it->f2_linewidth );
 			}
 
 			if ( it->integral_mode)
 			{
 				tag.setAttribute( "visible-integral", "1" );
-				tag.setAttribute( "integral-color", QColor( it->integral_color ).name() );
+				tag.setAttribute( "integral-color", TQColor( it->integral_color ).name() );
 				tag.setAttribute( "integral-width", it->integral_linewidth );
 				tag.setAttribute( "integral-use-precision", it->integral_use_precision );
 				tag.setAttribute( "integral-precision", it->integral_precision );
@@ -153,8 +153,8 @@ bool KmPlotIO::save( const KURL &url )
 
 			addTag( doc, tag, "equation", it->fstr );
 
-			QStringList str_parameters;
-			for ( QValueList<ParameterValueItem>::Iterator k = it->parameters.begin(); k != it->parameters.end(); ++k )
+			TQStringList str_parameters;
+			for ( TQValueList<ParameterValueItem>::Iterator k = it->parameters.begin(); k != it->parameters.end(); ++k )
 				str_parameters.append( (*k).expression);
 			
 			if( !str_parameters.isEmpty() )
@@ -175,7 +175,7 @@ bool KmPlotIO::save( const KURL &url )
 	addTag( doc, tag, "header-table-font", Settings::headerTableFont() );
 	root.appendChild( tag );
 
-	QFile xmlfile;
+	TQFile xmlfile;
 	if (!url.isLocalFile() )
 	{
 		KTempFile tmpfile;
@@ -185,7 +185,7 @@ bool KmPlotIO::save( const KURL &url )
 			tmpfile.unlink();
 			return false;
 		}
-		QTextStream ts( &xmlfile );
+		TQTextStream ts( &xmlfile );
 		doc.save( ts, 4 );
 		xmlfile.close();
 
@@ -201,7 +201,7 @@ bool KmPlotIO::save( const KURL &url )
 		xmlfile.setName(url.prettyURL(0,KURL::StripFileProtocol)  );
 		if (!xmlfile.open( IO_WriteOnly ) )
 			return false;
-		QTextStream ts( &xmlfile );
+		TQTextStream ts( &xmlfile );
 		doc.save( ts, 4 );
 		xmlfile.close();
 		return true;
@@ -210,18 +210,18 @@ bool KmPlotIO::save( const KURL &url )
 
 }
 
-void KmPlotIO::addTag( QDomDocument &doc, QDomElement &parentTag, const QString tagName, const QString tagValue )
+void KmPlotIO::addTag( TQDomDocument &doc, TQDomElement &parentTag, const TQString tagName, const TQString tagValue )
 {
-	QDomElement tag = doc.createElement( tagName );
-	QDomText value = doc.createTextNode( tagValue );
+	TQDomElement tag = doc.createElement( tagName );
+	TQDomText value = doc.createTextNode( tagValue );
 	tag.appendChild( value );
 	parentTag.appendChild( tag );
 }
 
 bool KmPlotIO::load( const KURL &url )
 {
-	QDomDocument doc( "kmpdoc" );
-	QFile f;
+	TQDomDocument doc( "kmpdoc" );
+	TQFile f;
 	if ( !url.isLocalFile() )
 	{
 		if( !KIO::NetAccess::exists( url, true, 0 ) )
@@ -229,7 +229,7 @@ bool KmPlotIO::load( const KURL &url )
 			KMessageBox::error(0,i18n("The file does not exist."));
 			return false;
 		}
-		QString tmpfile;
+		TQString tmpfile;
 		if( !KIO::NetAccess::download( url, tmpfile, 0 ) )
 		{
 			KMessageBox::error(0,i18n("An error appeared when opening this file"));
@@ -253,12 +253,12 @@ bool KmPlotIO::load( const KURL &url )
 	}
 	f.close();
 
-	QDomElement element = doc.documentElement();
-	QString version = element.attribute( "version" );
+	TQDomElement element = doc.documentElement();
+	TQString version = element.attribute( "version" );
 	if ( version.isNull()) //an old kmplot-file
 	{
 		MainDlg::oldfileversion = true;
-		for ( QDomNode n = element.firstChild(); !n.isNull(); n = n.nextSibling() )
+		for ( TQDomNode n = element.firstChild(); !n.isNull(); n = n.nextSibling() )
 		{
 			if ( n.nodeName() == "axes" )
 				oldParseAxes( n.toElement() );
@@ -273,7 +273,7 @@ bool KmPlotIO::load( const KURL &url )
 	else if (version == "1" || version == "2")
 	{
 		MainDlg::oldfileversion = false;
-		for ( QDomNode n = element.firstChild(); !n.isNull(); n = n.nextSibling() )
+		for ( TQDomNode n = element.firstChild(); !n.isNull(); n = n.nextSibling() )
 		{
 			if ( n.nodeName() == "axes" )
 				parseAxes( n.toElement() );
@@ -293,10 +293,10 @@ bool KmPlotIO::load( const KURL &url )
 	return true;
 }
 
-void KmPlotIO::parseAxes( const QDomElement &n )
+void KmPlotIO::parseAxes( const TQDomElement &n )
 {
 	Settings::setAxesLineWidth( n.attribute( "width", "1" ).toInt() );
-	Settings::setAxesColor( QColor( n.attribute( "color", "#000000" ) ) );
+	Settings::setAxesColor( TQColor( n.attribute( "color", "#000000" ) ) );
 	Settings::setTicWidth( n.attribute( "tic-width", "3" ).toInt() );
 	Settings::setTicLength( n.attribute( "tic-length", "10" ).toInt() );
 
@@ -313,17 +313,17 @@ void KmPlotIO::parseAxes( const QDomElement &n )
 	Settings::setYMax( n.namedItem( "ymax" ).toElement().text() );
 }
 
-void KmPlotIO::parseGrid( const QDomElement & n )
+void KmPlotIO::parseGrid( const TQDomElement & n )
 {
-	Settings::setGridColor( QColor( n.attribute( "color", "#c0c0c0" ) ) );
+	Settings::setGridColor( TQColor( n.attribute( "color", "#c0c0c0" ) ) );
 	Settings::setGridLineWidth( n.attribute( "width", "1" ).toInt() );
 
 	Settings::setGridStyle( n.namedItem( "mode" ).toElement().text().toInt() );
 }
 
-int unit2index( const QString unit )
+int unit2index( const TQString unit )
 {
-	QString units[ 9 ] = { "10", "5", "2", "1", "0.5", "pi/2", "pi/3", "pi/4",i18n("automatic") };
+	TQString units[ 9 ] = { "10", "5", "2", "1", "0.5", "pi/2", "pi/3", "pi/4",i18n("automatic") };
 	int index = 0;
 	while( ( index < 9 ) && ( unit!= units[ index ] ) ) index ++;
 	if( index == 9 ) index = -1;
@@ -331,7 +331,7 @@ int unit2index( const QString unit )
 }
 
 
-void KmPlotIO::parseScale(const QDomElement & n )
+void KmPlotIO::parseScale(const TQDomElement & n )
 {
 	Settings::setXScaling(  n.namedItem( "tic-x" ).toElement().text().toInt()  );
 	Settings::setYScaling(  n.namedItem( "tic-y" ).toElement().text().toInt() );
@@ -339,15 +339,15 @@ void KmPlotIO::parseScale(const QDomElement & n )
 	Settings::setYPrinting(  n.namedItem( "print-tic-y" ).toElement().text().toInt() );
 }
 
-void KmPlotIO::parseFunction( XParser *m_parser, const QDomElement & n )
+void KmPlotIO::parseFunction( XParser *m_parser, const TQDomElement & n )
 {
-	QString temp;
+	TQString temp;
 	Ufkt ufkt;
 	m_parser->prepareAddingFunction(&ufkt);
 	int const next_index=m_parser->getNextIndex()+1;
 
 	ufkt.f_mode = n.attribute( "visible" ).toInt();
-	ufkt.color = QColor( n.attribute( "color" ) ).rgb();
+	ufkt.color = TQColor( n.attribute( "color" ) ).rgb();
 	ufkt.linewidth = n.attribute( "width" ).toInt();
 	ufkt.use_slider = n.attribute( "use-slider" ).toInt();
 
@@ -355,7 +355,7 @@ void KmPlotIO::parseFunction( XParser *m_parser, const QDomElement & n )
 	if (!temp.isNull())
 	{
 		ufkt.f1_mode = temp.toInt();
-		ufkt.f1_color = QColor(n.attribute( "deriv-color" )).rgb();
+		ufkt.f1_color = TQColor(n.attribute( "deriv-color" )).rgb();
 		ufkt.f1_linewidth = n.attribute( "deriv-width" ).toInt();
 	}
 	else
@@ -369,7 +369,7 @@ void KmPlotIO::parseFunction( XParser *m_parser, const QDomElement & n )
 	if (!temp.isNull())
 	{
 		ufkt.f2_mode = temp.toInt();
-		ufkt.f2_color = QColor(n.attribute( "deriv2nd-color" )).rgb();
+		ufkt.f2_color = TQColor(n.attribute( "deriv2nd-color" )).rgb();
 		ufkt.f2_linewidth = n.attribute( "deriv2nd-width" ).toInt();
 	}
 	else
@@ -383,7 +383,7 @@ void KmPlotIO::parseFunction( XParser *m_parser, const QDomElement & n )
 	if (!temp.isNull())
 	{
 		ufkt.integral_mode = temp.toInt();
-		ufkt.integral_color = QColor(n.attribute( "integral-color" )).rgb();
+		ufkt.integral_color = TQColor(n.attribute( "integral-color" )).rgb();
 		ufkt.integral_linewidth = n.attribute( "integral-width" ).toInt();
 		ufkt.integral_use_precision = n.attribute( "integral-use-precision" ).toInt();
 		ufkt.integral_precision = n.attribute( "integral-precision" ).toInt();
@@ -432,11 +432,11 @@ void KmPlotIO::parseFunction( XParser *m_parser, const QDomElement & n )
 	else
 		parseParameters( m_parser, n, ufkt );
 
-	QString fstr = ufkt.fstr;
+	TQString fstr = ufkt.fstr;
 	if ( !fstr.isEmpty() )
 	{
 		int const i = fstr.find( ';' );
-		QString str;
+		TQString str;
 		if ( i == -1 )
 			str = fstr;
 		else
@@ -473,27 +473,27 @@ void KmPlotIO::parseFunction( XParser *m_parser, const QDomElement & n )
 	}
 }
 
-void KmPlotIO::parseParameters( XParser *m_parser, const QDomElement &n, Ufkt &ufkt  )
+void KmPlotIO::parseParameters( XParser *m_parser, const TQDomElement &n, Ufkt &ufkt  )
 {
-	QStringList str_parameters;
-	for ( QValueList<ParameterValueItem>::Iterator it = ufkt.parameters.begin(); it != ufkt.parameters.end(); ++it )
+	TQStringList str_parameters;
+	for ( TQValueList<ParameterValueItem>::Iterator it = ufkt.parameters.begin(); it != ufkt.parameters.end(); ++it )
 		str_parameters.append( (*it).expression);
-	str_parameters = QStringList::split( ";", n.namedItem( "parameterlist" ).toElement().text() );
-	for( QStringList::Iterator it = str_parameters.begin(); it != str_parameters.end(); ++it )
+	str_parameters = TQStringList::split( ";", n.namedItem( "parameterlist" ).toElement().text() );
+	for( TQStringList::Iterator it = str_parameters.begin(); it != str_parameters.end(); ++it )
 		ufkt.parameters.append( ParameterValueItem( *it, m_parser->eval( *it ) ));
 }
 
