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Visualage C++ V4.0 duplicate symbol fixes
[wxWidgets.git] / src / gtk1 / app.cpp
diff --git a/src/gtk1/app.cpp b/src/gtk1/app.cpp
index 501e62597799623320d0ee86cf34880bde0f7130..3196c1a79ca104d64acdad2a477c86641273acc5 100644 (file)
--- a/src/gtk1/app.cpp
+++ b/src/gtk1/app.cpp
@@ -2,158 +2,399 @@
 // Name:        app.cpp
 // Purpose:
 // Author:      Robert Roebling
 // Name:        app.cpp
 // Purpose:
 // Author:      Robert Roebling
-// Created:     01/02/97
-// Id:
-// Copyright:   (c) 1998 Robert Roebling, Julian Smart and Markus Holzem
-// Licence:    wxWindows licence
+// Id:          $Id$
+// Copyright:   (c) 1998 Robert Roebling, Julian Smart
+// Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
-#pragma implementation "app.h"
+    #pragma implementation "app.h"
 #endif
 
 #include "wx/app.h"
 #include "wx/gdicmn.h"
 #include "wx/utils.h"
 #endif
 
 #include "wx/app.h"
 #include "wx/gdicmn.h"
 #include "wx/utils.h"
-#include "wx/postscrp.h"
 #include "wx/intl.h"
 #include "wx/log.h"
 #include "wx/memory.h"
 #include "wx/font.h"
 #include "wx/settings.h"
 #include "wx/intl.h"
 #include "wx/log.h"
 #include "wx/memory.h"
 #include "wx/font.h"
 #include "wx/settings.h"
-#include "wx/resource.h"
+#include "wx/dialog.h"
 
 
-#include "unistd.h"
+#if wxUSE_WX_RESOURCES
+    #include "wx/resource.h"
+#endif
+
+#include "wx/module.h"
+#include "wx/image.h"
 
 
-#ifdef wxUSE_GDK_IMLIB
-#include "../gdk_imlib/gdk_imlib.h"
+#if wxUSE_THREADS
+#include "wx/thread.h"
 #endif
 
 #endif
 
+#include <unistd.h>
+
+#include <glib.h>
+#include <gdk/gdk.h>
+#include <gtk/gtk.h>
+
+#include "wx/gtk/win_gtk.h"
+
 //-----------------------------------------------------------------------------
 // global data
 //-----------------------------------------------------------------------------
 
 wxApp *wxTheApp = (wxApp *)  NULL;
 //-----------------------------------------------------------------------------
 // global data
 //-----------------------------------------------------------------------------
 
 wxApp *wxTheApp = (wxApp *)  NULL;
-wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
+wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
+
+extern bool g_isIdle;
 
 
-extern wxList wxPendingDelete;
-extern wxResourceCache *wxTheResourceCache;
+bool g_mainThreadLocked = FALSE;
 
 //-----------------------------------------------------------------------------
 // local functions
 //-----------------------------------------------------------------------------
 
 
 //-----------------------------------------------------------------------------
 // local functions
 //-----------------------------------------------------------------------------
 
-extern void wxFlushResources(void);
+/* forward declaration */
+gint   wxapp_idle_callback( gpointer WXUNUSED(data) );
+void   wxapp_install_idle_handler();
+
+#if wxUSE_THREADS
+gint   wxapp_wakeup_timerout_callback( gpointer WXUNUSED(data) );
+#endif
 
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
-// global functions
+// wxExit
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 
-void wxExit(void)
+void wxExit()
 {
 {
-  gtk_main_quit();
+    gtk_main_quit();
 }
 
 }
 
-bool wxYield(void)
+//-----------------------------------------------------------------------------
+// wxYield
+//-----------------------------------------------------------------------------
+
+bool wxYield()
 {
 {
-  while (gtk_events_pending() > 0) gtk_main_iteration();
-  return TRUE;
+    bool has_idle = (wxTheApp->m_idleTag != 0);
+
+    if (has_idle)
+    {
+        /* We need to temporarily remove idle callbacks or the loop will
+           never finish. */
+        gtk_idle_remove( wxTheApp->m_idleTag );
+        wxTheApp->m_idleTag = 0;
+    }
+
+    while (gtk_events_pending())
+        gtk_main_iteration();
+
+    /* it's necessary to call ProcessIdle() to update the frames sizes which
+       might have been changed (it also will update other things set from
+       OnUpdateUI() which is a nice (and desired) side effect) */
+    while (wxTheApp->ProcessIdle()) { }
+
+    if (has_idle)
+    {
+        /* re-add idle handler */
+        wxTheApp->m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
+    }
+
+    return TRUE;
 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------
-// wxApp
+// wxWakeUpIdle
 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 
-IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
+void wxWakeUpIdle()
+{
+#if wxUSE_THREADS
+    if (!wxThread::IsMain())
+        wxMutexGuiEnter();
+#endif
 
