Allow kdelibs to function correctly with TQt for Qt4

git-svn-id: svn://anonsvn.kde.org/home/kde/branches/trinity/kdelibs@1220926 283d02a7-25f6-0310-bc7c-ecb5cbfe19da

26 files changed, 120 insertions, 114 deletions

diff --git a/kdecore/kapplication.cpp b/kdecore/kapplication.cpp
index 3b6b78367..ddbfd4a05 100644
--- a/kdecore/kapplication.cpp
+++ b/kdecore/kapplication.cpp
@@ -850,7 +850,7 @@ void KApplication::init(bool GUIenabled)
   //   kdialog itself.
   // * Don't warn if we run with a read-only $HOME
   TQCString readOnly = getenv("KDE_HOME_READONLY");
-  if (readOnly.isEmpty() && (qstrcmp(name(), "kdialog") != 0))
+  if (readOnly.isEmpty() && (tqstrcmp(name(), "kdialog") != 0))
   {
     KConfigGroupSaver saver(config, "KDE Action Restrictions");
     if (config->readBoolEntry("warn_unwritable_config",true))
diff --git a/kdecore/kcalendarsystem.cpp b/kdecore/kcalendarsystem.cpp
index 57898da84..782b272e7 100644
--- a/kdecore/kcalendarsystem.cpp
+++ b/kdecore/kcalendarsystem.cpp
@@ -90,10 +90,10 @@ static int stringToInteger(const TQString & sNum, int & iLength)
   unsigned int iPos = 0;
 
   int result = 0;
-  for (; sNum.length() > iPos && sNum.at(iPos).isDigit(); iPos++)
+  for (; sNum.length() > iPos && sNum.tqat(iPos).isDigit(); iPos++)
     {
       result *= 10;
-      result += sNum.at(iPos).digitValue();
+      result += sNum.tqat(iPos).digitValue();
     }
 
   iLength = iPos;
diff --git a/kdecore/kclipboard.cpp b/kdecore/kclipboard.cpp
index 244b43541..03a4f916f 100644
--- a/kdecore/kclipboard.cpp
+++ b/kdecore/kclipboard.cpp
@@ -67,7 +67,7 @@ public:
 
     virtual const char *format( int i ) const {
         if ( i < (int) m_formats.count() )
-            return m_formats.at( i );
+            return m_formats.tqat( i );
         else
             return 0L;
     }
@@ -78,7 +78,7 @@ public:
     {
         int index = m_formats.tqfind( format );
         if ( index > -1 )
-            return *(m_data.at( index ));
+            return *(m_data.tqat( index ));
 
         return TQByteArray();
     }
diff --git a/kdecore/kclipboard.h b/kdecore/kclipboard.h
index aecfccf52..9432d70aa 100644
--- a/kdecore/kclipboard.h
+++ b/kdecore/kclipboard.h
@@ -103,7 +103,7 @@ private:
     KClipboardSynchronizer( TQObject *parent = 0, const char *name = 0L );
     void setupSignals();
 
-    static void setClipboard( TQMimeSource* data, QClipboard::Mode mode );
+    static void setClipboard( TQMimeSource* data, TQClipboard::Mode mode );
 
     static KClipboardSynchronizer *s_self;
     static bool s_sync;
diff --git a/kdecore/kcmdlineargs.cpp b/kdecore/kcmdlineargs.cpp
index 7219163a8..93da1470b 100644
--- a/kdecore/kcmdlineargs.cpp
+++ b/kdecore/kcmdlineargs.cpp
@@ -1239,7 +1239,7 @@ KCmdLineArgs::arg(int n) const
       exit(255);
    }
 
-   return parsedArgList->at(n);
+   return parsedArgList->tqat(n);
 }
 
 KURL
diff --git a/kdecore/kcompletion.cpp b/kdecore/kcompletion.cpp
index 2876e9138..ce2f3c3b5 100644
--- a/kdecore/kcompletion.cpp
+++ b/kdecore/kcompletion.cpp
@@ -127,7 +127,7 @@ void KCompletion::addItem( const TQString& item, uint weight )
     // nodes.
 
     for ( uint i = 0; i < len; i++ ) {
-        node = node->insert( item.at(i), sorted );
+        node = node->insert( item.tqat(i), sorted );
         if ( weighted )
             node->confirm( weight -1 ); // node->insert() sets weighting to 1
     }
@@ -419,7 +419,7 @@ TQString KCompletion::findCompletion( const TQString& string )
 
     // start at the tree-root and try to find the search-string
     for( uint i = 0; i < string.length(); i++ ) {
-        ch = string.at( i );
+        ch = string.tqat( i );
         node = node->find( ch );
 
         if ( node )
@@ -508,7 +508,7 @@ void KCompletion::findAllCompletions(const TQString& string,
 
     // start at the tree-root and try to find the search-string
     for( uint i = 0; i < string.length(); i++ ) {
-        ch = string.at( i );
+        ch = string.tqat( i );
         node = node->find( ch );
 
         if ( node )
@@ -595,7 +595,7 @@ void KCompletion::extractStringsFromNodeCI( const KCompTreeNode *node,
         return;
     }
 
-    TQChar ch1 = restString.at(0);
+    TQChar ch1 = restString.tqat(0);
     TQString newRest = restString.mid(1);
     KCompTreeNode *child1, *child2;
 