-void KmPlotIO::parseThreeDotThreeParameters( XParser *m_parser, const QDomElement &n, Ufkt &ufkt  )
+void KmPlotIO::parseThreeDotThreeParameters( XParser *m_parser, const TQDomElement &n, Ufkt &ufkt  )
 {
-	QStringList str_parameters;
-	for ( QValueList<ParameterValueItem>::Iterator it = ufkt.parameters.begin(); it != ufkt.parameters.end(); ++it )
+	TQStringList str_parameters;
+	for ( TQValueList<ParameterValueItem>::Iterator it = ufkt.parameters.begin(); it != ufkt.parameters.end(); ++it )
 		str_parameters.append( (*it).expression);
-	str_parameters = QStringList::split( ",", n.namedItem( "parameterlist" ).toElement().text() );
-	for( QStringList::Iterator it = str_parameters.begin(); it != str_parameters.end(); ++it )
+	str_parameters = TQStringList::split( ",", n.namedItem( "parameterlist" ).toElement().text() );
+	for( TQStringList::Iterator it = str_parameters.begin(); it != str_parameters.end(); ++it )
 		ufkt.parameters.append( ParameterValueItem( *it, m_parser->eval( *it ) ));
 }
 
-void KmPlotIO::oldParseFunction(  XParser *m_parser, const QDomElement & n )
+void KmPlotIO::oldParseFunction(  XParser *m_parser, const TQDomElement & n )
 {
 	kdDebug() << "parsing old function" << endl;
 	Ufkt ufkt;
@@ -505,7 +505,7 @@ void KmPlotIO::oldParseFunction(  XParser *m_parser, const QDomElement & n )
 	ufkt.f2_mode = 0;
 	ufkt.linewidth = n.attribute( "width" ).toInt();
 	ufkt.use_slider = -1;
-	ufkt.color = ufkt.f1_color = ufkt.f2_color = ufkt.integral_color = QColor( n.attribute( "color" ) ).rgb();
+	ufkt.color = ufkt.f1_color = ufkt.f2_color = ufkt.integral_color = TQColor( n.attribute( "color" ) ).rgb();
 
 	ufkt.str_dmin = n.namedItem( "arg-min" ).toElement().text();
 	if( ufkt.str_dmin.isEmpty() )
@@ -529,7 +529,7 @@ void KmPlotIO::oldParseFunction(  XParser *m_parser, const QDomElement & n )
 	  ufkt.usecustomxmax = false;
 	}
 	
-	const QString tmp_fstr = n.namedItem( "equation" ).toElement().text();
+	const TQString tmp_fstr = n.namedItem( "equation" ).toElement().text();
 	const int pos = tmp_fstr.find(';');
 	if ( pos == -1 )
 	  ufkt.fstr = tmp_fstr;
@@ -543,11 +543,11 @@ void KmPlotIO::oldParseFunction(  XParser *m_parser, const QDomElement & n )
 	  }
 	}
 
-	QString fstr = ufkt.fstr;
+	TQString fstr = ufkt.fstr;
 	if ( !fstr.isEmpty() )
 	{
 		int const i = fstr.find( ';' );
-		QString str;
+		TQString str;
 		if ( i == -1 )
 			str = fstr;
 		else
@@ -584,10 +584,10 @@ void KmPlotIO::oldParseFunction(  XParser *m_parser, const QDomElement & n )
 	}
 }
 
-void KmPlotIO::oldParseAxes( const QDomElement &n )
+void KmPlotIO::oldParseAxes( const TQDomElement &n )
 {
 	Settings::setAxesLineWidth( n.attribute( "width", "1" ).toInt() );
-	Settings::setAxesColor( QColor( n.attribute( "color", "#000000" ) ) );
+	Settings::setAxesColor( TQColor( n.attribute( "color", "#000000" ) ) );
 	Settings::setTicWidth( n.attribute( "tic-width", "3" ).toInt() );
 	Settings::setTicLength( n.attribute( "tic-length", "10" ).toInt() );
 
@@ -604,7 +604,7 @@ void KmPlotIO::oldParseAxes( const QDomElement &n )
 	Settings::setYMax( n.namedItem( "ymax" ).toElement().text() );
 }
 
-void KmPlotIO::oldParseScale( const QDomElement & n )
+void KmPlotIO::oldParseScale( const TQDomElement & n )
 {
 	Settings::setXScaling( unit2index( n.namedItem( "tic-x" ).toElement().text() ) );
 	Settings::setYScaling( unit2index( n.namedItem( "tic-y" ).toElement().text() ) );
diff --git a/kmplot/kmplot/kmplotio.h b/kmplot/kmplot/kmplotio.h
index 837cf4ec..8fac662e 100644
--- a/kmplot/kmplot/kmplotio.h
+++ b/kmplot/kmplot/kmplotio.h
@@ -64,36 +64,36 @@ class KmPlotIO
 		 * @param tagName The Name of the tag.
 		 * @param tagValue The data between the opening and cloding tag.
 		 */
-		void addTag( QDomDocument &doc, QDomElement &parentTag, const QString tagName, const QString tagValue );
+		void addTag( TQDomDocument &doc, TQDomElement &parentTag, const TQString tagName, const TQString tagValue );
 		/// Reads axes parameters from the node @a n.
 		/// @param n Node containing the options.
-		void parseAxes( const QDomElement &n );
+		void parseAxes( const TQDomElement &n );
 		/// Reads grid parameters from the node @a n.
 		/// @param n Node containing the options.
-		void parseGrid( const QDomElement &n );
+		void parseGrid( const TQDomElement &n );
 		/// Reads scale parameters from the node @a n.
 		/// @param n Node containing the options.
-		void parseScale( const QDomElement &n );
+		void parseScale( const TQDomElement &n );
 		/// Reads function parameters from the node @a n.
 		/// @param parser points to the parser instance.
 		/// @param n Node containing the options.
-		void parseFunction( XParser *parser, const QDomElement &n );
+		void parseFunction( XParser *parser, const TQDomElement &n );
 		/// Reads parameter values for a function from the node @a n.
 		/// @param parser points to the parser instance.
 		/// @param n Node containing the options.
 		/// @param ix Function index in the parser instance
-		void parseParameters( XParser *parser, const QDomElement &n, Ufkt &ufkt);
+		void parseParameters( XParser *parser, const TQDomElement &n, Ufkt &ufkt);
 		
 		/// For KDE 3.3
-		void parseThreeDotThreeParameters( XParser *parser, const QDomElement &n, Ufkt &ufkt);
+		void parseThreeDotThreeParameters( XParser *parser, const TQDomElement &n, Ufkt &ufkt);
 		
                 ///For KDE <3.3
                 /// This is the same as parseScale but is made for old Kmplot-files
-                void oldParseScale( const QDomElement & n );
+                void oldParseScale( const TQDomElement & n );
                 /// This is the same as parseFunction but is made for old Kmplot-files
-                void oldParseFunction( XParser *parser, const QDomElement &n );
+                void oldParseFunction( XParser *parser, const TQDomElement &n );
                 /// This is the same as parseAxes but is made for old Kmplot-files
-                void oldParseAxes( const QDomElement &n );
+                void oldParseAxes( const TQDomElement &n );
                 
                 XParser *m_parser;
                 
diff --git a/kmplot/kmplot/kmplotprogress.cpp b/kmplot/kmplot/kmplotprogress.cpp
index 721480e0..c470c8ba 100644
--- a/kmplot/kmplot/kmplotprogress.cpp
+++ b/kmplot/kmplot/kmplotprogress.cpp
@@ -29,15 +29,15 @@
 #include "kmplotprogress.h"
 //#include "kmplotprogress.moc.cpp"
 
-KmPlotProgress::KmPlotProgress( QWidget* parent, const char* name ) : QWidget( parent, name) 
+KmPlotProgress::KmPlotProgress( TQWidget* parent, const char* name ) : TQWidget( parent, name) 
 {
  button = new KPushButton(this);
  button->setPixmap( SmallIcon( "cancel" ) );
- button->setGeometry( QRect( 0, 0, 30, 23 ) );
+ button->setGeometry( TQRect( 0, 0, 30, 23 ) );
  button->setMaximumHeight(height()-10);
  
  progress = new KProgress(this);
- progress->setGeometry( QRect( 30, 0, 124, 23 ) );
+ progress->setGeometry( TQRect( 30, 0, 124, 23 ) );
  progress->setMaximumHeight(height()-10);
  
  hide();
diff --git a/kmplot/kmplot/kmplotprogress.h b/kmplot/kmplot/kmplotprogress.h
index dc7bb166..c4a039f9 100644
--- a/kmplot/kmplot/kmplotprogress.h
+++ b/kmplot/kmplot/kmplotprogress.h
@@ -27,14 +27,14 @@
 
 #include <kprogress.h>
 #include <kpushbutton.h>
-#include <qwidget.h>
+#include <tqwidget.h>
 
 /// The progress-widget in the statusbar which appears when drawing integrals
 class KmPlotProgress: public QWidget
 {
 	Q_OBJECT
 public:
-	KmPlotProgress( QWidget* parent = 0, const char* name = 0 );
+	KmPlotProgress( TQWidget* parent = 0, const char* name = 0 );
 	~KmPlotProgress();
 	void increase();
 
diff --git a/kmplot/kmplot/kparametereditor.cpp b/kmplot/kmplot/kparametereditor.cpp
index 95b4a0c5..325241e9 100644
--- a/kmplot/kmplot/kparametereditor.cpp
+++ b/kmplot/kmplot/kparametereditor.cpp
@@ -34,36 +34,36 @@
 #include <kpushbutton.h>
 #include <ktempfile.h>
 #include <kurl.h>
-#include <qfile.h>
-#include <qtextstream.h>
-#include <qvaluelist.h>
+#include <tqfile.h>
+#include <tqtextstream.h>
+#include <tqvaluelist.h>
 
 #include "kparametereditor.h"
 
 class ParameterValueList;
 
-KParameterEditor::KParameterEditor(XParser *m, QValueList<ParameterValueItem> *l, QWidget *parent, const char *name)
+KParameterEditor::KParameterEditor(XParser *m, TQValueList<ParameterValueItem> *l, TQWidget *parent, const char *name)
 	: QParameterEditor(parent,name, true, Qt::WDestructiveClose), m_parameter(l), m_parser(m)
 {
-	for (  QValueList<ParameterValueItem>::Iterator it = m_parameter->begin(); it != m_parameter->end(); ++it )
+	for (  TQValueList<ParameterValueItem>::Iterator it = m_parameter->begin(); it != m_parameter->end(); ++it )
 		list->insertItem( (*it).expression );
 	list->sort();
 	