 
-BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
-    EVT_IDLE(wxApp::OnIdle)
-END_EVENT_TABLE()
+    if (g_isIdle) 
+        wxapp_install_idle_handler();
+    
+#if wxUSE_THREADS
+    if (!wxThread::IsMain())
+        wxMutexGuiLeave();
+#endif
+}
+
+//-----------------------------------------------------------------------------
+// local functions
+//-----------------------------------------------------------------------------
 
 gint wxapp_idle_callback( gpointer WXUNUSED(data) )
 {
 
 gint wxapp_idle_callback( gpointer WXUNUSED(data) )
 {
-  if (wxTheApp) while (wxTheApp->ProcessIdle()) {}
-  usleep( 10000 );
-  return TRUE;
+    if (!wxTheApp) return TRUE;
+
+    // when getting called from GDK's time-out handler
+    // we are no longer within GDK's grab on the GUI
+    // thread so we must lock it here ourselves
+    gdk_threads_enter();
+
+    /* we don't want any more idle events until the next event is
+       sent to wxGTK */
+    gtk_idle_remove( wxTheApp->m_idleTag );
+    wxTheApp->m_idleTag = 0;
+
+    /* indicate that we are now in idle mode - even so deeply
+       in idle mode that we don't get any idle events anymore.
+       this is like wxMSW where an idle event is sent only
+       once each time after the event queue has been completely
+       emptied */
+    g_isIdle = TRUE;
+
+    /* sent idle event to all who request them */
+    while (wxTheApp->ProcessIdle()) { }
+
+    // release lock again
+    gdk_threads_leave();
+
+    return TRUE;
 }
 
 }
 
-wxApp::wxApp()
+void wxapp_install_idle_handler()
 {
 {
-  m_idleTag = 0;
-  m_topWindow = (wxWindow *) NULL;
-  m_exitOnFrameDelete = TRUE;
-  wxTheApp = this;
+    wxASSERT_MSG( wxTheApp->m_idleTag == 0, wxT("attempt to install idle handler twice") );
+
+    /* This routine gets called by all event handlers
+       indicating that the idle is over. It may also
+       get called from other thread for sending events
+       to the main thread (and processing these in
+       idle time). */
+
+    wxTheApp->m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
+
+    g_isIdle = FALSE;
 }
 
 }
 
-wxApp::~wxApp(void)
+#if wxUSE_THREADS
+
+void wxapp_install_thread_wakeup()
 {
 {
-  gtk_idle_remove( m_idleTag );
+    if (wxTheApp->m_wakeUpTimerTag) return;
+
+    wxTheApp->m_wakeUpTimerTag = gtk_timeout_add( 50, wxapp_wakeup_timerout_callback, (gpointer) NULL );
 }
 
 }
 
-bool wxApp::OnInit(void)
+void wxapp_uninstall_thread_wakeup()
 {
 {
-  return TRUE;
+    if (!wxTheApp->m_wakeUpTimerTag) return;
+
+    gtk_timeout_remove( wxTheApp->m_wakeUpTimerTag );
+    wxTheApp->m_wakeUpTimerTag = 0;
 }
 
 }
 
-bool wxApp::OnInitGui(void)
+gint wxapp_wakeup_timerout_callback( gpointer WXUNUSED(data) )
 {
 {
-  m_idleTag = gtk_idle_add( wxapp_idle_callback, NULL );
-  return TRUE;
+    // when getting called from GDK's time-out handler
+    // we are no longer within GDK's grab on the GUI
+    // thread so we must lock it here ourselves
+    gdk_threads_enter();
+
+    wxapp_uninstall_thread_wakeup();
+
+    // unblock other threads wishing to do some GUI things
+    wxMutexGuiLeave();
+    
+    g_mainThreadLocked = TRUE;
+
+    // wake up other threads
+    wxUsleep( 1 );
+
+    // block other thread again
+    wxMutexGuiEnter();
+
+    g_mainThreadLocked = FALSE;
+
+    wxapp_install_thread_wakeup();
+
+    // release lock again
+    gdk_threads_leave();
+    
+    return TRUE;
 }
 