@@ -725,7 +725,7 @@ void KCompTreeNode::remove( const TQString& str )
     uint i = 0;
     for ( ; i < string.length(); i++ )
     {
-        child = parent->find( string.at( i ) );
+        child = parent->find( string.tqat( i ) );
         if ( child )
             deletables.insert( i + 1, child );
         else
@@ -736,8 +736,8 @@ void KCompTreeNode::remove( const TQString& str )
 
     for ( ; i >= 1; i-- )
     {
-        parent = deletables.at( i - 1 );
-        child = deletables.at( i );
+        parent = deletables.tqat( i - 1 );
+        child = deletables.tqat( i );
         if ( child->myChildren.count() == 0 )
             delete parent->myChildren.remove( child );
     }
@@ -874,7 +874,7 @@ KCompTreeNode *KCompTreeNodeList::remove(KCompTreeNode *item)
     return item;
 }
 
-KCompTreeNode *KCompTreeNodeList::at(uint index) const
+KCompTreeNode *KCompTreeNodeList::tqat(uint index) const
 {
     KCompTreeNode *cur = first;
     while (index-- && cur) cur = cur->next;
diff --git a/kdecore/kcompletion_private.h b/kdecore/kcompletion_private.h
index f4363ae95..1ce613faa 100644
--- a/kdecore/kcompletion_private.h
+++ b/kdecore/kcompletion_private.h
@@ -38,7 +38,7 @@ public:
     KCompTreeNode *begin() const { return first; }
     KCompTreeNode *end() const { return last; }
 
-    KCompTreeNode *at(uint index) const;
+    KCompTreeNode *tqat(uint index) const;
     void append(KCompTreeNode *item); 
     void prepend(KCompTreeNode *item); 
     void insert(KCompTreeNode *after, KCompTreeNode *item);
@@ -119,7 +119,7 @@ public:
 	return &myChildren;
     }
     inline const KCompTreeNode * tqchildAt(int index) const {
-	return myChildren.at(index);
+	return myChildren.tqat(index);
     }
     inline const KCompTreeNode * firstChild() const {
 	return myChildren.begin();
diff --git a/kdecore/kconfigbackend.cpp b/kdecore/kconfigbackend.cpp
index 192ef9b20..4fc63ebe6 100644
--- a/kdecore/kconfigbackend.cpp
+++ b/kdecore/kconfigbackend.cpp
@@ -496,7 +496,7 @@ qWarning("SIGBUS while reading %s", rFile.name().latin1());
    else
 #endif
    {
-      rFile.at(0);
+      rFile.tqat(0);
       data = rFile.readAll();
       s = data.data();
       eof = s + data.size();
diff --git a/kdecore/kconfigbase.cpp b/kdecore/kconfigbase.cpp
index 8319e3aa1..0b35f91e0 100644
--- a/kdecore/kconfigbase.cpp
+++ b/kdecore/kconfigbase.cpp
@@ -969,7 +969,7 @@ TQColor KConfigBase::readColorEntry( const char *pKey,
   TQString aValue = readEntry( pKey );
   if( !aValue.isEmpty() )
     {
-      if ( aValue.at(0) == (QChar)'#' )
+      if ( aValue.tqat(0) == (QChar)'#' )
         {
           aRetColor.setNamedColor(aValue);
         }
@@ -1040,10 +1040,10 @@ TQDateTime KConfigBase::readDateTimeEntry( const char *pKey,
   TQStrList list;
   int count = readListEntry( pKey, list, ',' );
   if( count == 6 ) {
-    TQDate date( atoi( list.at( 0 ) ), atoi( list.at( 1 ) ),
-                atoi( list.at( 2 ) ) );
-    TQTime time( atoi( list.at( 3 ) ), atoi( list.at( 4 ) ),
-                atoi( list.at( 5 ) ) );
+    TQDate date( atoi( list.tqat( 0 ) ), atoi( list.tqat( 1 ) ),
+                atoi( list.tqat( 2 ) ) );
+    TQTime time( atoi( list.tqat( 3 ) ), atoi( list.tqat( 4 ) ),
+                atoi( list.tqat( 5 ) ) );
 
     return TQDateTime( date, time );
   }
@@ -1424,7 +1424,7 @@ void KConfigBase::writeEntry ( const char *pKey, const TQStrList &list,
         }
       str_list += sep;
     }
-  if( str_list.at(str_list.length() - 1) == (QChar)sep )
+  if( str_list.tqat(str_list.length() - 1) == (QChar)sep )
     str_list.truncate( str_list.length() -1 );
   writeEntry( pKey, str_list, bPersistent, bGlobal, bNLS );
 }
@@ -1468,7 +1468,7 @@ void KConfigBase::writeEntry ( const char *pKey, const TQStringList &list,
         }
       str_list += sep;
     }
-  if( str_list.at(str_list.length() - 1) == (QChar)sep )
+  if( str_list.tqat(str_list.length() - 1) == (QChar)sep )
     str_list.truncate( str_list.length() -1 );
   writeEntry( pKey, str_list, bPersistent, bGlobal, bNLS, bExpand );
 }
diff --git a/kdecore/kdebug.cpp b/kdecore/kdebug.cpp
index b76444b3c..75f2864f9 100644
--- a/kdecore/kdebug.cpp
+++ b/kdecore/kdebug.cpp
@@ -415,7 +415,7 @@ kdbgstream& kdbgstream::operator << (const TQWidget* widget)
       return *this;
     }
   output += string;
-  if (output.at(output.length() -1 ) == (QChar)'\n')
+  if (output.tqat(output.length() -1 ) == (QChar)'\n')
     {
       flush();
     }
diff --git a/kdecore/kdebug.h b/kdecore/kdebug.h
index 8e749b24d..0a7d2546f 100644
--- a/kdecore/kdebug.h
+++ b/kdecore/kdebug.h
@@ -216,7 +216,7 @@ class KDECORE_EXPORT kdbgstream {
     kdbgstream &operator<<(const TQString& string) {
 	if (!print) return *this;
 	output += string;
-	if (output.at(output.length() -1 ) == (QChar)'\n')
+	if (output.tqat(output.length() -1 ) == (QChar)'\n')
 	    flush();
 	return *this;
     }
@@ -228,7 +228,7 @@ class KDECORE_EXPORT kdbgstream {
     kdbgstream &operator<<(const char *string) {
 	if (!print) return *this;
 	output += TQString::fromUtf8(string);
-	if (output.at(output.length() - 1) == (QChar)'\n')
+	if (output.tqat(output.length() - 1) == (QChar)'\n')
 	    flush();
 	return *this;
     }
diff --git a/kdecore/kkeyserver_x11.cpp b/kdecore/kkeyserver_x11.cpp
index 8263d2735..65e0e7215 100644
--- a/kdecore/kkeyserver_x11.cpp
+++ b/kdecore/kkeyserver_x11.cpp
@@ -671,7 +671,7 @@ bool modXToModQt( uint modX, int& modQt )
 	return modToModQt( modX, modQt );
 }
 