-	connect( cmdNew, SIGNAL( clicked() ), this, SLOT( cmdNew_clicked() ));
-	connect( cmdEdit, SIGNAL( clicked() ), this, SLOT( cmdEdit_clicked() ));
-	connect( cmdDelete, SIGNAL( clicked() ), this, SLOT( cmdDelete_clicked() ));
-	connect( cmdImport, SIGNAL( clicked() ), this, SLOT( cmdImport_clicked() ));
-	connect( cmdExport, SIGNAL( clicked() ), this, SLOT( cmdExport_clicked() ));
-	connect( cmdClose, SIGNAL( clicked() ), this, SLOT( close() ));
-	connect( list, SIGNAL( doubleClicked( QListBoxItem * ) ), this, SLOT( varlist_doubleClicked( QListBoxItem *) ));
-	connect( list, SIGNAL( clicked ( QListBoxItem * ) ), this, SLOT( varlist_clicked(QListBoxItem *  ) ));
+	connect( cmdNew, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdNew_clicked() ));
+	connect( cmdEdit, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdEdit_clicked() ));
+	connect( cmdDelete, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdDelete_clicked() ));
+	connect( cmdImport, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdImport_clicked() ));
+	connect( cmdExport, TQT_SIGNAL( clicked() ), this, TQT_SLOT( cmdExport_clicked() ));
+	connect( cmdClose, TQT_SIGNAL( clicked() ), this, TQT_SLOT( close() ));
+	connect( list, TQT_SIGNAL( doubleClicked( TQListBoxItem * ) ), this, TQT_SLOT( varlist_doubleClicked( TQListBoxItem *) ));
+	connect( list, TQT_SIGNAL( clicked ( TQListBoxItem * ) ), this, TQT_SLOT( varlist_clicked(TQListBoxItem *  ) ));
 	
 }
 
 KParameterEditor::~KParameterEditor()
 {
 	m_parameter->clear();
-	QString item_text;
+	TQString item_text;
 	for (int i = 0; (uint)i <= list->count();i++)
 	{
 		item_text = list->text(i);
@@ -74,7 +74,7 @@ KParameterEditor::~KParameterEditor()
 
 void KParameterEditor::cmdNew_clicked()
 {
-	QString result="";
+	TQString result="";
 	while (1)
 	{
 		bool ok;
@@ -100,7 +100,7 @@ void KParameterEditor::cmdNew_clicked()
 
 void KParameterEditor::cmdEdit_clicked()
 {
-	QString result=list->currentText();
+	TQString result=list->currentText();
 	while (1)
 	{
 		bool ok;
@@ -134,7 +134,7 @@ void KParameterEditor::cmdDelete_clicked()
 
 void KParameterEditor::cmdImport_clicked()
 {
-	KURL url = KFileDialog::getOpenURL( QString::null,i18n("*.txt|Plain Text File "));
+	KURL url = KFileDialog::getOpenURL( TQString::null,i18n("*.txt|Plain Text File "));
 	if ( url.isEmpty() )
 		return;
         
@@ -145,8 +145,8 @@ void KParameterEditor::cmdImport_clicked()
         }
         
 	bool verbose = false;
-        QFile file;
-        QString tmpfile;
+        TQFile file;
+        TQString tmpfile;
         if ( !url.isLocalFile() )
         {
                 if ( !KIO::NetAccess::download(url, tmpfile, this) )
@@ -161,8 +161,8 @@ void KParameterEditor::cmdImport_clicked()
 	
 	if ( file.open(IO_ReadOnly) )
 	{
-		QTextStream stream(&file);
-		QString line;
+		TQTextStream stream(&file);
+		TQString line;
 		for( int i=1; !stream.atEnd();i++ )
 		{
 			line = stream.readLine();
@@ -185,7 +185,7 @@ void KParameterEditor::cmdImport_clicked()
                                         KIO::NetAccess::removeTempFile( tmpfile );
 					return;
 				}
-				else if (KMessageBox::warningYesNo(this,i18n("Would you like to be informed about other lines that cannot be read?"), QString::null, i18n("Get Informed"), i18n("Ignore Information") ) == KMessageBox::No)
+				else if (KMessageBox::warningYesNo(this,i18n("Would you like to be informed about other lines that cannot be read?"), TQString::null, i18n("Get Informed"), i18n("Ignore Information") ) == KMessageBox::No)
 					verbose = true;
 			}
 		}
@@ -202,14 +202,14 @@ void KParameterEditor::cmdExport_clicked()
 {
         if ( !list->count() )
                 return;
-        KURL url = KFileDialog::getSaveURL( QString::null,i18n("*.txt|Plain Text File "));
+        KURL url = KFileDialog::getSaveURL( TQString::null,i18n("*.txt|Plain Text File "));
         if ( url.isEmpty() )
                 return;
 
         if( !KIO::NetAccess::exists( url,false,this ) || KMessageBox::warningContinueCancel( this, i18n( "A file named \"%1\" already exists. Are you sure you want to continue and overwrite this file?" ).arg( url.url()), i18n( "Overwrite File?" ), KGuiItem( i18n( "&Overwrite" ) ) ) == KMessageBox::Continue )
         {
-                QString tmpfile;
-                QFile file;
+                TQString tmpfile;
+                TQFile file;
                 if ( !url.isLocalFile() )
                 {
                         KTempFile tmpfile;
@@ -217,8 +217,8 @@ void KParameterEditor::cmdExport_clicked()
                         
                         if (file.open( IO_WriteOnly ) )
                         {
-                                QTextStream stream(&file);
-                                QListBoxItem *it = list->firstItem();
+                                TQTextStream stream(&file);
+                                TQListBoxItem *it = list->firstItem();
                                 while ( 1 )
                                 {
                                         stream << it->text();
@@ -246,8 +246,8 @@ void KParameterEditor::cmdExport_clicked()
                         file.setName(url.prettyURL(0,KURL::StripFileProtocol));
                         if (file.open( IO_WriteOnly ) )
                         {
-                                QTextStream stream(&file);
-                                QListBoxItem *it = list->firstItem();
+                                TQTextStream stream(&file);
+                                TQListBoxItem *it = list->firstItem();
                                 while ( 1 )
                                 {
                                         stream << it->text();
@@ -267,7 +267,7 @@ void KParameterEditor::cmdExport_clicked()
 
 }
 
-void KParameterEditor::varlist_clicked( QListBoxItem * item )
+void KParameterEditor::varlist_clicked( TQListBoxItem * item )
 {
 	if (item)
 	{
@@ -282,12 +282,12 @@ void KParameterEditor::varlist_clicked( QListBoxItem * item )
 }
 
 
-void KParameterEditor::varlist_doubleClicked( QListBoxItem * )
+void KParameterEditor::varlist_doubleClicked( TQListBoxItem * )
 {
 	cmdEdit_clicked();
 }
 
-bool KParameterEditor::checkTwoOfIt(const QString & text)
+bool KParameterEditor::checkTwoOfIt(const TQString & text)
 {
 	if ( list->findItem(text,Qt::ExactMatch) == 0)
 		return false;
diff --git a/kmplot/kmplot/kparametereditor.h b/kmplot/kmplot/kparametereditor.h
index 223ce5b8..7c1d742d 100644
--- a/kmplot/kmplot/kparametereditor.h
+++ b/kmplot/kmplot/kparametereditor.h
@@ -39,7 +39,7 @@ class KParameterEditor : public QParameterEditor
 {
 Q_OBJECT
 public:
-    KParameterEditor(XParser *, QValueList<ParameterValueItem> *, QWidget *parent = 0, const char *name = 0);
+    KParameterEditor(XParser *, TQValueList<ParameterValueItem> *, TQWidget *parent = 0, const char *name = 0);
     ~KParameterEditor();
     
 public slots:
@@ -48,14 +48,14 @@ public slots:
     void cmdDelete_clicked();
     void cmdImport_clicked();
     void cmdExport_clicked();
-    void varlist_clicked( QListBoxItem *  );
-    void varlist_doubleClicked( QListBoxItem * );
+    void varlist_clicked( TQListBoxItem *  );
+    void varlist_doubleClicked( TQListBoxItem * );
   
     
 private:
     /// Check so that it doesn't exist two equal values
-    bool checkTwoOfIt( const QString & text);
-    QValueList<ParameterValueItem> *m_parameter;
+    bool checkTwoOfIt( const TQString & text);
+    TQValueList<ParameterValueItem> *m_parameter;
     XParser *m_parser;
 };
 
diff --git a/kmplot/kmplot/kprinterdlg.cpp b/kmplot/kmplot/kprinterdlg.cpp
index f17308e0..aa74a7b5 100644
--- a/kmplot/kmplot/kprinterdlg.cpp
+++ b/kmplot/kmplot/kprinterdlg.cpp
@@ -24,7 +24,7 @@
 */
 
 // Qt includes
-#include <qlayout.h>
+#include <tqlayout.h>
 
 // KDE includes
 #include <kdialog.h>
@@ -33,23 +33,23 @@
 // local includes
 #include "kprinterdlg.h"
 
-KPrinterDlg::KPrinterDlg( QWidget *parent, const char *name )
+KPrinterDlg::KPrinterDlg( TQWidget *parent, const char *name )
 		: KPrintDialogPage( parent, name )
 {
 	setTitle( i18n( "KmPlot Options" ) );
-	QVBoxLayout *layout = new QVBoxLayout( this );
+	TQVBoxLayout *layout = new TQVBoxLayout( this );
 	layout->setMargin( KDialog::marginHint() );
 	layout->setSpacing( KDialog::spacingHint() );
 
 
-	printHeaderTable = new QCheckBox( i18n( "Print header table" ), this );
-	transparent_background = new QCheckBox( i18n( "Transparent background" ), this );
+	printHeaderTable = new TQCheckBox( i18n( "Print header table" ), this );
+	transparent_background = new TQCheckBox( i18n( "Transparent background" ), this );
 	layout->addWidget( printHeaderTable );
 	layout->addWidget( transparent_background );
 	layout->addStretch( 1 );
 }
 
-void KPrinterDlg::getOptions( QMap<QString, QString>& opts, bool include_def )
+void KPrinterDlg::getOptions( TQMap<TQString, TQString>& opts, bool include_def )
 {
  	if ( include_def || !printHeaderTable->isChecked() )
  		opts[ "app-kmplot-printtable" ] = ( printHeaderTable->isChecked() ? "1" : "-1" );
@@ -57,13 +57,13 @@ void KPrinterDlg::getOptions( QMap<QString, QString>& opts, bool include_def )
 		opts[ "app-kmplot-printbackground" ] = ( transparent_background->isChecked() ? "1" : "-1" );
 }
 
-void KPrinterDlg::setOptions( const QMap<QString, QString>& opts )
+void KPrinterDlg::setOptions( const TQMap<TQString, TQString>& opts )
 {
 	printHeaderTable->setChecked( opts[ "app-kmplot-printtable" ] != "-1" );
 	transparent_background->setChecked( opts[ "app-kmplot-printbackground" ] != "-1" );
 }
 
-bool KPrinterDlg::isValid( const QString& )
+bool KPrinterDlg::isValid( const TQString& )
 {
 	return true;
 }
diff --git a/kmplot/kmplot/kprinterdlg.h b/kmplot/kmplot/kprinterdlg.h
index e875ee7a..46113efb 100644
--- a/kmplot/kmplot/kprinterdlg.h
+++ b/kmplot/kmplot/kprinterdlg.h
@@ -29,7 +29,7 @@
 #define kprintdlg_included
 
 // Qt includes
-#include <qcheckbox.h>
+#include <tqcheckbox.h>
 
 // KDE includes
 #include <kdeprint/kprintdialogpage.h>
@@ -44,17 +44,17 @@ class KPrinterDlg : public KPrintDialogPage
 	Q_OBJECT
 public:
 	/// Getting the common arguments.
-	KPrinterDlg( QWidget *parent = 0, const char *name = 0 );
+	KPrinterDlg( TQWidget *parent = 0, const char *name = 0 );
 