 }
 
-int wxApp::OnRun(void)
+#endif // wxUSE_THREADS
+
+//-----------------------------------------------------------------------------
+// wxApp
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
+
+BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
+    EVT_IDLE(wxApp::OnIdle)
+END_EVENT_TABLE()
+
+wxApp::wxApp()
 {
 {
-  return MainLoop();
+    wxTheApp = this;
+
+    m_topWindow = (wxWindow *) NULL;
+    m_exitOnFrameDelete = TRUE;
+
+    m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
+
+#if wxUSE_THREADS
+    m_wakeUpTimerTag = 0;
+    wxapp_install_thread_wakeup();
+#endif
+
+    m_colorCube = (unsigned char*) NULL;
 }
 
 }
 
-bool wxApp::ProcessIdle(void)
+wxApp::~wxApp()
 {
 {
-  wxIdleEvent event;
-  event.SetEventObject( this );
-  ProcessEvent( event );
+    if (m_idleTag) gtk_idle_remove( m_idleTag );
+
+#if wxUSE_THREADS
+    wxapp_uninstall_thread_wakeup();
+#endif
 
 
-  return event.MoreRequested();
+    if (m_colorCube) free(m_colorCube);
 }
 
 }
 
-void wxApp::OnIdle( wxIdleEvent &event )
+bool wxApp::OnInitGui()
 {
 {
-  static bool inOnIdle = FALSE;
+    GdkVisual *visual = gdk_visual_get_system();
+
+    /* on some machines, the default visual is just 256 colours, so
+       we make sure we get the best. this can sometimes be wasteful,
+       of course, but what do these guys pay $30.000 for? */
+/*
+    if (gdk_visual_get_best() != gdk_visual_get_system())
+    {
+        GdkVisual* vis = gdk_visual_get_best();
+        gtk_widget_set_default_visual( vis );
+
+        GdkColormap *colormap = gdk_colormap_new( vis, FALSE );
+        gtk_widget_set_default_colormap( colormap );
+
+        visual = vis;
+    }
+*/
+
+    /* Nothing to do for 15, 16, 24, 32 bit displays */
+    if (visual->depth > 8) return TRUE;
 
 
-  // Avoid recursion (via ProcessEvent default case)
-  if (inOnIdle)
-    return;
+    /* initialize color cube for 8-bit color reduction dithering */
 
 
-  inOnIdle = TRUE;
+    GdkColormap *cmap = gtk_widget_get_default_colormap();
 
 
-  // 'Garbage' collection of windows deleted with Close().
-  DeletePendingObjects();
+    m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
 
 
-  // flush the logged messages if any
-  wxLog *pLog = wxLog::GetActiveTarget();
-  if ( pLog != NULL && pLog->HasPendingMessages() )
-    pLog->Flush();
+    for (int r = 0; r < 32; r++)
+    {
+        for (int g = 0; g < 32; g++)
+        {
+            for (int b = 0; b < 32; b++)
+            {
+                int rr = (r << 3) | (r >> 2);
+                int gg = (g << 3) | (g >> 2);
+                int bb = (b << 3) | (b >> 2);
+
+                int index = -1;
+
+                GdkColor *colors = cmap->colors;
+                if (colors)
+                {
+                    int max = 3 * 65536;
+
+                    for (int i = 0; i < cmap->size; i++)
+                    {
+                        int rdiff = ((rr << 8) - colors[i].red);
+                        int gdiff = ((gg << 8) - colors[i].green);
+                        int bdiff = ((bb << 8) - colors[i].blue);
+                        int sum = ABS (rdiff) + ABS (gdiff) + ABS (bdiff);
+                        if (sum < max)
+                        {
+                            index = i; max = sum;
+                        }
+                    }
+                }
+                else
+                {
+#if (GTK_MINOR_VERSION > 0)
+                    /* assume 8-bit true or static colors. this really
+                       exists. */
+                    GdkVisual* vis = gdk_colormap_get_visual( cmap );
+                    index = (r >> (5 - vis->red_prec)) << vis->red_shift;
+                    index |= (g >> (5 - vis->green_prec)) << vis->green_shift;
+                    index |= (b >> (5 - vis->blue_prec)) << vis->blue_shift;
+#else
+                    wxFAIL_MSG( wxT("Unsupported graphics hardware") );
+#endif
+                }
+                m_colorCube[ (r*1024) + (g*32) + b ] = index;
+            }
+        }
+    }
 