-KDECORE_EXPORT int qtButtonStateToMod( Qt::ButtonState s )
+KDECORE_EXPORT int qtButtonStateToMod( TQt::ButtonState s )
 {
 	int modQt = 0;
 	if (s & Qt::ShiftButton) modQt |= KKey::SHIFT;
diff --git a/kdecore/klibloader.cpp b/kdecore/klibloader.cpp
index 80c5e6377..3af226886 100644
--- a/kdecore/klibloader.cpp
+++ b/kdecore/klibloader.cpp
@@ -549,17 +549,17 @@ void KLibLoader::close_pending(KLibWrapPrivate *wrap)
          We need to make sure to clear the clipboard before unloading a DSO
          because the DSO could have defined an object derived from QMimeSource
          and placed that on the clipboard. */
-      /*kapp->clipboard()->clear();*/
+      /*kapp->tqclipboard()->clear();*/
 
       /* Well.. let's do something more subtle... convert the clipboard context
          to text. That should be safe as it only uses objects defined by Qt. */
-      if( kapp->clipboard()->ownsSelection()) {
-	kapp->clipboard()->setText(
-            kapp->clipboard()->text( QClipboard::Selection ), QClipboard::Selection );
+      if( kapp->tqclipboard()->ownsSelection()) {
+	kapp->tqclipboard()->setText(
+            kapp->tqclipboard()->text( TQClipboard::Selection ), TQClipboard::Selection );
       }
-      if( kapp->clipboard()->ownsClipboard()) {
-	kapp->clipboard()->setText(
-            kapp->clipboard()->text( QClipboard::Clipboard ), QClipboard::Clipboard );
+      if( kapp->tqclipboard()->ownsClipboard()) {
+	kapp->tqclipboard()->setText(
+            kapp->tqclipboard()->text( TQClipboard::Clipboard ), TQClipboard::Clipboard );
       }
     }
 
diff --git a/kdecore/klocale.cpp b/kdecore/klocale.cpp
index 567c9a7f5..f9de79b52 100644
--- a/kdecore/klocale.cpp
+++ b/kdecore/klocale.cpp
@@ -1103,7 +1103,7 @@ KLocale::SignPosition KLocale::negativeMonetarySignPosition() const
 static inline void put_it_in( TQChar *buffer, uint& index, const TQString &s )
 {
   for ( uint l = 0; l < s.length(); l++ )
-    buffer[index++] = s.at( l );
+    buffer[index++] = s.tqat( l );
 }
 
 static inline void put_it_in( TQChar *buffer, uint& index, int number )
@@ -1352,14 +1352,14 @@ TQString KLocale::formatDate(const TQDate &pDate, bool shortFormat) const
     {
       if ( !escape )
 	{
-	  if ( (TQChar(rst.at( format_index )).tqunicode()) == '%' )
+	  if ( (TQChar(rst.tqat( format_index )).tqunicode()) == '%' )
 	    escape = true;
 	  else
-	    buffer.append(rst.at(format_index));
+	    buffer.append(rst.tqat(format_index));
 	}
       else
 	{
-	  switch ( TQChar(rst.at( format_index )).tqunicode() )
+	  switch ( TQChar(rst.tqat( format_index )).tqunicode() )
 	    {
 	    case '%':
 	      buffer.append('%');
@@ -1401,7 +1401,7 @@ TQString KLocale::formatDate(const TQDate &pDate, bool shortFormat) const
 	      buffer.append(calendar()->weekDayName(pDate, false));
 	      break;
 	    default:
-	      buffer.append(rst.at(format_index));
+	      buffer.append(rst.tqat(format_index));
 	      break;
 	    }
 	  escape = false;
@@ -1583,12 +1583,12 @@ double KLocale::readMoney(const TQString &_str, bool * ok) const
  */
 static int readInt(const TQString &str, uint &pos)
 {
-  if (!str.at(pos).isDigit()) return -1;
+  if (!str.tqat(pos).isDigit()) return -1;
   int result = 0;
-  for (; str.length() > pos && str.at(pos).isDigit(); pos++)
+  for (; str.length() > pos && str.tqat(pos).isDigit(); pos++)
     {
       result *= 10;
-      result += str.at(pos).digitValue();
+      result += str.tqat(pos).digitValue();
     }
 
   return result;
@@ -1625,22 +1625,22 @@ TQDate KLocale::readDate(const TQString &intstr, const TQString &fmt, bool* ok)
   while (fmt.length() > fmtpos && str.length() > strpos && !error)
   {
 