 	/// Reimplemented.
-	void getOptions( QMap<QString, QString>& opts, bool include_def = false );
+	void getOptions( TQMap<TQString, TQString>& opts, bool include_def = false );
 	/// Reimplemented.
-	void setOptions( const QMap<QString, QString>& opts );
+	void setOptions( const TQMap<TQString, TQString>& opts );
 	/// Reimplemented.
-	bool isValid( const QString& msg );
+	bool isValid( const TQString& msg );
 	/// The check box for the option.
-	QCheckBox *printHeaderTable;
-	QCheckBox *transparent_background;
+	TQCheckBox *printHeaderTable;
+	TQCheckBox *transparent_background;
 };
 
 #endif //kprinterdlg_included
diff --git a/kmplot/kmplot/ksliderwindow.cpp b/kmplot/kmplot/ksliderwindow.cpp
index 675cb9d9..24c71994 100644
--- a/kmplot/kmplot/ksliderwindow.cpp
+++ b/kmplot/kmplot/ksliderwindow.cpp
@@ -23,10 +23,10 @@
 *
 */
 // Qt includes
-#include <qcursor.h>
-#include <qslider.h>
-#include <qtooltip.h>
-#include <qwhatsthis.h>
+#include <tqcursor.h>
+#include <tqslider.h>
+#include <tqtooltip.h>
+#include <tqwhatsthis.h>
 
 // KDE includes
 #include <kaction.h>
@@ -42,16 +42,16 @@
 // local includes
 #include "ksliderwindow.h"
 
-KSliderWindow::KSliderWindow(QWidget* parent, int num ) :
+KSliderWindow::KSliderWindow(TQWidget* parent, int num ) :
 	SliderWindow( parent, "", false, Qt::WStyle_Tool-Qt::WStyle_Maximize ), m_num(num)
 {
 	setCaption(i18n( "Slider %1" ).arg( num+1 ) );
-	QToolTip::add( slider, i18n( "Slider no. %1" ).arg( num+1 ));
-	QWhatsThis::add( this, i18n( "Move slider to change the parameter of the function plot connected to this slider." ) );
+	TQToolTip::add( slider, i18n( "Slider no. %1" ).arg( num+1 ));
+	TQWhatsThis::add( this, i18n( "Move slider to change the parameter of the function plot connected to this slider." ) );
 	
 	// load the min and max value + the current value
 	KConfig config( "kmplotrc" );
-	config.setGroup( "slider" + QString::number(num) );
+	config.setGroup( "slider" + TQString::number(num) );
 	slider->setMinValue( config.readNumEntry( "min", 0) );
 	slider->setMaxValue( config.readNumEntry( "max", 100) );
 	slider->setValue( config.readNumEntry( "value", 50) );
@@ -61,9 +61,9 @@ KSliderWindow::KSliderWindow(QWidget* parent, int num ) :
 	installEventFilter(this);
 	
 	m_popupmenu = new KPopupMenu(this);
-	KAction *mnuMinValue = new KAction(i18n("&Change Minimum Value") ,0,this, SLOT( mnuMinValue_clicked() ),0);
+	KAction *mnuMinValue = new KAction(i18n("&Change Minimum Value") ,0,this, TQT_SLOT( mnuMinValue_clicked() ),0);
 	mnuMinValue->plug(m_popupmenu);
-	KAction *mnuMaxValue = new KAction(i18n("&Change Maximum Value") ,0,this, SLOT( mnuMaxValue_clicked() ),0 );
+	KAction *mnuMaxValue = new KAction(i18n("&Change Maximum Value") ,0,this, TQT_SLOT( mnuMaxValue_clicked() ),0 );
 	mnuMaxValue->plug(m_popupmenu);
 }
 
@@ -71,26 +71,26 @@ KSliderWindow::~KSliderWindow()
 {
 	// save the min and max value + the current value
 	KConfig config( "kmplotrc" );
-	config.setGroup( "slider" + QString::number(m_num) );
+	config.setGroup( "slider" + TQString::number(m_num) );
 	config.writeEntry( "min", slider->minValue() );
 	config.writeEntry( "max", slider->maxValue() );
 	config.writeEntry( "value", slider->value() );
 }
 
-bool KSliderWindow::eventFilter( QObject *obj, QEvent *ev )
+bool KSliderWindow::eventFilter( TQObject *obj, TQEvent *ev )
 {
-	if (ev->type() == QEvent::MouseButtonPress)
+	if (ev->type() == TQEvent::MouseButtonPress)
 	{
-		QMouseEvent *e = (QMouseEvent *)ev;
+		TQMouseEvent *e = (TQMouseEvent *)ev;
  		if (e->button() != Qt::RightButton)
 			return SliderWindow::eventFilter( obj, ev );
-		m_popupmenu->exec(QCursor::pos());
+		m_popupmenu->exec(TQCursor::pos());
 		return true;
 	}
 	return SliderWindow::eventFilter( obj, ev );
 }
 
-void KSliderWindow::closeEvent( QCloseEvent * e)
+void KSliderWindow::closeEvent( TQCloseEvent * e)
 {
 	emit windowClosed(m_num);
 	e->accept();
diff --git a/kmplot/kmplot/ksliderwindow.h b/kmplot/kmplot/ksliderwindow.h
index 115c5010..ff4843c8 100644
--- a/kmplot/kmplot/ksliderwindow.h
+++ b/kmplot/kmplot/ksliderwindow.h
@@ -37,7 +37,7 @@ class KSliderWindow : public SliderWindow
 	public:
 		/// @param parent points to the parent widget.
 		/// @param num number of this instance.
-		KSliderWindow(QWidget* parent, int num );
+		KSliderWindow(TQWidget* parent, int num );
 		virtual ~KSliderWindow();
 
 	private slots:
@@ -49,8 +49,8 @@ class KSliderWindow : public SliderWindow
 		void windowClosed(int);
 
 	private:
-		bool eventFilter( QObject *obj, QEvent *ev );
-		void closeEvent( QCloseEvent * );
+		bool eventFilter( TQObject *obj, TQEvent *ev );
+		void closeEvent( TQCloseEvent * );
 		KPopupMenu *m_popupmenu;
 		int m_num;
 };
diff --git a/kmplot/kmplot/parser.cpp b/kmplot/kmplot/parser.cpp
index 1f3fa011..ed064b85 100644
--- a/kmplot/kmplot/parser.cpp
+++ b/kmplot/kmplot/parser.cpp
@@ -135,7 +135,7 @@ void Parser::ps_init()
 Parser::~Parser()
 {
         kdDebug() << "Exiting......" << endl;
-        for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+        for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
         {
                 kdDebug() << "Deleting something... :-)" << endl;
                 delete [](*it).mem;
@@ -150,7 +150,7 @@ void Parser::setAngleMode(int angle)
 		m_anglemode = M_PI/180;	
 }
 
-void Parser::setDecimalSymbol(const QString c)
+void Parser::setDecimalSymbol(const TQString c)
 {
 	m_decimalsymbol = c;
 }
@@ -168,7 +168,7 @@ uint Parser::getNewId()
         while (1 )
         {
                 found = false;
-                for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+                for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
                 {
                         if (it->id == i && !it->fname.isEmpty())
                         {
@@ -182,7 +182,7 @@ uint Parser::getNewId()
         }
 }
 
-double Parser::eval(QString str)
+double Parser::eval(TQString str)
 {
 	stack=new double [STACKSIZE];
 	stkptr=stack;
@@ -197,7 +197,7 @@ double Parser::eval(QString str)
 		return 0;
 	}
 	for (uint i=0;i<str.length();i++ )
-		if (str.at(i).category() == QChar::Letter_Uppercase)
+		if (str.at(i).category() == TQChar::Letter_Uppercase)
 		{
 			err=14;
 			delete []stack;
@@ -237,7 +237,7 @@ int Parser::idValue(int const ix)
 int Parser::ixValue(uint const id)
 {
         int ix=0;
-        for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+        for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
         {
                 if ( it->id ==id)
                         return ix;
@@ -248,7 +248,7 @@ int Parser::ixValue(uint const id)
 
 double Parser::fkt(uint const id, double const x)
 {
-        for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+        for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
         {
                 if ( it->id == id)
                         return fkt(it,x);
@@ -322,7 +322,7 @@ double Parser::fkt(Ufkt *it, double const x)
                         {
                                 puf=(uint*)it->mptr;
                                 uint id = *puf++;
-                                for( QValueVector<Ufkt>::iterator ite = ufkt.begin(); ite != ufkt.end(); ++ite)
+                                for( TQValueVector<Ufkt>::iterator ite = ufkt.begin(); ite != ufkt.end(); ++ite)
                                 {
                                         if ( ite->id == id)
                                         {
@@ -341,9 +341,9 @@ double Parser::fkt(Ufkt *it, double const x)
         }
 }
 
-int Parser::addfkt(QString str)
+int Parser::addfkt(TQString str)
 {
-	QString const extstr = str;
+	TQString const extstr = str;
 	stkptr=stack=0;
 	err=0;
 	errpos=1;
@@ -390,7 +390,7 @@ int Parser::addfkt(QString str)
                 temp.mem=new unsigned char [MEMSIZE];
                 ufkt.append(temp );
         }
-        QString const fname = str.left(p1);
+        TQString const fname = str.left(p1);
         Ufkt *temp = &ufkt.last();
 	temp->fstr=extstr;
         temp->mptr = 0;
@@ -431,7 +431,7 @@ void Parser::reparse(int ix)
 void Parser::reparse(Ufkt *item)
 {
 	kdDebug() << "Reparsing: " << item->fstr << endl;
-	QString str = item->fstr.latin1();
+	TQString str = item->fstr.latin1();
 	err=0;
 	errpos=1;
 
@@ -477,21 +477,21 @@ void Parser::reparse(Ufkt *item)
 	errpos=0;
 }
 
-void Parser::fix_expression(QString &str, int const pos)
+void Parser::fix_expression(TQString &str, int const pos)
 {
         str.remove(" " );
         
         //insert '*' when it is needed
-        QChar ch;
+        TQChar ch;
         bool function = false;
         for(uint i=pos; i <  str.length();i++)
         {
                 ch = str.at(i);
-                if ( str.at(i+1)=='(' && ch.category()==QChar::Letter_Lowercase )
+                if ( str.at(i+1)=='(' && ch.category()==TQChar::Letter_Lowercase )
                 {
-                        QString str_function(ch);
+                        TQString str_function(ch);
                         int n=i-1;
-                        while (n>0 && str.at(n).category() == QChar::Letter_Lowercase )
+                        while (n>0 && str.at(n).category() == TQChar::Letter_Lowercase )
                         {
                                      str_function.prepend(str.at(n));
                                      --n;
@@ -499,7 +499,7 @@ void Parser::fix_expression(QString &str, int const pos)
                         if (str_function == "tanh" || str_function == "tan" || str_function =="sqrt" || str_function =="sqr" || str_function =="sin" || str_function =="sinh" || str_function =="sign" || str_function =="sech" || str_function =="sec" || str_function =="log" || str_function =="ln" || str_function =="exp" || str_function =="coth" || str_function =="cot" || str_function =="cosh" || str_function =="cosech" || str_function =="cosec" || str_function =="cos" || str_function =="artanh" || str_function =="arsinh" || str_function =="arsech" || str_function =="arctan" || str_function =="arcsin" || str_function =="arcsec" || str_function =="arcoth" || str_function =="arcosh" || str_function =="arcosech" || str_function =="arccot" || str_function =="arccosec" || str_function =="arccos" || str_function =="abs" || str_function=="arctanh" || str_function=="arcsinh" || str_function=="arccosh")
                                 function = true;
                         else
-                                for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+                                for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
                                 {
                                         for ( int j=i; j>0 && (str.at(j).isLetter() || str.at(j).isNumber() ) ; --j)
                                         {
@@ -511,15 +511,15 @@ void Parser::fix_expression(QString &str, int const pos)
                 else  if (function)
                         function = false;
                 