 
-  // Send OnIdle events to all windows
-  bool needMore = SendIdleEvents();
+    return TRUE;
+}
 
 
-  if (needMore)
-    event.RequestMore(TRUE);
+bool wxApp::ProcessIdle()
+{
+    wxIdleEvent event;
+    event.SetEventObject( this );
+    ProcessEvent( event );
 
 
-  inOnIdle = FALSE;
+    return event.MoreRequested();
 }
 
 }
 
-bool wxApp::SendIdleEvents(void)
+void wxApp::OnIdle( wxIdleEvent &event )
+{
+    static bool s_inOnIdle = FALSE;
+    
+    /* Avoid recursion (via ProcessEvent default case) */
+    if (s_inOnIdle)
+        return;
+    
+    s_inOnIdle = TRUE;
+
+    /* Resend in the main thread events which have been prepared in other
+       threads */
+    ProcessPendingEvents();
+
+    /* 'Garbage' collection of windows deleted with Close(). */
+    DeletePendingObjects();
+
+    /* Send OnIdle events to all windows */
+    bool needMore = SendIdleEvents();
+
+    if (needMore)
+        event.RequestMore(TRUE);
+
+    s_inOnIdle = FALSE;
+
+    /* flush the logged messages if any */
+#if wxUSE_LOG
+    wxLog *log = wxLog::GetActiveTarget();
+    if (log != NULL && log->HasPendingMessages())
+        log->Flush();
+#endif // wxUSE_LOG
+}
+
+bool wxApp::SendIdleEvents()
 {
     bool needMore = FALSE;
 {
     bool needMore = FALSE;
-       wxNode* node = wxTopLevelWindows.First();
-       while (node)
-       {
-               wxWindow* win = (wxWindow*) node->Data();
-               if (SendIdleEvents(win))
+
+    wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
+    while (node)
+    {
+        wxWindow* win = node->GetData();
+        if (SendIdleEvents(win))
             needMore = TRUE;
             needMore = TRUE;
+        node = node->GetNext();
+    }
 
 
-               node = node->Next();
-       }
     return needMore;
 }
 
     return needMore;
 }
 
@@ -161,143 +402,153 @@ bool wxApp::SendIdleEvents( wxWindow* win )
 {
     bool needMore = FALSE;
 
 {
     bool needMore = FALSE;
 
-       wxIdleEvent event;
-       event.SetEventObject(win);
-       win->ProcessEvent(event);
+    wxIdleEvent event;
+    event.SetEventObject(win);
+
+    win->ProcessEvent(event);
+
+    win->OnInternalIdle();
 
     if (event.MoreRequested())
         needMore = TRUE;
 
 
     if (event.MoreRequested())
         needMore = TRUE;
 
-       wxNode* node = win->GetChildren()->First();
-       while (node)
-       {
-               wxWindow* win = (wxWindow*) node->Data();
-               if (SendIdleEvents(win))
+    wxNode* node = win->GetChildren().First();
+    while (node)
+    {
+        wxWindow* win = (wxWindow*) node->Data();
+        if (SendIdleEvents(win))
             needMore = TRUE;
 
             needMore = TRUE;
 
-               node = node->Next();
-       }
+        node = node->Next();
+    }
     return needMore ;
 }
 
     return needMore ;
 }
 
-int wxApp::OnExit(void)
+int wxApp::MainLoop()
 {
 {
-  return 0;
-}
-
-int wxApp::MainLoop(void)
-{
-  gtk_main();
-  return 0;
+    gtk_main();
+    return 0;
 }
 
 }
 
-void wxApp::ExitMainLoop(void)
+void wxApp::ExitMainLoop()
 {
 {
-  gtk_main_quit();
+    if (gtk_main_level() > 0)
+        gtk_main_quit();
 }
 
 }
 
-bool wxApp::Initialized(void)
+bool wxApp::Initialized()
 {
 {
-  return m_initialized;
+    return m_initialized;
 }
 