-    TQChar c = fmt.at(fmtpos++);
+    TQChar c = fmt.tqat(fmtpos++);
 
     if (c != (QChar)'%') {
-      if (c.isSpace() && str.at(strpos).isSpace())
+      if (c.isSpace() && str.tqat(strpos).isSpace())
         strpos++;
-      else if (c != str.at(strpos++))
+      else if (c != str.tqat(strpos++))
         error = true;
     }
     else
     {
       int j;
       // remove space at the beginning
-      if (str.length() > strpos && str.at(strpos).isSpace())
+      if (str.length() > strpos && str.tqat(strpos).isSpace())
         strpos++;
 
-      c = fmt.at(fmtpos++);
+      c = fmt.tqat(fmtpos++);
       switch (c)
       {
 	case 'a':
@@ -1765,22 +1765,22 @@ TQTime KLocale::readTime(const TQString &intstr, ReadTimeFlags flags, bool *ok)
     {
       if ( !(Format.length() > Formatpos && str.length() > strpos) ) goto error;
 
-      TQChar c = Format.at(Formatpos++);
+      TQChar c = Format.tqat(Formatpos++);
 
       if (c != (QChar)'%')
 	{
 	  if (c.isSpace())
 	    strpos++;
-	  else if (c != str.at(strpos++))
+	  else if (c != str.tqat(strpos++))
 	    goto error;
 	  continue;
 	}
 
       // remove space at the beginning
-      if (str.length() > strpos && str.at(strpos).isSpace())
+      if (str.length() > strpos && str.tqat(strpos).isSpace())
 	strpos++;
 
-      c = Format.at(Formatpos++);
+      c = Format.tqat(Formatpos++);
       switch (c)
 	{
 	case 'p':
@@ -1876,14 +1876,14 @@ TQString KLocale::formatTime(const TQTime &pTime, bool includeSecs, bool isDurat
     {
       if ( !escape )
 	{
-	  if ( (TQChar(rst.at( format_index )).tqunicode()) == '%' )
+	  if ( (TQChar(rst.tqat( format_index )).tqunicode()) == '%' )
 	    escape = true;
 	  else
-	    buffer[index++] = rst.at( format_index );
+	    buffer[index++] = rst.tqat( format_index );
 	}
       else
 	{
-	  switch ( TQChar(rst.at( format_index )).tqunicode() )
+	  switch ( TQChar(rst.tqat( format_index )).tqunicode() )
 	    {
 	    case '%':
 	      buffer[index++] = (QChar)'%';
@@ -1915,7 +1915,7 @@ TQString KLocale::formatTime(const TQTime &pTime, bool includeSecs, bool isDurat
 	      number = pTime.hour();
 	    case 'l':
 	      // to share the code
-	      if ( (TQChar(rst.at( format_index )).tqunicode()) == 'l' )
+	      if ( (TQChar(rst.tqat( format_index )).tqunicode()) == 'l' )
 		number = isDuration ? pTime.hour() : (pTime.hour() + 11) % 12 + 1;
 	      if ( number / 10 )
 		buffer[index++] = number / 10 + '0';
@@ -1932,7 +1932,7 @@ TQString KLocale::formatTime(const TQTime &pTime, bool includeSecs, bool isDurat
 	      }
 	      break;
 	    default:
-	      buffer[index++] = rst.at( format_index );
+	      buffer[index++] = rst.tqat( format_index );
 	      break;
 	    }
 	  escape = false;
diff --git a/kdecore/kpalette.cpp b/kdecore/kpalette.cpp
index 1a828fe4d..f07ac4228 100644
--- a/kdecore/kpalette.cpp
+++ b/kdecore/kpalette.cpp
@@ -176,7 +176,7 @@ KPalette::color(int index)
   if ((index < 0) || (index >= nrColors()))
 	return TQColor();
 
-  kolor *node = mKolorList.at(index);
+  kolor *node = mKolorList.tqat(index);
   if (!node)
 	return TQColor();
 
@@ -202,7 +202,7 @@ KPalette::colorName(int index)
   if ((index < 0) || (index >= nrColors()))
 	return TQString::null;
 
-  kolor *node = mKolorList.at(index);
+  kolor *node = mKolorList.tqat(index);
   if (!node)
 	return TQString::null;
 
@@ -227,7 +227,7 @@ KPalette::changeColor(int index,
   if ((index < 0) || (index >= nrColors()))
 	return -1;
 
-  kolor *node = mKolorList.at(index);
+  kolor *node = mKolorList.tqat(index);
   if (!node)
 	return -1;
 
diff --git a/kdecore/krfcdate.cpp b/kdecore/krfcdate.cpp
index ebb12aa62..9d7c0b7ab 100644
--- a/kdecore/krfcdate.cpp
+++ b/kdecore/krfcdate.cpp
@@ -394,7 +394,7 @@ KRFCDate::parseDateISO8601( const TQString& input_ )
   mday   = l[2].toUInt();
 
   // Z suffix means UTC.
-  if ((QChar)'Z' == timeString.at(timeString.length() - 1)) {
+  if ((QChar)'Z' == timeString.tqat(timeString.length() - 1)) {
     timeString.remove(timeString.length() - 1, 1);
   }
 
diff --git a/kdecore/kstandarddirs.cpp b/kdecore/kstandarddirs.cpp
index 91a178a53..46939d032 100644
--- a/kdecore/kstandarddirs.cpp
+++ b/kdecore/kstandarddirs.cpp
@@ -189,7 +189,7 @@ void KStandardDirs::addPrefix( const TQString& _dir, bool priority )
 	return;
 