-                if( (ch.isNumber() || ch.category()==QChar::Letter_Uppercase )&& ( str.at(i-1).isLetter() || str.at(i-1) == ')' ) || (ch.isLetter() && str.at(i-1)==')') )
+                if( (ch.isNumber() || ch.category()==TQChar::Letter_Uppercase )&& ( str.at(i-1).isLetter() || str.at(i-1) == ')' ) || (ch.isLetter() && str.at(i-1)==')') )
                         str.insert(i,'*');
-                else if( (ch.isNumber() || ch == ')' || ch.category()==QChar::Letter_Uppercase) && ( str.at(i+1).isLetter() || str.at(i+1) == '(' ) || (ch.isLetter() && str.at(i+1)=='(' && !function ) )
+                else if( (ch.isNumber() || ch == ')' || ch.category()==TQChar::Letter_Uppercase) && ( str.at(i+1).isLetter() || str.at(i+1) == '(' ) || (ch.isLetter() && str.at(i+1)=='(' && !function ) )
                 {
                         str.insert(i+1,'*');
                         i++;
                 }
         }
-        QString str_end = str.mid(pos);
+        TQString str_end = str.mid(pos);
         str_end = str_end.replace(m_decimalsymbol, "."); //replace the locale decimal symbol with a '.'
         str.truncate(pos);
         str.append(str_end);
@@ -534,11 +534,11 @@ bool Parser::delfkt( Ufkt *item)
 	  KMessageBox::error(0,i18n("This function is depending on an other function"));
 	  return false;
 	}
-	for(QValueVector<Ufkt>::iterator it1=ufkt.begin(); it1!=ufkt.end(); ++it1)
+	for(TQValueVector<Ufkt>::iterator it1=ufkt.begin(); it1!=ufkt.end(); ++it1)
 	{
 		if (it1==item)
 			continue;
-		for(QValueList<int>::iterator it2=it1->dep.begin(); it2!=it1->dep.end(); ++it2)
+		for(TQValueList<int>::iterator it2=it1->dep.begin(); it2!=it1->dep.end(); ++it2)
 			if ( (uint)*it2 == item->id )
 				it2 = it1->dep.erase(it2);
 	}
@@ -551,7 +551,7 @@ bool Parser::delfkt( Ufkt *item)
         else
         {
                 //kdDebug() << "Deleting something" << endl;
-		QChar const extstr_c = item->fstr.at(0);
+		TQChar const extstr_c = item->fstr.at(0);
 		uint const id = item->id;
 		delete []item->mem;
                 ufkt.erase(item);
@@ -710,9 +710,9 @@ void Parser::primary()
                         return;
                 }
         }
-        for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+        for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
 	{
-                if(QString(lptr)=="pi" || QString(lptr)=="e") continue;
+                if(TQString(lptr)=="pi" || TQString(lptr)=="e") continue;
 
 		if( match(it->fname.latin1()) )
 		{
@@ -931,7 +931,7 @@ void Parser::addfptr(uint id)
 	}
 	else
         {
-                for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+                for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
                         if ( it->id == id)
                         {
                                 *stkptr=fkt(it, *stkptr);
@@ -941,9 +941,9 @@ void Parser::addfptr(uint id)
 }
 
 
-int Parser::fnameToId(const QString &name)
+int Parser::fnameToId(const TQString &name)
 {
-        for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+        for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
 	{
                 if(name==it->fname)
                         return it->id;
@@ -959,33 +959,33 @@ int Parser::parserError(bool showMessageBox)
         switch(err)
 	{
                 case 1:  KMessageBox::error(0, i18n("Parser error at position %1:\n"
-		                                      "Syntax error").arg(QString::number(errpos)), "KmPlot");
+		                                      "Syntax error").arg(TQString::number(errpos)), "KmPlot");
                         break;
                 case 2:  KMessageBox::error(0, i18n("Parser error at position %1:\n"
-		                                      "Missing parenthesis").arg(QString::number(errpos)), "KmPlot");
+		                                      "Missing parenthesis").arg(TQString::number(errpos)), "KmPlot");
                         break;
                 case 3:  KMessageBox::error(0, i18n("Parser error at position %1:\n"
-		                                      "Function name unknown").arg(QString::number(errpos)), "KmPlot");
+		                                      "Function name unknown").arg(TQString::number(errpos)), "KmPlot");
                         break;
                 case 4:  KMessageBox::error(0, i18n("Parser error at position %1:\n"
-		                                      "Void function variable").arg(QString::number(errpos)), "KmPlot");
+		                                      "Void function variable").arg(TQString::number(errpos)), "KmPlot");
                         break;
                 case 5:  KMessageBox::error(0, i18n("Parser error at position %1:\n"
-		                                      "Too many functions").arg(QString::number(errpos)), "KmPlot");
+		                                      "Too many functions").arg(TQString::number(errpos)), "KmPlot");
                         break;
                 case 6:  KMessageBox::error(0, i18n("Parser error at position %1:\n"
-		                                      "Token-memory overflow").arg(QString::number(errpos)), "KmPlot");
+		                                      "Token-memory overflow").arg(TQString::number(errpos)), "KmPlot");
                         break;
                 case 7:  KMessageBox::error(0, i18n("Parser error at position %1:\n"
-		                                      "Stack overflow").arg(QString::number(errpos)), "KmPlot");
+		                                      "Stack overflow").arg(TQString::number(errpos)), "KmPlot");
                         break;
                 case 8:  KMessageBox::error(0, i18n("Parser error at position %1:\n"
-		                                      "Name of function not free.").arg(QString::number(errpos)), "KmPlot");
+		                                      "Name of function not free.").arg(TQString::number(errpos)), "KmPlot");
                         break;
                 case 9:  KMessageBox::error(0, i18n("Parser error at position %1:\n"
-		                                      "recursive function not allowed.").arg(QString::number(errpos)), "KmPlot");
+		                                      "recursive function not allowed.").arg(TQString::number(errpos)), "KmPlot");
                         break;
-                case 10:  KMessageBox::error(0, i18n("Could not find a defined constant at position %1." ).arg(QString::number(errpos)),
+                case 10:  KMessageBox::error(0, i18n("Could not find a defined constant at position %1." ).arg(TQString::number(errpos)),
                                                                 "KmPlot");
                         break;
                 case 11:  KMessageBox::error(0, i18n("Empty function"), "KmPlot");
@@ -1003,9 +1003,9 @@ int Parser::parserError(bool showMessageBox)
 
 
 // static
-QString Parser::number( double value )
+TQString Parser::number( double value )
 {
-       QString str = QString::number( value, 'g', 6 );
+       TQString str = TQString::number( value, 'g', 6 );
        str.replace( 'e', "*10^" );
 //     kDebug() << "returning str="<<str<<endl;
        return str;
diff --git a/kmplot/kmplot/parser.h b/kmplot/kmplot/parser.h
index 82111080..13098039 100644
--- a/kmplot/kmplot/parser.h
+++ b/kmplot/kmplot/parser.h
@@ -27,8 +27,8 @@
  * \brief Contains the parser core class Parser. */
  
 // Qt includes
-#include <qstring.h>
-#include <qvaluevector.h>
+#include <tqstring.h>
+#include <tqvaluevector.h>
 
 #include "parseriface.h"
 
@@ -99,13 +99,13 @@ double arctan(double x);
 class ParameterValueItem
 {
 	public:
-		ParameterValueItem(const QString &e, double v)
+		ParameterValueItem(const TQString &e, double v)
 		{
 			expression = e;
 			value = v;
 		}
 		ParameterValueItem() {;}
-		QString expression;
+		TQString expression;
 		double value;
 };
 
@@ -122,13 +122,13 @@ class Ufkt
 		uint id;
 		unsigned char *mem;     ///< Pointer to the allocated memory for the tokens.
 		unsigned char *mptr;    ///< Pointer to the token.
-		QString fname;          ///< Name of the function.
-		QString fvar;           ///< Dummy variable.
-		QString fpar;           ///< Parameter.
-		QString fstr;           ///< Function expression.
+		TQString fname;          ///< Name of the function.
+		TQString fvar;           ///< Dummy variable.
+		TQString fpar;           ///< Parameter.
+		TQString fstr;           ///< Function expression.
 		double k,               ///< Function parameter.
 		oldy;                   ///< The last y-value needed for Euler's method
-		QValueList<int> dep;   /// A list with all functions this function depends on
+		TQValueList<int> dep;   /// A list with all functions this function depends on
         
 		bool f_mode, ///< \a f_mode == 1: draw the plot.
 		f1_mode, ///< \a f1_mode == 1.  draw the 1st derivative, too.
@@ -138,7 +138,7 @@ class Ufkt
 		int linewidth,f1_linewidth,f2_linewidth, integral_linewidth; ///< Line width.
 		/** Number of parameter values. 
 		* @see FktExt::k_liste */
-		QString str_dmin, str_dmax, str_startx, str_starty ; /// Plot range, input strings.
+		TQString str_dmin, str_dmax, str_startx, str_starty ; /// Plot range, input strings.
 		double dmin, ///< Custom plot range, lower boundage.
 		dmax, ///< Custom plot range, upper boundage.
 		/** List of parameter values. 
@@ -151,7 +151,7 @@ class Ufkt
 		QRgb color, ///< current color.
 		f1_color, f2_color, integral_color;
 		int use_slider; ///< -1: none (use list), else: slider number
-		QValueList<ParameterValueItem> parameters; ///< List with parameter for the function
+		TQValueList<ParameterValueItem> parameters; ///< List with parameter for the function
 		bool usecustomxmin, usecustomxmax;
         	// TODO double slider_min, slider_max; ///< extreme values of the slider
 };
@@ -182,24 +182,24 @@ public:
 	/**
        * @return A string that is safe to use as a number in a string to be
        * parsed. This is needed as e.g. "1.2e-3" is not allowed (e is a
-       * constant) - so cannot use the QString::number.
+       * constant) - so cannot use the TQString::number.
        */
-      static QString number( double value );
+      static TQString number( double value );
 	
         /// Returns the result of a calculation
         double fkt(Ufkt *it, double const x);
         double fkt(uint id, double const x);
 	
 	/// Evaluates the given expression.
-	double eval(QString);
+	double eval(TQString);
 	/// Adds a user defined function with the given equation. The new function's ID-number is returned.
-	int addfkt(QString);
+	int addfkt(TQString);
         /// Removes the function with the given id.
 	bool delfkt(uint id);
         bool delfkt( Ufkt *item);
 	
 	/// Returns the ID-number of the function "name". If the function couldn't be found, -1 is returned.
-	int fnameToId(const QString &name);
+	int fnameToId(const TQString &name);
 	/// Returns the current error value. If showMessageBox is true, an error message box will appear if an error was found
 	int parserError(bool showMessageBox=TRUE);
 	
