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diff --git a/kwin/main.cpp b/kwin/main.cpp
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+/*****************************************************************
+ KWin - the KDE window manager
+ This file is part of the KDE project.
+
+Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
+Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
+
+You can Freely distribute this program under the GNU General Public
+License. See the file "COPYING" for the exact licensing terms.
+******************************************************************/
+
+//#define QT_CLEAN_NAMESPACE
+#include <kconfig.h>
+
+#include "main.h"
+
+#include <klocale.h>
+#include <kglobal.h>
+#include <kdebug.h>
+#include <stdlib.h>
+#include <kcmdlineargs.h>
+#include <kaboutdata.h>
+#include <dcopclient.h>
+#include <dcopref.h>
+#include <unistd.h>
+#include <signal.h>
+#include <fcntl.h>
+
+#include "atoms.h"
+#include "options.h"
+#include "sm.h"
+
+#define INT8 _X11INT8
+#define INT32 _X11INT32
+#include <X11/Xproto.h>
+#undef INT8
+#undef INT32
+
+extern Time qt_x_time;
+
+namespace KWinInternal
+{
+
+Options* options;
+
+Atoms* atoms;
+
+int screen_number = -1;
+
+static bool initting = FALSE;
+
+static
+int x11ErrorHandler(Display *d, XErrorEvent *e)
+ {
+ char msg[80], req[80], number[80];
+ bool ignore_badwindow = TRUE; //maybe temporary
+
+ if (initting &&
+ (
+ e->request_code == X_ChangeWindowAttributes
+ || e->request_code == X_GrabKey
+ )
+ && (e->error_code == BadAccess))
+ {
+ fputs(i18n("kwin: it looks like there's already a window manager running. kwin not started.\n").local8Bit(), stderr);
+ exit(1);
+ }
+
+ if (ignore_badwindow && (e->error_code == BadWindow || e->error_code == BadColor))
+ return 0;
+
+ XGetErrorText(d, e->error_code, msg, sizeof(msg));
+ sprintf(number, "%d", e->request_code);
+ XGetErrorDatabaseText(d, "XRequest", number, "<unknown>", req, sizeof(req));
+
+ fprintf(stderr, "kwin: %s(0x%lx): %s\n", req, e->resourceid, msg);
+
+ if (initting)
+ {
+ fputs(i18n("kwin: failure during initialization; aborting").local8Bit(), stderr);
+ exit(1);
+ }
+ return 0;
+ }
+
+Application::Application( )
+: KApplication( ), owner( screen_number )
+ {
+ KCmdLineArgs* args = KCmdLineArgs::parsedArgs();
+ if (!config()->isImmutable() && args->isSet("lock"))
+ {
+ config()->setReadOnly(true);
+ config()->reparseConfiguration();
+ }
+
+ if (screen_number == -1)
+ screen_number = DefaultScreen(qt_xdisplay());
+
+ if( !owner.claim( args->isSet( "replace" ), true ))
+ {
+ fputs(i18n("kwin: unable to claim manager selection, another wm running? (try using --replace)\n").local8Bit(), stderr);
+ ::exit(1);
+ }
+ connect( &owner, SIGNAL( lostOwnership()), SLOT( lostSelection()));
+
+ // if there was already kwin running, it saved its configuration after loosing the selection -> reread
+ config()->reparseConfiguration();
+
+ initting = TRUE; // startup....
+
+ // install X11 error handler
+ XSetErrorHandler( x11ErrorHandler );
+
+ // check whether another windowmanager is running
+ XSelectInput(qt_xdisplay(), qt_xrootwin(), SubstructureRedirectMask );
+ syncX(); // trigger error now
+
+ options = new Options;
+ atoms = new Atoms;
+
+ // create workspace.
+ (void) new Workspace( isSessionRestored() );
+
+ syncX(); // trigger possible errors, there's still a chance to abort
+
+ DCOPRef ref( "kded", "kded" );
+ ref.send( "unloadModule", QCString( "kdetrayproxy" ));
+
+ initting = FALSE; // startup done, we are up and running now.