     TQString dir = _dir;
-    if (dir.at(dir.length() - 1) != QChar('/'))
+    if (dir.tqat(dir.length() - 1) != QChar('/'))
 	dir += QChar('/');
 
     if (!prefixes.tqcontains(dir)) {
@@ -209,7 +209,7 @@ void KStandardDirs::addXdgConfigPrefix( const TQString& _dir, bool priority )
 	return;
 
     TQString dir = _dir;
-    if (dir.at(dir.length() - 1) != QChar('/'))
+    if (dir.tqat(dir.length() - 1) != QChar('/'))
 	dir += QChar('/');
 
     if (!d->xdgconf_prefixes.tqcontains(dir)) {
@@ -229,7 +229,7 @@ void KStandardDirs::addXdgDataPrefix( const TQString& _dir, bool priority )
 	return;
 
     TQString dir = _dir;
-    if (dir.at(dir.length() - 1) != QChar('/'))
+    if (dir.tqat(dir.length() - 1) != QChar('/'))
 	dir += QChar('/');
 
     if (!d->xdgdata_prefixes.tqcontains(dir)) {
@@ -271,7 +271,7 @@ bool KStandardDirs::addResourceType( const char *type,
 	relatives.insert(type, rels);
     }
     TQString copy = relativename;
-    if (copy.at(copy.length() - 1) != QChar('/'))
+    if (copy.tqat(copy.length() - 1) != QChar('/'))
 	copy += QChar('/');
     if (!rels->tqcontains(copy)) {
         if (priority)
@@ -301,7 +301,7 @@ bool KStandardDirs::addResourceDir( const char *type,
 	absolutes.insert(type, paths);
     }
     TQString copy = absdir;
-    if (copy.at(copy.length() - 1) != QChar('/'))
+    if (copy.tqat(copy.length() - 1) != QChar('/'))
       copy += QChar('/');
 
     if (!paths->tqcontains(copy)) {
@@ -452,7 +452,7 @@ bool KStandardDirs::exists(const TQString &fullPath)
 {
     KDE_struct_stat buff;
     if (access(TQFile::encodeName(fullPath), R_OK) == 0 && KDE_stat( TQFile::encodeName(fullPath), &buff ) == 0)
-	if (fullPath.at(fullPath.length() - 1) != QChar('/')) {
+	if (fullPath.tqat(fullPath.length() - 1) != QChar('/')) {
 	    if (S_ISREG( buff.st_mode ))
 		return true;
 	} else
@@ -478,9 +478,9 @@ static void lookupDirectory(const TQString& path, const TQString &relPart,
       return;
 
 #ifdef Q_WS_WIN
-    assert(path.at(path.length() - 1) == QChar('/') || path.at(path.length() - 1) == QChar('\\'));
+    assert(path.tqat(path.length() - 1) == QChar('/') || path.tqat(path.length() - 1) == QChar('\\'));
 #else
-    assert(path.at(path.length() - 1) == QChar('/'));
+    assert(path.tqat(path.length() - 1) == QChar('/'));
 #endif
 
     struct dirent *ep;
@@ -492,7 +492,7 @@ static void lookupDirectory(const TQString& path, const TQString &relPart,
     while( ( ep = readdir( dp ) ) != 0L )
     {
       TQString fn( TQFile::decodeName(ep->d_name));
-      if (fn == _dot || fn == _dotdot || TQChar(fn.at(fn.length() - 1)).latin1() == TQChar('~').latin1())
+      if (fn == _dot || fn == _dotdot || TQChar(fn.tqat(fn.length() - 1)).latin1() == TQChar('~').latin1())
 	continue;
 
       if (!recursive && !regexp.exactMatch(fn))
@@ -569,9 +569,9 @@ static void lookupPrefix(const TQString& prefix, const TQString& relpath,
     if (prefix.isEmpty()) //for sanity
       return;
 #ifdef Q_WS_WIN
-    assert(prefix.at(prefix.length() - 1) == QChar('/') || prefix.at(prefix.length() - 1) == QChar('\\'));
+    assert(prefix.tqat(prefix.length() - 1) == QChar('/') || prefix.tqat(prefix.length() - 1) == QChar('\\'));
 #else
-    assert(prefix.at(prefix.length() - 1) == QChar('/'));
+    assert(prefix.tqat(prefix.length() - 1) == QChar('/'));
 #endif
     KDE_struct_stat buff;
 
@@ -591,7 +591,7 @@ static void lookupPrefix(const TQString& prefix, const TQString& relpath,
 	while( ( ep = readdir( dp ) ) != 0L )
 	    {
 		TQString fn( TQFile::decodeName(ep->d_name));
-		if (fn == _dot || fn == _dotdot || fn.at(fn.length() - 1) == QChar('~'))
+		if (fn == _dot || fn == _dotdot || fn.tqat(fn.length() - 1) == QChar('~'))
 		    continue;
 
 		if ( !pathExp.exactMatch(fn) )
@@ -1176,7 +1176,7 @@ bool KStandardDirs::makeDir(const TQString& dir, int mode)
     uint len = target.length();
 
     // append trailing slash if missing
-    if (dir.at(len - 1) != QChar('/'))
+    if (dir.tqat(len - 1) != QChar('/'))
         target += QChar('/');
 
     TQString base("");
diff --git a/kdecore/kstringhandler.cpp b/kdecore/kstringhandler.cpp
index e37d1a3ce..e309ea6f0 100644
--- a/kdecore/kstringhandler.cpp
+++ b/kdecore/kstringhandler.cpp
@@ -62,7 +62,7 @@ TQString KStringHandler::word( const TQString &text , const char *range )
     // Extract words
     //
     int wordsToExtract = cnt-pos+1;
-    TQStringList::Iterator it = list.at( pos);
+    TQStringList::Iterator it = list.tqat( pos);
 
     while ( (it != list.end()) && (wordsToExtract-- > 0))
     {
@@ -91,7 +91,7 @@ TQString KStringHandler::insword( const TQString &text , const TQString &word ,
     if ( pos >= list.count() )
         list.append( word );
     else
-        list.insert( list.at(pos) , word );
+        list.insert( list.tqat(pos) , word );
 