@@ -208,7 +208,7 @@ public:
 	/// Sets the angletype. TRUE is radians and FALSE degrees
 	void setAngleMode(int);
 	/// sets the decimal symbol
-	void setDecimalSymbol(const QString );
+	void setDecimalSymbol(const TQString );
 	
         /// reparse the function. It also do a grammer check for the expression
 	void reparse(int ix);
@@ -219,8 +219,8 @@ public:
         int ixValue(uint const id);/// Converts an ID-numer to an index-value
         uint countFunctions(); /// Returns how many functions there are
 
-	QValueVector<Constant> constant;
-        QValueVector<Ufkt> ufkt;///< Points to the array of user defined functions.
+	TQValueVector<Constant> constant;
+        TQValueVector<Ufkt> ufkt;///< Points to the array of user defined functions.
 
 private:
 	/** Mathematical function. */
@@ -254,7 +254,7 @@ private:
 	///  Position where the error occurred.
         int errpos;
 
-        void fix_expression(QString &, int const); ///adding extra *-characters, remove spaces and replace the locale .-character with '.'
+        void fix_expression(TQString &, int const); ///adding extra *-characters, remove spaces and replace the locale .-character with '.'
         
 	void ps_init(),
 	heir1(),
@@ -279,7 +279,7 @@ private:
 	double *stack, 		// Zeiger auf Stackanfang
 	*stkptr;		    // Stackpointer
 	static double  m_anglemode;
-	QString m_decimalsymbol;
+	TQString m_decimalsymbol;
 };
 
 #endif	// parser_included
diff --git a/kmplot/kmplot/parseriface.h b/kmplot/kmplot/parseriface.h
index 07020ebb..eb20625f 100644
--- a/kmplot/kmplot/parseriface.h
+++ b/kmplot/kmplot/parseriface.h
@@ -27,8 +27,8 @@
 #define XPARSERIFACE_H
 
 #include <dcopobject.h>
-#include <qcolor.h>
-#include <qstringlist.h>
+#include <tqcolor.h>
+#include <tqstringlist.h>
 
 /**
 @author Fredrik Edemar
@@ -38,14 +38,14 @@ class ParserIface : virtual public DCOPObject
 {
 	K_DCOP
 k_dcop:
-	virtual bool addFunction(const QString &extstr, bool f_mode, bool f1_mode, bool f2_mode, bool integral_mode, bool integral_use_precision, int linewidth, int f1_linewidth, int f2_linewidth, int integral_linewidth, const QString &str_dmin, const QString &str_dmax, const QString &str_startx, const QString &str_starty, double integral_precision, QRgb color, QRgb f1_color, QRgb f2_color, QRgb integral_color, QStringList str_parameter, int use_slider) = 0;
+	virtual bool addFunction(const TQString &extstr, bool f_mode, bool f1_mode, bool f2_mode, bool integral_mode, bool integral_use_precision, int linewidth, int f1_linewidth, int f2_linewidth, int integral_linewidth, const TQString &str_dmin, const TQString &str_dmax, const TQString &str_startx, const TQString &str_starty, double integral_precision, QRgb color, QRgb f1_color, QRgb f2_color, QRgb integral_color, TQStringList str_parameter, int use_slider) = 0;
 	
-	virtual int addFunction(const QString &f_str) = 0;
+	virtual int addFunction(const TQString &f_str) = 0;
 	virtual bool delfkt(uint id) = 0;
-	virtual bool setFunctionExpression(const QString &f_str, uint id) = 0;
+	virtual bool setFunctionExpression(const TQString &f_str, uint id) = 0;
 	virtual uint countFunctions() = 0;
-	virtual QStringList listFunctionNames() = 0;
-	virtual int fnameToId(const QString &name) = 0;
+	virtual TQStringList listFunctionNames() = 0;
+	virtual int fnameToId(const TQString &name) = 0;
 	virtual double fkt(uint id, double x) = 0;
 	virtual bool functionFVisible(uint id) = 0;
 	virtual bool functionF1Visible(uint id) = 0;
@@ -55,15 +55,15 @@ k_dcop:
 	virtual bool setFunctionF1Visible(bool visible, uint id) = 0;
 	virtual bool setFunctionF2Visible(bool visible, uint id) = 0;
 	virtual bool setFunctionIntVisible(bool visible, uint id) = 0;
-	virtual QString functionStr(uint id) = 0;
-	virtual QColor functionFColor(uint id) = 0;
-	virtual QColor functionF1Color(uint id) = 0;
-	virtual QColor functionF2Color(uint id) = 0;
-	virtual QColor functionIntColor(uint id) = 0;
-	virtual bool setFunctionFColor(const QColor &color, uint id) = 0;
-	virtual bool setFunctionF1Color(const QColor &color, uint id) = 0;
-	virtual bool setFunctionF2Color(const QColor &color, uint id) = 0;
-	virtual bool setFunctionIntColor(const QColor &color, uint id) = 0;
+	virtual TQString functionStr(uint id) = 0;
+	virtual TQColor functionFColor(uint id) = 0;
+	virtual TQColor functionF1Color(uint id) = 0;
+	virtual TQColor functionF2Color(uint id) = 0;
+	virtual TQColor functionIntColor(uint id) = 0;
+	virtual bool setFunctionFColor(const TQColor &color, uint id) = 0;
+	virtual bool setFunctionF1Color(const TQColor &color, uint id) = 0;
+	virtual bool setFunctionF2Color(const TQColor &color, uint id) = 0;
+	virtual bool setFunctionIntColor(const TQColor &color, uint id) = 0;
 	virtual int functionFLineWidth(uint id) = 0;
 	virtual int functionF1LineWidth(uint id) = 0;
 	virtual int functionF2LineWidth(uint id) = 0;
@@ -72,17 +72,17 @@ k_dcop:
 	virtual bool setFunctionF1LineWidth(int linewidth, uint id) = 0;
 	virtual bool setFunctionF2LineWidth(int linewidth, uint id) = 0;
 	virtual bool setFunctionIntLineWidth(int linewidth, uint id) = 0;
-	virtual QStringList functionParameterList(uint id) = 0;
-	virtual bool functionAddParameter(const QString &new_parameter, uint id) = 0;
-	virtual bool functionRemoveParameter(const QString &remove_parameter, uint id) = 0;
-	virtual QString functionMinValue(uint id) = 0;
-	virtual QString functionMaxValue(uint id) = 0;
-	virtual bool setFunctionMinValue(const QString &min, uint id) = 0;
-	virtual bool setFunctionMaxValue(const QString &max, uint id) = 0;
-	virtual QString functionStartXValue(uint id) = 0;
-	virtual QString functionStartYValue(uint id) = 0;
-	virtual bool setFunctionStartXValue(const QString &x, uint id) = 0;
-	virtual bool setFunctionStartYValue(const QString &y, uint id) = 0;
+	virtual TQStringList functionParameterList(uint id) = 0;
+	virtual bool functionAddParameter(const TQString &new_parameter, uint id) = 0;
+	virtual bool functionRemoveParameter(const TQString &remove_parameter, uint id) = 0;
+	virtual TQString functionMinValue(uint id) = 0;
+	virtual TQString functionMaxValue(uint id) = 0;
+	virtual bool setFunctionMinValue(const TQString &min, uint id) = 0;
+	virtual bool setFunctionMaxValue(const TQString &max, uint id) = 0;
+	virtual TQString functionStartXValue(uint id) = 0;
+	virtual TQString functionStartYValue(uint id) = 0;
+	virtual bool setFunctionStartXValue(const TQString &x, uint id) = 0;
+	virtual bool setFunctionStartYValue(const TQString &y, uint id) = 0;
 
 };
 
diff --git a/kmplot/kmplot/qconstanteditor.ui.h b/kmplot/kmplot/qconstanteditor.ui.h
index 3c174b76..00fd2554 100644
--- a/kmplot/kmplot/qconstanteditor.ui.h
+++ b/kmplot/kmplot/qconstanteditor.ui.h
@@ -23,7 +23,7 @@ void QConstantEditor::cmdDelete_clicked()
 }
 
 
-void QConstantEditor::varlist_clicked( QListViewItem * )
+void QConstantEditor::varlist_clicked( TQListViewItem * )
 {
 }
 
@@ -38,7 +38,7 @@ void QConstantEditor::newNewConstantSlot()
 }
 
 
-void QConstantEditor::varlist_doubleClicked( QListViewItem * )
+void QConstantEditor::varlist_doubleClicked( TQListViewItem * )
 {
 
 }
diff --git a/kmplot/kmplot/xparser.cpp b/kmplot/kmplot/xparser.cpp
index cc618e13..18d9a3b3 100644
--- a/kmplot/kmplot/xparser.cpp
+++ b/kmplot/kmplot/xparser.cpp
@@ -44,11 +44,11 @@ XParser::~XParser()
 {
 }
 
-bool XParser::getext( Ufkt *item, const QString fstr )
+bool XParser::getext( Ufkt *item, const TQString fstr )
 {
   	bool errflg = false;
    	int p1, p2, p3, pe;
-	QString tstr;
+	TQString tstr;
 	pe = fstr.length();
 	if ( fstr.find( 'N' ) != -1 )
 		item->f_mode = false;
@@ -71,7 +71,7 @@ bool XParser::getext( Ufkt *item, const QString fstr )
 	if ( p1 != -1 )
 	{
 		p1 += 2;
-		const QString str = fstr.mid( p1, pe - p1);
+		const TQString str = fstr.mid( p1, pe - p1);
 		p2 = str.find(',');
 		p3 = str.find(']');
 		if ( p2 > 0 && p2 < p3 )
@@ -95,7 +95,7 @@ bool XParser::getext( Ufkt *item, const QString fstr )
 	{
 		int i = 0;
 		p1 += 2;
-		QString str = fstr.mid( p1, 1000);
+		TQString str = fstr.mid( p1, 1000);
 		p3 = str.find( ']' );
 		do
 		{
@@ -134,7 +134,7 @@ double XParser::a2fkt( Ufkt *u_item, double x, double h )
 	return ( fkt( u_item, x + h + h ) - 2 * fkt( u_item, x + h ) + fkt( u_item, x ) ) / h / h;
 }
 
-void XParser::findFunctionName(QString &function_name, int const id, int const type)
+void XParser::findFunctionName(TQString &function_name, int const id, int const type)
 {
   char last_character;
   int pos;
@@ -149,7 +149,7 @@ void XParser::findFunctionName(QString &function_name, int const id, int const t
     {
       if ( pos==0 && last_character == 'r') continue;
       function_name.at(pos)=last_character;
-      for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+      for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
       {
         if (it == ufkt.begin() && it->fname.isEmpty() ) continue;
         if ( it->fstr.startsWith(function_name+'(') && (int)it->id!=id) //check if the name is free
@@ -168,13 +168,13 @@ void XParser::findFunctionName(QString &function_name, int const id, int const t
   function_name = "e"; //this should never happen
 }
 