 }
 
-bool wxApp::Pending(void)
+bool wxApp::Pending()
 {
 {
-  return FALSE;
+    return (gtk_events_pending() > 0);
 }
 
 }
 
-void wxApp::Dispatch(void)
+void wxApp::Dispatch()
 {
 {
+    gtk_main_iteration();
 }
 
 }
 
-void wxApp::DeletePendingObjects(void)
+void wxApp::DeletePendingObjects()
 {
 {
-  wxNode *node = wxPendingDelete.First();
-  while (node)
-  {
-    wxObject *obj = (wxObject *)node->Data();
+    wxNode *node = wxPendingDelete.First();
+    while (node)
+    {
+        wxObject *obj = (wxObject *)node->Data();
 
 
-    delete obj;
+        delete obj;
 
 
-    if (wxPendingDelete.Member(obj))
-      delete node;
+        if (wxPendingDelete.Find(obj))
+            delete node;
 
 
-    node = wxPendingDelete.First();
-  }
+        node = wxPendingDelete.First();
+    }
 }
 
 }
 
-wxWindow *wxApp::GetTopWindow(void)
+bool wxApp::Initialize()
 {
 {
-  if (m_topWindow) return m_topWindow;
-  wxNode *node = wxTopLevelWindows.First();
-  if (!node) return (wxWindow *) NULL;
-  return (wxWindow*)node->Data();
-}
+    wxBuffer = new wxChar[BUFSIZ + 512];
 
 
-void wxApp::SetTopWindow( wxWindow *win )
-{
-  m_topWindow = win;
-}
+    wxClassInfo::InitializeClasses();
 
 
-void wxApp::CommonInit(void)
-{
+    wxSystemSettings::Init();
 
 
-/*
-#if wxUSE_RESOURCES
-  (void) wxGetResource("wxWindows", "OsVersion", &wxOsVersion);
+    // GL: I'm annoyed ... I don't know where to put this and I don't want to
+    // create a module for that as it's part of the core.
+#if wxUSE_THREADS
+    wxPendingEvents = new wxList();
+    wxPendingEventsLocker = new wxCriticalSection();
 #endif
 #endif
-*/
-  wxSystemSettings::Init();
-  wxTheResourceCache = new wxResourceCache(wxKEY_STRING);
 
 
-  wxTheFontNameDirectory =  new wxFontNameDirectory;
-  wxTheFontNameDirectory->Initialize();
+    wxTheColourDatabase = new wxColourDatabase( wxKEY_STRING );
+    wxTheColourDatabase->Initialize();
+
+    wxInitializeStockLists();
+    wxInitializeStockObjects();
+
+#if wxUSE_WX_RESOURCES
+    wxInitializeResourceSystem();
+#endif
 
 
-  wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
-  wxTheColourDatabase->Initialize();
+    wxModule::RegisterModules();
+    if (!wxModule::InitializeModules()) return FALSE;
 
 
-  wxInitializeStockLists();
-  wxInitializeStockObjects();
+    return TRUE;
+}
 
 
-  wxInitializeResourceSystem();
+void wxApp::CleanUp()
+{
+    wxModule::CleanUpModules();
 
 
-  // For PostScript printing
-#if wxUSE_POSTSCRIPT
-  wxInitializePrintSetupData();
-  wxThePrintPaperDatabase = new wxPrintPaperDatabase;
-  wxThePrintPaperDatabase->CreateDatabase();
+#if wxUSE_WX_RESOURCES
+    wxCleanUpResourceSystem();
 #endif
 
 #endif
 
+    if (wxTheColourDatabase)
+        delete wxTheColourDatabase;
+        
+    wxTheColourDatabase = (wxColourDatabase*) NULL;
 
 
-/*
-  wxBitmap::InitStandardHandlers();
+    wxDeleteStockObjects();
 
 
-  g_globalCursor = new wxCursor;
-*/
-}
+    wxDeleteStockLists();
 
 
-void wxApp::CommonCleanUp(void)
-{
-  wxDELETE(wxTheColourDatabase);
-  wxDELETE(wxThePrintPaperDatabase);
-  wxDELETE(wxThePrintSetupData);
-  wxDELETE(wxTheFontNameDirectory);
-  wxDeleteStockObjects();
+    delete wxTheApp;
+    wxTheApp = (wxApp*) NULL;
 