     // Rejoin
     return list.join( " " );
@@ -112,7 +112,7 @@ TQString KStringHandler::setword( const TQString &text , const TQString &word ,
         list.append( word );
     else
     {
-        list.insert( list.remove( list.at(pos) ) , word );
+        list.insert( list.remove( list.tqat(pos) ) , word );
     }
 
     // Rejoin
@@ -140,7 +140,7 @@ TQString KStringHandler::remrange( const TQString &text , const char *range )
     // Remove that range of words
     //
     int wordsToDelete = cnt-pos+1;
-    TQStringList::Iterator it = list.at( pos);
+    TQStringList::Iterator it = list.tqat( pos);
 
     while ( (it != list.end()) && (wordsToDelete-- > 0))
        it = list.remove( it );
@@ -159,7 +159,7 @@ TQString KStringHandler::remword( const TQString &text , uint pos )
     TQStringList list = TQStringList::split( " ", text, true );
 
     if ( pos < list.count() )
-        list.remove( list.at( pos ) );
+        list.remove( list.tqat( pos ) );
 
     // Rejoin
     return list.join( " " );
diff --git a/kdecore/ksycoca.cpp b/kdecore/ksycoca.cpp
index 255763ef0..0846c5c95 100644
--- a/kdecore/ksycoca.cpp
+++ b/kdecore/ksycoca.cpp
@@ -177,7 +177,8 @@ bool KSycoca::openDatabase( bool openDummyIfNotFound )
      {
         // We open a dummy database instead.
         //kdDebug(7011) << "No database, opening a dummy one." << endl;
-        TQBuffer *buffer = new TQBuffer( TQByteArray() );
+        TQBuffer *buffer = new TQBuffer();
+        buffer->tqsetBufferFromCopy(TQByteArray());
         buffer->open(IO_ReadWrite);
         m_str = new TQDataStream( buffer);
         (*m_str) << (TQ_INT32) KSYCOCA_VERSION;
@@ -229,7 +230,7 @@ void KSycoca::closeDatabase()
 {
    QIODevice *device = 0;
    if (m_str)
-      device = m_str->device();
+      device = m_str->tqdevice();
 #ifdef HAVE_MMAP
    if (device && m_sycoca_mmap)
    {
@@ -248,6 +249,7 @@ void KSycoca::closeDatabase()
    if (TQT_TQIODEVICE(d->database) != device)
       delete d->database;
    if (m_barray) delete m_barray;
+   m_barray = 0;
    device = 0;
    d->database = 0;
    // It is very important to delete all factories here
@@ -286,7 +288,7 @@ TQDataStream * KSycoca::findEntry(int offset, KSycocaType &type)
    if ( !m_str )
       openDatabase();
    //kdDebug(7011) << TQString("KSycoca::_findEntry(offset=%1)").arg(offset,8,16) << endl;
-   m_str->tqdevice()->at(offset);
+   m_str->tqdevice()->tqat(offset);
    TQ_INT32 aType;
    (*m_str) >> aType;
    type = (KSycocaType) aType;
@@ -304,7 +306,7 @@ bool KSycoca::checkVersion(bool abortOnError)
       // We should never get here... if a database was found then m_str shouldn't be 0L.
       assert(m_str);
    }
-   m_str->tqdevice()->at(0);
+   m_str->tqdevice()->tqat(0);
    TQ_INT32 aVersion;
    (*m_str) >> aVersion;
    if ( aVersion < KSYCOCA_VERSION )
@@ -359,7 +361,7 @@ TQDataStream * KSycoca::findFactory(KSycocaFactoryId id)
       if (aId == id)
       {
          //kdDebug(7011) << TQString("KSycoca::findFactory(%1) offset %2").arg((int)id).arg(aOffset) << endl;
-         m_str->tqdevice()->at(aOffset);
+         m_str->tqdevice()->tqat(aOffset);
          return m_str;
       }
    }
diff --git a/kdecore/ksycocadict.cpp b/kdecore/ksycocadict.cpp
index 76124e76a..11b16b08b 100644
--- a/kdecore/ksycocadict.cpp
+++ b/kdecore/ksycocadict.cpp
@@ -60,7 +60,7 @@ KSycocaDict::KSycocaDict(TQDataStream *str, int offset)
   : d(0), mStr(str), mOffset(offset)
 {
    TQ_UINT32 test1, test2;
-   str->tqdevice()->at(offset);
+   str->tqdevice()->tqat(offset);
    (*str) >> test1 >> test2;
    if ((test1 > 0x000fffff) || (test2 > 1024))
    {
@@ -70,10 +70,10 @@ KSycocaDict::KSycocaDict(TQDataStream *str, int offset)
        return;
    }
 
-   str->tqdevice()->at(offset);
+   str->tqdevice()->tqat(offset);
    (*str) >> mHashTableSize;
    (*str) >> mHashList;
-   mOffset = str->tqdevice()->at(); // Start of hashtable
+   mOffset = str->tqdevice()->tqat(); // Start of hashtable
 }
 
 KSycocaDict::~KSycocaDict()
@@ -131,7 +131,7 @@ KSycocaDict::find_string(const TQString &key )
 
    uint off = mOffset+sizeof(TQ_INT32)*hash;
    //kdDebug(7011) << TQString("off is %1").arg(off,8,16) << endl;
-   mStr->tqdevice()->at( off );
+   mStr->tqdevice()->tqat( off );
 