-void XParser::fixFunctionName( QString &str, int const type, int const id)
+void XParser::fixFunctionName( TQString &str, int const type, int const id)
 {
   if ( str.startsWith( "y=" ) ) //we find a free function name
   {
     str.remove( 0, 2 );
     str.prepend("(x)=");
-    QString function_name;
+    TQString function_name;
     findFunctionName(function_name, id, type);
     str.prepend( function_name );
   }
@@ -195,13 +195,13 @@ void XParser::fixFunctionName( QString &str, int const type, int const id)
       p1++;
       p2++;
     }
-    QString const fname = str.left(p1);
-    for ( QValueVector<Ufkt>::iterator it = ufkt.begin(); it!=ufkt.end(); ++it )
+    TQString const fname = str.left(p1);
+    for ( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it!=ufkt.end(); ++it )
     {
       if (it->fname == fname)
       {
         str = str.mid(p1,str.length()-1);
-        QString function_name;
+        TQString function_name;
         if ( type == XParser::Polar )
           function_name = "rf";
         else if ( type == XParser::ParametricX )
@@ -218,7 +218,7 @@ void XParser::fixFunctionName( QString &str, int const type, int const id)
   }
   else if ( p1==-1 || !str.at(p1+1).isLetter() ||  p2==-1 || str.at(p2+1 )!= '=')
   {
-    QString function_name;
+    TQString function_name;
     if ( type == XParser::Polar )
       function_name = "rf";
     else if ( type == XParser::ParametricX )
@@ -233,7 +233,7 @@ void XParser::fixFunctionName( QString &str, int const type, int const id)
   }
 }
 
-double XParser::euler_method(const double x, const QValueVector<Ufkt>::iterator it)
+double XParser::euler_method(const double x, const TQValueVector<Ufkt>::iterator it)
 {
 	double const y = it->oldy + ((x-it->oldx) * it->oldyprim);
 	it->oldy = y;
@@ -303,10 +303,10 @@ int XParser::getNextIndex()
         return getNewId();
 }
 
-QStringList XParser::listFunctionNames()
+TQStringList XParser::listFunctionNames()
 {
-	QStringList list;
-	for( QValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
+	TQStringList list;
+	for( TQValueVector<Ufkt>::iterator it = ufkt.begin(); it != ufkt.end(); ++it)
 	{
 		list.append(it->fname);
 	}
@@ -379,7 +379,7 @@ bool XParser::setFunctionIntVisible(bool visible, uint id)
 	return true;
 }
 
-QString XParser::functionStr(uint id)
+TQString XParser::functionStr(uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
@@ -387,35 +387,35 @@ QString XParser::functionStr(uint id)
 	return ufkt[ix].fstr;
 }
 
-QColor XParser::functionFColor(uint id)
+TQColor XParser::functionFColor(uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
-		return QColor();
-	return QColor(ufkt[ix].color);
+		return TQColor();
+	return TQColor(ufkt[ix].color);
 }
-QColor XParser::functionF1Color(uint id)
+TQColor XParser::functionF1Color(uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
-		return QColor();
-	return QColor(ufkt[ix].f1_color);
+		return TQColor();
+	return TQColor(ufkt[ix].f1_color);
 }
-QColor XParser::functionF2Color(uint id)
+TQColor XParser::functionF2Color(uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
-		return QColor();
-	return QColor(ufkt[ix].f2_color);
+		return TQColor();
+	return TQColor(ufkt[ix].f2_color);
 }
-QColor XParser::functionIntColor(uint id)
+TQColor XParser::functionIntColor(uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
-		return QColor();
-	return QColor(ufkt[ix].integral_color);
+		return TQColor();
+	return TQColor(ufkt[ix].integral_color);
 }
-bool XParser::setFunctionFColor(const QColor &color, uint id)
+bool XParser::setFunctionFColor(const TQColor &color, uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
@@ -424,7 +424,7 @@ bool XParser::setFunctionFColor(const QColor &color, uint id)
 	m_modified = true;
 	return true;
 }
-bool XParser::setFunctionF1Color(const QColor &color, uint id)
+bool XParser::setFunctionF1Color(const TQColor &color, uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
@@ -433,7 +433,7 @@ bool XParser::setFunctionF1Color(const QColor &color, uint id)
 	m_modified = true;
 	return true;
 }		
-bool XParser::setFunctionF2Color(const QColor &color, uint id)
+bool XParser::setFunctionF2Color(const TQColor &color, uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
@@ -442,7 +442,7 @@ bool XParser::setFunctionF2Color(const QColor &color, uint id)
 	m_modified = true;
 	return true;
 }
-bool XParser::setFunctionIntColor(const QColor &color, uint id)
+bool XParser::setFunctionIntColor(const TQColor &color, uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
@@ -517,7 +517,7 @@ bool XParser::setFunctionIntLineWidth(int linewidth, uint id)
 	return true;
 }
 
-QString XParser::functionMinValue(uint id)
+TQString XParser::functionMinValue(uint id)
 {
   int const ix = ixValue(id);
   if (ix==-1)
@@ -525,7 +525,7 @@ QString XParser::functionMinValue(uint id)
   return ufkt[ix].str_dmin;
 }
 
-bool XParser::setFunctionMinValue(const QString &min, uint id)
+bool XParser::setFunctionMinValue(const TQString &min, uint id)
 {
   int const ix = ixValue(id);
   if (ix==-1)
@@ -535,7 +535,7 @@ bool XParser::setFunctionMinValue(const QString &min, uint id)
   return true;
 }
 
-QString XParser::functionMaxValue(uint id)
+TQString XParser::functionMaxValue(uint id)
 {
   int const ix = ixValue(id);
   if (ix==-1)
@@ -543,7 +543,7 @@ QString XParser::functionMaxValue(uint id)
   return ufkt[ix].str_dmax;
 }
 
-bool XParser::setFunctionMaxValue(const QString &max, uint id)
+bool XParser::setFunctionMaxValue(const TQString &max, uint id)
 {
   int const ix = ixValue(id);
   if (ix==-1)
@@ -553,7 +553,7 @@ bool XParser::setFunctionMaxValue(const QString &max, uint id)
   return true;
 }
 
-QString XParser::functionStartXValue(uint id)
+TQString XParser::functionStartXValue(uint id)
 {
   int const ix = ixValue(id);
   if (ix==-1)
@@ -561,7 +561,7 @@ QString XParser::functionStartXValue(uint id)
   return ufkt[ix].str_startx;
 }
 
-bool XParser::setFunctionStartXValue(const QString &x, uint id)
+bool XParser::setFunctionStartXValue(const TQString &x, uint id)
 {
   int const ix = ixValue(id);
   if (ix==-1)
@@ -571,7 +571,7 @@ bool XParser::setFunctionStartXValue(const QString &x, uint id)
   return true;
 }
 
-QString XParser::functionStartYValue(uint id)
+TQString XParser::functionStartYValue(uint id)
 {
   int const ix = ixValue(id);
   if (ix==-1)
@@ -579,7 +579,7 @@ QString XParser::functionStartYValue(uint id)
   return ufkt[ix].str_starty;
 }
 
-bool XParser::setFunctionStartYValue(const QString &y, uint id)
+bool XParser::setFunctionStartYValue(const TQString &y, uint id)
 {
   int const ix = ixValue(id);
   if (ix==-1)
@@ -589,24 +589,24 @@ bool XParser::setFunctionStartYValue(const QString &y, uint id)
   return true;
 }
 
-QStringList XParser::functionParameterList(uint id)
+TQStringList XParser::functionParameterList(uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
-		return QStringList();
+		return TQStringList();
 	Ufkt *item = &ufkt[ix];
-	QStringList str_parameter;
-	for ( QValueList<ParameterValueItem>::iterator it = item->parameters.begin(); it != item->parameters.end(); ++it)
+	TQStringList str_parameter;
+	for ( TQValueList<ParameterValueItem>::iterator it = item->parameters.begin(); it != item->parameters.end(); ++it)
 		str_parameter.append( (*it).expression);
 	return str_parameter;
 }
-bool XParser::functionAddParameter(const QString &new_parameter, uint id)
+bool XParser::functionAddParameter(const TQString &new_parameter, uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
 		return false;
 	Ufkt *tmp_ufkt = &ufkt[ix];
-	for ( QValueList<ParameterValueItem>::iterator it = tmp_ufkt->parameters.begin(); it != tmp_ufkt->parameters.end(); ++it)
+	for ( TQValueList<ParameterValueItem>::iterator it = tmp_ufkt->parameters.begin(); it != tmp_ufkt->parameters.end(); ++it)
 		if ( (*it).expression == new_parameter) //check if the parameter already exists
 			return false;
 
@@ -617,7 +617,7 @@ bool XParser::functionAddParameter(const QString &new_parameter, uint id)
 	m_modified = true;
 	return true;
 }
-bool XParser::functionRemoveParameter(const QString &remove_parameter, uint id)
+bool XParser::functionRemoveParameter(const TQString &remove_parameter, uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
@@ -625,7 +625,7 @@ bool XParser::functionRemoveParameter(const QString &remove_parameter, uint id)
 	Ufkt *tmp_ufkt = &ufkt[ix];
 	
 	bool found = false;
-	QValueList<ParameterValueItem>::iterator it;
+	TQValueList<ParameterValueItem>::iterator it;
 	for ( it = tmp_ufkt->parameters.begin(); it != tmp_ufkt->parameters.end(); ++it)
 		if ( (*it).expression == remove_parameter) //check if the parameter already exists
 		{
@@ -638,9 +638,9 @@ bool XParser::functionRemoveParameter(const QString &remove_parameter, uint id)
 	m_modified = true;
 	return true;
 }
-int XParser::addFunction(const QString &f_str)
+int XParser::addFunction(const TQString &f_str)
 {
-	QString added_function(f_str);
+	TQString added_function(f_str);
 	int const pos = added_function.find(';');
 	if (pos!=-1)
 	  added_function = added_function.left(pos);
@@ -664,9 +664,9 @@ int XParser::addFunction(const QString &f_str)
 	return id;
 }
 
-bool XParser::addFunction(const QString &fstr_const, bool f_mode, bool f1_mode, bool f2_mode, bool integral_mode, bool integral_use_precision, int linewidth, int f1_linewidth, int f2_linewidth, int integral_linewidth, const QString &str_dmin, const QString &str_dmax, const QString &str_startx, const QString &str_starty, double integral_precision, QRgb color, QRgb f1_color, QRgb f2_color, QRgb integral_color, QStringList str_parameter, int use_slider)
+bool XParser::addFunction(const TQString &fstr_const, bool f_mode, bool f1_mode, bool f2_mode, bool integral_mode, bool integral_use_precision, int linewidth, int f1_linewidth, int f2_linewidth, int integral_linewidth, const TQString &str_dmin, const TQString &str_dmax, const TQString &str_startx, const TQString &str_starty, double integral_precision, QRgb color, QRgb f1_color, QRgb f2_color, QRgb integral_color, TQStringList str_parameter, int use_slider)
 {
-	QString fstr(fstr_const);
+	TQString fstr(fstr_const);
 	switch ( fstr.at(0).latin1() )
 	{
 	  case 'r':
@@ -727,7 +727,7 @@ bool XParser::addFunction(const QString &fstr_const, bool f_mode, bool f1_mode,
 	added_function->f2_color = f2_color;
 	added_function->integral_color = integral_color;
 	added_function->use_slider = use_slider;
-	for( QStringList::Iterator it = str_parameter.begin(); it != str_parameter.end(); ++it )
+	for( TQStringList::Iterator it = str_parameter.begin(); it != str_parameter.end(); ++it )
 	{
 		double result = eval(*it);
 		if ( parserError(false) != 0)
@@ -738,14 +738,14 @@ bool XParser::addFunction(const QString &fstr_const, bool f_mode, bool f1_mode,
 	return true;
 }
 