+
+ dcopClient()->send( "ksplash", "", "upAndRunning(QString)", QString("wm started"));
+ XEvent e;
+ e.xclient.type = ClientMessage;
+ e.xclient.message_type = XInternAtom( qt_xdisplay(), "_KDE_SPLASH_PROGRESS", False );
+ e.xclient.display = qt_xdisplay();
+ e.xclient.window = qt_xrootwin();
+ e.xclient.format = 8;
+ strcpy( e.xclient.data.b, "wm started" );
+ XSendEvent( qt_xdisplay(), qt_xrootwin(), False, SubstructureNotifyMask, &e );
+ }
+
+Application::~Application()
+ {
+ delete Workspace::self();
+ if( owner.ownerWindow() != None ) // if there was no --replace (no new WM)
+ {
+ XSetInputFocus( qt_xdisplay(), PointerRoot, RevertToPointerRoot, qt_x_time );
+ DCOPRef ref( "kded", "kded" );
+ if( !ref.send( "loadModule", QCString( "kdetrayproxy" )))
+ kdWarning( 176 ) << "Loading of kdetrayproxy failed." << endl;
+ }
+ delete options;
+ }
+
+void Application::lostSelection()
+ {
+ delete Workspace::self();
+ // remove windowmanager privileges
+ XSelectInput(qt_xdisplay(), qt_xrootwin(), PropertyChangeMask );
+ DCOPRef ref( "kded", "kded" );
+ if( !ref.send( "loadModule", QCString( "kdetrayproxy" )))
+ kdWarning( 176 ) << "Loading of kdetrayproxy failed." << endl;
+ quit();
+ }
+
+bool Application::x11EventFilter( XEvent *e )
+ {
+ if ( Workspace::self()->workspaceEvent( e ) )
+ return TRUE;
+ return KApplication::x11EventFilter( e );
+ }
+
+static void sighandler(int)
+ {
+ QApplication::exit();
+ }
+
+
+} // namespace
+
+static const char version[] = "3.0";
+static const char description[] = I18N_NOOP( "KDE window manager" );
+
+static KCmdLineOptions args[] =
+ {
+ { "lock", I18N_NOOP("Disable configuration options"), 0 },
+ { "replace", I18N_NOOP("Replace already-running ICCCM2.0-compliant window manager"), 0 },
+ KCmdLineLastOption
+ };
+
+extern "C"
+KDE_EXPORT int kdemain( int argc, char * argv[] )
+ {
+ bool restored = false;
+ for (int arg = 1; arg < argc; arg++)
+ {
+ if (! qstrcmp(argv[arg], "-session"))
+ {
+ restored = true;
+ break;
+ }
+ }
+
+ if (! restored)
+ {
+ // we only do the multihead fork if we are not restored by the session
+ // manager, since the session manager will register multiple kwins,
+ // one for each screen...
+ QCString multiHead = getenv("KDE_MULTIHEAD");
+ if (multiHead.lower() == "true")
+ {
+
+ Display* dpy = XOpenDisplay( NULL );
+ if ( !dpy )
+ {
+ fprintf(stderr, "%s: FATAL ERROR while trying to open display %s\n",
+ argv[0], XDisplayName(NULL ) );
+ exit (1);
+ }
+
+ int number_of_screens = ScreenCount( dpy );
+ KWinInternal::screen_number = DefaultScreen( dpy );
+ int pos; // temporarily needed to reconstruct DISPLAY var if multi-head
+ QCString display_name = XDisplayString( dpy );
+ XCloseDisplay( dpy );
+ dpy = 0;
+
+ if ((pos = display_name.findRev('.')) != -1 )
+ display_name.remove(pos,10); // 10 is enough to be sure we removed ".s"
+
+ QCString envir;
+ if (number_of_screens != 1)
+ {
+ for (int i = 0; i < number_of_screens; i++ )
+ {
+ // if execution doesn't pass by here, then kwin
+ // acts exactly as previously
+ if ( i != KWinInternal::screen_number && fork() == 0 )
+ {
+ KWinInternal::screen_number = i;
+ // break here because we are the child process, we don't
+ // want to fork() anymore
+ break;
+ }
+ }
+ // in the next statement, display_name shouldn't contain a screen
+ // number. If it had it, it was removed at the "pos" check
+ envir.sprintf("DISPLAY=%s.%d", display_name.data(), KWinInternal::screen_number);
+
+ if (putenv( strdup(envir.data())) )
+ {
+ fprintf(stderr,
+ "%s: WARNING: unable to set DISPLAY environment variable\n",
+ argv[0]);
+ perror("putenv()");
+ }
+ }
+ }
+ }
+
+ KGlobal::locale()->setMainCatalogue("kwin");
+
+ KAboutData aboutData( "kwin", I18N_NOOP("KWin"),
+ version, description, KAboutData::License_GPL,
+ I18N_NOOP("(c) 1999-2005, The KDE Developers"));
+ aboutData.addAuthor("Matthias Ettrich",0, "ettrich@kde.org");
+ aboutData.addAuthor("Cristian Tibirna",0, "tibirna@kde.org");
+ aboutData.addAuthor("Daniel M. Duley",0, "mosfet@kde.org");
+ aboutData.addAuthor("Luboš Luňák", I18N_NOOP( "Maintainer" ), "l.lunak@kde.org");
+
+ KCmdLineArgs::init(argc, argv, &aboutData);
+ KCmdLineArgs::addCmdLineOptions( args );
+
+ if (signal(SIGTERM, KWinInternal::sighandler) == SIG_IGN)
+ signal(SIGTERM, SIG_IGN);
+ if (signal(SIGINT, KWinInternal::sighandler) == SIG_IGN)
+ signal(SIGINT, SIG_IGN);
+ if (signal(SIGHUP, KWinInternal::sighandler) == SIG_IGN)
+ signal(SIGHUP, SIG_IGN);
+
+ KApplication::disableAutoDcopRegistration();
+ KWinInternal::Application a;
+ KWinInternal::SessionManaged weAreIndeed;
+ KWinInternal::SessionSaveDoneHelper helper;
+
+ fcntl(ConnectionNumber(qt_xdisplay()), F_SETFD, 1);
+
+ QCString appname;
+ if (KWinInternal::screen_number == 0)
+ appname = "kwin";
+ else
+ appname.sprintf("kwin-screen-%d", KWinInternal::screen_number);
+
+ DCOPClient* client = a.dcopClient();
+ client->registerAs( appname.data(), false);
+ client->setDefaultObject( "KWinInterface" );
+
+ return a.exec();
+ }
+
+#include "main.moc"
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