    TQ_INT32 offset;
    (*mStr) >> offset;
@@ -146,7 +146,7 @@ KSycocaDict::find_string(const TQString &key )
    // Lookup duplicate list.
    offset = -offset;
 
-   mStr->tqdevice()->at(offset);
+   mStr->tqdevice()->tqat(offset);
    //kdDebug(7011) << TQString("Looking up duplicate list at %1").arg(offset,8,16) << endl;
    
    while(true)
@@ -286,7 +286,7 @@ KSycocaDict::save(TQDataStream &str)
       return;
    }
 
-   mOffset = str.tqdevice()->at();
+   mOffset = str.tqdevice()->tqat();
 
    //kdDebug(7011) << TQString("KSycocaDict: %1 entries.").arg(count()) << endl;
 
@@ -402,12 +402,12 @@ KSycocaDict::save(TQDataStream &str)
    str << mHashTableSize;
    str << mHashList;
 
-   mOffset = str.tqdevice()->at(); // mOffset points to start of hashTable
+   mOffset = str.tqdevice()->tqat(); // mOffset points to start of hashTable
    //kdDebug(7011) << TQString("Start of Hash Table, offset = %1").arg(mOffset,8,16) << endl;
 
    for(int pass = 1; pass <= 2; pass++)
    {
-      str.tqdevice()->at(mOffset);
+      str.tqdevice()->tqat(mOffset);
       //kdDebug(7011) << TQString("Writing hash table (pass #%1)").arg(pass) << endl;
       for(uint i=0; i < mHashTableSize; i++)
       {
@@ -421,7 +421,7 @@ KSycocaDict::save(TQDataStream &str)
          str << tmpid;
          //kdDebug(7011) << TQString("Hash table : %1").arg(tmpid,8,16) << endl;
       }
-      //kdDebug(7011) << TQString("End of Hash Table, offset = %1").arg(str.tqdevice()->at(),8,16) << endl;
+      //kdDebug(7011) << TQString("End of Hash Table, offset = %1").arg(str.tqdevice()->tqat(),8,16) << endl;
 
       //kdDebug(7011) << TQString("Writing duplicate lists (pass #%1)").arg(pass) << endl;
       for(uint i=0; i < mHashTableSize; i++)
@@ -429,7 +429,7 @@ KSycocaDict::save(TQDataStream &str)
          if (hashTable[i].duplicates)
          {
             TQPtrList<string_entry> *dups = hashTable[i].duplicates;
-            hashTable[i].duplicate_offset = str.tqdevice()->at();
+            hashTable[i].duplicate_offset = str.tqdevice()->tqat();
 
             /*kdDebug(7011) << TQString("Duplicate lists: Offset = %1 list_size = %2")                           .arg(hashTable[i].duplicate_offset,8,16).arg(dups->count()) << endl;
 */
@@ -441,7 +441,7 @@ KSycocaDict::save(TQDataStream &str)
             str << (TQ_INT32) 0;               // End of list marker (0)
          }
       }
-      //kdDebug(7011) << TQString("End of Dict, offset = %1").arg(str.tqdevice()->at(),8,16) << endl;
+      //kdDebug(7011) << TQString("End of Dict, offset = %1").arg(str.tqdevice()->tqat(),8,16) << endl;
    }
 
    //kdDebug(7011) << "Cleaning up hash table." << endl;
diff --git a/kdecore/ksycocaentry.h b/kdecore/ksycocaentry.h
index 2b4611cc2..1d5f1845a 100644
--- a/kdecore/ksycocaentry.h
+++ b/kdecore/ksycocaentry.h
@@ -101,7 +101,7 @@ public: // KDoc seems to barf on those typedefs and generates no docs after them
     */
    virtual void save(TQDataStream &s)
      {
-       mOffset = s.tqdevice()->at(); // store position in member variable
+       mOffset = s.tqdevice()->tqat(); // store position in member variable
        s << (TQ_INT32) sycocaType() << mPath;
      }
 
diff --git a/kdecore/ksycocafactory.cpp b/kdecore/ksycocafactory.cpp
index 122dd9405..da65619e6 100644
--- a/kdecore/ksycocafactory.cpp
+++ b/kdecore/ksycocafactory.cpp
@@ -46,10 +46,10 @@ KSycocaFactory::KSycocaFactory(KSycocaFactoryId factory_id)
           (*m_str) >> i;
           m_endEntryOffset = i;
 
-          int saveOffset = m_str->tqdevice()->at();
+          int saveOffset = m_str->tqdevice()->tqat();
           // Init index tables
           m_sycocaDict = new KSycocaDict(m_str, m_sycocaDictOffset);   
-          saveOffset = m_str->tqdevice()->at(saveOffset);
+          saveOffset = m_str->tqdevice()->tqat(saveOffset);
       }
    }
    else
@@ -78,7 +78,7 @@ void
 KSycocaFactory::saveHeader(TQDataStream &str)
 {
    // Write header 
-   str.tqdevice()->at(mOffset);
+   str.tqdevice()->tqat(mOffset);
    str << (TQ_INT32) m_sycocaDictOffset;
    str << (TQ_INT32) m_beginEntryOffset;
    str << (TQ_INT32) m_endEntryOffset;
@@ -91,13 +91,13 @@ KSycocaFactory::save(TQDataStream &str)
                              // building database
    if (!m_sycocaDict) return; // Error!
 