-bool XParser::setFunctionExpression(const QString &f_str, uint id)
+bool XParser::setFunctionExpression(const TQString &f_str, uint id)
 {
 	int const ix = ixValue(id);
 	if (ix==-1)
 		return false;
 	Ufkt *tmp_ufkt = &ufkt[ix];
-	QString const old_fstr = tmp_ufkt->fstr;
-	QString const fstr_begin = tmp_ufkt->fstr.left(tmp_ufkt->fstr.find('=')+1);
+	TQString const old_fstr = tmp_ufkt->fstr;
+	TQString const fstr_begin = tmp_ufkt->fstr.left(tmp_ufkt->fstr.find('=')+1);
 	tmp_ufkt->fstr = fstr_begin+f_str;
 	reparse(tmp_ufkt);
 	if ( parserError(false) != 0)
@@ -757,12 +757,12 @@ bool XParser::setFunctionExpression(const QString &f_str, uint id)
 	return true;
 }
 
-bool XParser::sendFunction(int id, const QString &dcopclient_target)
+bool XParser::sendFunction(int id, const TQString &dcopclient_target)
 {
 	QCStringList cstr_list = kapp->dcopClient()->registeredApplications();
-	QStringList str_list;
+	TQStringList str_list;
 	for ( QCStringList::iterator it = cstr_list.begin(); it!=cstr_list.end();++it )
-		if ( QString(*it).startsWith("kmplot") && *it!=kapp->dcopClient()->appId() )
+		if ( TQString(*it).startsWith("kmplot") && *it!=kapp->dcopClient()->appId() )
 			str_list.append(*it);
 	if ( str_list.isEmpty() )
 	{
@@ -772,7 +772,7 @@ bool XParser::sendFunction(int id, const QString &dcopclient_target)
 	
 	Ufkt *item = &ufkt[ixValue(id)];
 	kdDebug() << "Transferring " << item->fname.latin1() << endl;
-	QString str_result;
+	TQString str_result;
 	if ( dcopclient_target.isEmpty() && item->fname.at(0) == 'y' )
 	  	return false;
 	else if ( dcopclient_target.isEmpty() )
@@ -785,30 +785,30 @@ bool XParser::sendFunction(int id, const QString &dcopclient_target)
 	else
 	  str_result = dcopclient_target;
 	
-	QByteArray parameters;
-	QDataStream arg( parameters, IO_WriteOnly);
+	TQByteArray parameters;
+	TQDataStream arg( parameters, IO_WriteOnly);
  
-  QString str_dmin;
+  TQString str_dmin;
   if (!item->usecustomxmin)
     str_dmin = item->str_dmin;
-  QString str_dmax;
+  TQString str_dmax;
   if (!item->usecustomxmax)
     str_dmax = item->str_dmax;
   
-	QStringList str_parameters;
-	for ( QValueList<ParameterValueItem>::Iterator it = item->parameters.begin(); it != item->parameters.end(); ++it )
+	TQStringList str_parameters;
+	for ( TQValueList<ParameterValueItem>::Iterator it = item->parameters.begin(); it != item->parameters.end(); ++it )
 	  	str_parameters.append( (*it).expression);
 	arg << item->fstr << item->f_mode << item->f1_mode << item->f2_mode << item->integral_mode << item->integral_use_precision << item->linewidth << item->f1_linewidth << item->f2_linewidth << item->integral_linewidth << str_dmin << str_dmax << item->str_startx << item->str_starty << item->integral_precision << item->color << item->f1_color << item->f2_color << item->integral_color << str_parameters << item->use_slider;
-	QByteArray replay_data;
-	QCString replay_type;
-	bool ok = kapp->dcopClient()->call( str_result.utf8(), "Parser", "addFunction(QString,bool,bool,bool,bool,bool,int,int,int,int,QString,QString,QString,QString,double,QRgb,QRgb,QRgb,QRgb,QStringList,int)", parameters, replay_type, replay_data, false);
+	TQByteArray replay_data;
+	TQCString replay_type;
+	bool ok = kapp->dcopClient()->call( str_result.utf8(), "Parser", "addFunction(TQString,bool,bool,bool,bool,bool,int,int,int,int,TQString,TQString,TQString,TQString,double,QRgb,QRgb,QRgb,QRgb,TQStringList,int)", parameters, replay_type, replay_data, false);
 	if (!ok)
 	{
 		KMessageBox::error(0, i18n("An error appeared during the transfer"));
 		return false;
 	}
 
-	QDataStream replay_arg(replay_data, IO_ReadOnly);
+	TQDataStream replay_arg(replay_data, IO_ReadOnly);
 	bool result;
 	replay_arg >> result;
 	if (!result)
@@ -817,7 +817,7 @@ bool XParser::sendFunction(int id, const QString &dcopclient_target)
 		return false;
 	}
 	
-	kapp->dcopClient()->send(str_result.utf8(), "View","drawPlot()",QByteArray() ); //update the other window
+	kapp->dcopClient()->send(str_result.utf8(), "View","drawPlot()",TQByteArray() ); //update the other window
 	
 	if (item->fname.at(0) == 'x') // a parametric function
 		return sendFunction(id+1, str_result);
diff --git a/kmplot/kmplot/xparser.h b/kmplot/kmplot/xparser.h
index 78c4463e..d54b3506 100644
--- a/kmplot/kmplot/xparser.h
+++ b/kmplot/kmplot/xparser.h
@@ -51,7 +51,7 @@ public:
 	/// Evaluates the 2nd dreivative of the function with intex \a ix
 	double a2fkt( Ufkt *, double, double h = 1e-3 );
         /// calculate euler's method when drawing a numeric prime-function
-        double euler_method(const double, const QValueVector<Ufkt>::iterator);
+        double euler_method(const double, const TQValueVector<Ufkt>::iterator);
         
         /// Line width default
         int linewidth0;
@@ -59,7 +59,7 @@ public:
 	
 	enum { Function, Polar, ParametricX, ParametricY }; ///types of functions
 	///Returns an unused function name if it is needed
-	void fixFunctionName(QString &, int const = XParser::Function , int const=-1);
+	void fixFunctionName(TQString &, int const = XParser::Function , int const=-1);
         
         /// Returns the index for the next function.
         int getNextIndex();
@@ -67,15 +67,15 @@ public:
         void prepareAddingFunction(Ufkt *item);
         
         /// Interpretates the extended function string (only used by the old file format)
-	bool getext( Ufkt *, const QString );
+	bool getext( Ufkt *, const TQString );
 	
 	/// Send a function to an other instance of Kmplot. Returns true if it success, otherwise false
-	bool sendFunction(int id, const QString &dcopclient_target="");
+	bool sendFunction(int id, const TQString &dcopclient_target="");
 	
 	/// Functions for the DCOP interface:
 
 	/// Returns a list with all functions
-	QStringList listFunctionNames();
+	TQStringList listFunctionNames();
 
 	/// Returns true if the graph is visible, otherwise false.
 	bool functionFVisible(uint id);
@@ -89,19 +89,19 @@ public:
 	bool setFunctionIntVisible(bool visible, uint id);
 	
 	/// Returns the function expression, or an empty string if the function couldn't be found
-	QString functionStr(uint id);
+	TQString functionStr(uint id);
 	/// Returns the complete function string including the extensions of a function, or an empty string if the function couldn't be found
 	
 	/// Get the color of a graph
-	QColor functionFColor(uint id);
-	QColor functionF1Color(uint id);
-	QColor functionF2Color(uint id);
-	QColor functionIntColor(uint id);
+	TQColor functionFColor(uint id);
+	TQColor functionF1Color(uint id);
+	TQColor functionF2Color(uint id);
+	TQColor functionIntColor(uint id);
 	/// Set the color of a graph. Returns true if it succeeds, otherwise false.
-	bool setFunctionFColor(const QColor &color, uint id);
-	bool setFunctionF1Color(const QColor &color, uint id);
-	bool setFunctionF2Color(const QColor &color, uint id);
-	bool setFunctionIntColor(const QColor &color, uint id);
+	bool setFunctionFColor(const TQColor &color, uint id);
+	bool setFunctionF1Color(const TQColor &color, uint id);
+	bool setFunctionF2Color(const TQColor &color, uint id);
+	bool setFunctionIntColor(const TQColor &color, uint id);
 	
 	/// Get the line width of a graph
 	int functionFLineWidth(uint id);
@@ -115,30 +115,30 @@ public:
 	bool setFunctionIntLineWidth(int linewidth, uint id);
 		
 	/// Returns the function's parameter list
-	QStringList functionParameterList(uint id);
-	bool functionAddParameter(const QString &new_parameter, uint id);
-	bool functionRemoveParameter(const QString &remove_parameter, uint id);
-	int addFunction(const QString &f_str);
-	bool addFunction(const QString &extstr, bool f_mode, bool f1_mode, bool f2_mode, bool integral_mode, bool integral_use_precision, int linewidth, int f1_linewidth, int f2_linewidth, int integral_linewidth, const QString &str_dmin, const QString &str_dmax, const QString &str_startx, const QString &str_starty, double integral_precision, QRgb color, QRgb f1_color, QRgb f2_color, QRgb integral_color, QStringList str_parameter, int use_slider);
-	bool setFunctionExpression(const QString &f_str, uint id);
+	TQStringList functionParameterList(uint id);
+	bool functionAddParameter(const TQString &new_parameter, uint id);
+	bool functionRemoveParameter(const TQString &remove_parameter, uint id);
+	int addFunction(const TQString &f_str);
+	bool addFunction(const TQString &extstr, bool f_mode, bool f1_mode, bool f2_mode, bool integral_mode, bool integral_use_precision, int linewidth, int f1_linewidth, int f2_linewidth, int integral_linewidth, const TQString &str_dmin, const TQString &str_dmax, const TQString &str_startx, const TQString &str_starty, double integral_precision, QRgb color, QRgb f1_color, QRgb f2_color, QRgb integral_color, TQStringList str_parameter, int use_slider);
+	bool setFunctionExpression(const TQString &f_str, uint id);
 	
 	/// Get the min and max value of a graph
-	QString functionMinValue(uint id);
-	QString functionMaxValue(uint id);
+	TQString functionMinValue(uint id);
+	TQString functionMaxValue(uint id);
 	/// Set the min and max values of a graph. Returns true if it succeeds, otherwise false.
-	bool setFunctionMinValue(const QString &min, uint id);
-	bool setFunctionMaxValue(const QString &max, uint id);
+	bool setFunctionMinValue(const TQString &min, uint id);
+	bool setFunctionMaxValue(const TQString &max, uint id);
 	
 	/// Get the startx and starty value of a graph
-	QString functionStartXValue(uint id);
-	QString functionStartYValue(uint id);
+	TQString functionStartXValue(uint id);
+	TQString functionStartYValue(uint id);
 	/// Set the startx and starty values of a graph. Returns true if it succeeds, otherwise false.
-	bool setFunctionStartXValue(const QString &x, uint id);
-	bool setFunctionStartYValue(const QString &y, uint id);
+	bool setFunctionStartXValue(const TQString &x, uint id);
+	bool setFunctionStartYValue(const TQString &y, uint id);
 private:
         
 	/// finds a free function name 
-	void findFunctionName(QString &, int const, int const);
+	void findFunctionName(TQString &, int const, int const);
 	/// indicates if the widget is changed
 	bool &m_modified;
 };