-   mOffset = str.tqdevice()->at(); // store position in member variable
+   mOffset = str.tqdevice()->tqat(); // store position in member variable
    m_sycocaDictOffset = 0;
 
    // Write header (pass #1)
    saveHeader(str);
 
-   m_beginEntryOffset = str.tqdevice()->at();
+   m_beginEntryOffset = str.tqdevice()->tqat();
 
    // Write all entries.
    int entryCount = 0;
@@ -110,7 +110,7 @@ KSycocaFactory::save(TQDataStream &str)
       entryCount++;
    }
 
-   m_endEntryOffset = str.tqdevice()->at();
+   m_endEntryOffset = str.tqdevice()->tqat();
 
    // Write indices...
    // Linear index
@@ -124,16 +124,16 @@ KSycocaFactory::save(TQDataStream &str)
    }
 
    // Dictionary index
-   m_sycocaDictOffset = str.tqdevice()->at();      
+   m_sycocaDictOffset = str.tqdevice()->tqat();      
    m_sycocaDict->save(str);
 
-   int endOfFactoryData = str.tqdevice()->at();
+   int endOfFactoryData = str.tqdevice()->tqat();
 
    // Update header (pass #2)
    saveHeader(str);
 
    // Seek to end.
-   str.tqdevice()->at(endOfFactoryData);
+   str.tqdevice()->tqat(endOfFactoryData);
 }
 
 void 
@@ -169,7 +169,7 @@ KSycocaEntry::List KSycocaFactory::allEntries()
 
    // Assume we're NOT building a database
 
-   m_str->tqdevice()->at(m_endEntryOffset);
+   m_str->tqdevice()->tqat(m_endEntryOffset);
    TQ_INT32 entryCount;
    (*m_str) >> entryCount;
    
diff --git a/kdecore/kurl.cpp b/kdecore/kurl.cpp
index 428ab2f20..cc7c3fddb 100644
--- a/kdecore/kurl.cpp
+++ b/kdecore/kurl.cpp
@@ -1687,14 +1687,14 @@ TQString KURL::fileName( bool _strip_trailing_slash ) const
 
   if ( _strip_trailing_slash )
   {
-    while ( len >= 1 && path[ len - 1 ] == (QChar)'/' )
+    while ( len >= 1 && path[ len - 1 ] == TQChar('/') )
       len--;
   }
-  else if ( path[ len - 1 ] == (QChar)'/' )
+  else if ( path[ len - 1 ] == TQChar('/') )
     return fname;
 
   // Does the path only consist of '/' characters ?
-  if ( len == 1 && path[ 0 ] == (QChar)'/' )
+  if ( len == 1 && path[ 0 ] == TQChar('/') )
     return fname;
 
   // Skip last n slashes
@@ -1704,13 +1704,13 @@ TQString KURL::fileName( bool _strip_trailing_slash ) const
      // This is hairy, we need the last unencoded slash.
      // Count in the encoded string how many encoded slashes follow the last
      // unencoded one.
-     int i = m_strPath_encoded.tqfindRev( (QChar)'/', len - 1 );
+     int i = m_strPath_encoded.tqfindRev( TQChar('/'), len - 1 );
      TQString fileName_encoded = m_strPath_encoded.mid(i+1);
      n += fileName_encoded.tqcontains("%2f", false);
   }
   int i = len;
   do {
-    i = path.tqfindRev( (QChar)'/', i - 1 );
+    i = path.tqfindRev( TQChar('/'), i - 1 );
   }
   while (--n && (i > 0));
 
diff --git a/kdecore/network/ksrvresolverworker.cpp b/kdecore/network/ksrvresolverworker.cpp
index c1df59bde..e217507f3 100644
--- a/kdecore/network/ksrvresolverworker.cpp
+++ b/kdecore/network/ksrvresolverworker.cpp
@@ -85,7 +85,7 @@ bool KSrvResolverWorker::preprocess()
 	return false;
 
       protoname = "_";
-      protoname += names.at(0);
+      protoname += names.tqat(0);
     }
   else if (sockettype == SOCK_STREAM || sockettype == 0)
     protoname = "_tcp";
diff --git a/kdecore/svgicons/ksvgiconengine.cpp b/kdecore/svgicons/ksvgiconengine.cpp
index faca9d967..2dcd1c226 100644
--- a/kdecore/svgicons/ksvgiconengine.cpp
+++ b/kdecore/svgicons/ksvgiconengine.cpp
@@ -202,7 +202,11 @@ public:
 		TQWMatrix matrix = m_engine->painter()->parseTransform(transform);
 
 		TQWMatrix *current = m_engine->painter()->tqworldMatrix();
+#ifdef USE_QT4
+printf("[FIXME] *current = matrix * *current locks up under Qt4; bypassing for now\n\r");
+#else // USE_QT4
 		*current = matrix * *current;
+#endif // USE_QT4
 	}
 
 	void parseCommonAttributes(TQDomNode &node)
diff --git a/kdecore/tests/kurltest.cpp b/kdecore/tests/kurltest.cpp
index e80561d2c..c8e5bcced 100644
--- a/kdecore/tests/kurltest.cpp
+++ b/kdecore/tests/kurltest.cpp
@@ -384,7 +384,7 @@ int main(int argc, char *argv[])
   check("KURL::setFileName()", u2.url(), "file:///home/dfaure/myotherfile.txt");
   // more tricky, renaming a directory (kpropsdlg.cc, line ~ 238)
       TQString tmpurl = "file:/home/dfaure/myolddir/";
-      if ( tmpurl.at(tmpurl.length() - 1) == '/')
+      if ( tmpurl.tqat(tmpurl.length() - 1) == '/')
           // It's a directory, so strip the trailing slash first
           tmpurl.truncate( tmpurl.length() - 1);
       KURL newUrl = tmpurl;