 
-  wxFlushResources();
+    // GL: I'm annoyed ... I don't know where to put this and I don't want to
+    // create a module for that as it's part of the core.
+#if wxUSE_THREADS
+    delete wxPendingEvents;
+    delete wxPendingEventsLocker;
+#endif
 
 
-  wxDELETE(wxTheResourceCache);
+    wxSystemSettings::Done();
 
 
-  wxDeleteStockLists();
+    delete[] wxBuffer;
 
 
-  wxCleanUpResourceSystem();
+    wxClassInfo::CleanUpClasses();
 
 
-  wxSystemSettings::Done();
-}
+    // check for memory leaks
+#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
+    if (wxDebugContext::CountObjectsLeft() > 0)
+    {
+        wxLogDebug(wxT("There were memory leaks.\n"));
+        wxDebugContext::Dump();
+        wxDebugContext::PrintStatistics();
+    }
+#endif // Debug
 
 
-wxLog *wxApp::CreateLogTarget()
-{
-  return new wxLogGui;
+#if wxUSE_LOG
+    // do this as the very last thing because everything else can log messages
+    wxLog::DontCreateOnDemand();
+
+    wxLog *oldLog = wxLog::SetActiveTarget( (wxLog*) NULL );
+    if (oldLog)
+        delete oldLog;
+#endif // wxUSE_LOG
 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------
@@ -306,120 +557,163 @@ wxLog *wxApp::CreateLogTarget()
 
 int wxEntry( int argc, char *argv[] )
 {
 
 int wxEntry( int argc, char *argv[] )
 {
-  wxBuffer = new char[BUFSIZ + 512];
-
-  wxClassInfo::InitializeClasses();
-
-#if (WXDEBUG && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
-
-  streambuf* sBuf = new wxDebugStreamBuf;
-  ostream* oStr = new ostream(sBuf) ;
-  wxDebugContext::SetStream(oStr, sBuf);
-
-#endif
-
-  if (!wxTheApp)
-  {
-    if (!wxApp::GetInitializerFunction())
+#if wxUSE_THREADS
+    /* GTK 1.2 up to version 1.2.3 has broken threads */
+    if ((gtk_major_version == 1) &&
+        (gtk_minor_version == 2) &&
+           (gtk_micro_version < 4))
+    {
+        printf( "wxWindows warning: Disabled GUI threading due to outdated GTK version\n" );
+    }
+    else
     {
     {
-      printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
-      return 0;
+        g_thread_init(NULL);
     }
     }
+#endif
+    
+    gtk_set_locale();
 
 
-    wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
+#if wxUSE_WCHAR_T
+    if (!wxOKlibc()) wxConvCurrent = &wxConvLocal;
+#else
+    if (!wxOKlibc()) wxConvCurrent = (wxMBConv*) NULL;
+#endif
 
 
-    wxObject *test_app = app_ini();
+    gdk_threads_enter();
 
 
-    wxTheApp = (wxApp*) test_app;
-  }
+    gtk_init( &argc, &argv );
 
 
-  if (!wxTheApp)
-  {
-    printf( "wxWindows error: wxTheApp == NULL\n" );
-    return 0;
-  }
+    wxSetDetectableAutoRepeat( TRUE );
 
 
-  wxTheApp->argc = argc;
-  wxTheApp->argv = argv;
+    if (!wxApp::Initialize())
+    {
+        gdk_threads_leave();
+        return -1;
+    }
 
 
-  char name[200];
-  strcpy( name, argv[0] );
-  strcpy( name, wxFileNameFromPath(name) );
-  wxStripExtension( name );
-  wxTheApp->SetAppName( name );
-  
-  gtk_set_locale();
-  
-  gtk_init( &argc, &argv );
+    if (!wxTheApp)
+    {
+        wxCHECK_MSG( wxApp::GetInitializerFunction(), -1,
+                     wxT("wxWindows error: No initializer - use IMPLEMENT_APP macro.\n") );
 
 
-#ifdef wxUSE_GDK_IMLIB
+        wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 
 
-  gdk_imlib_init();
+        wxObject *test_app = app_ini();
 
 
-  gtk_widget_push_visual(gdk_imlib_get_visual());
+        wxTheApp = (wxApp*) test_app;
+    }
 
 
-  gtk_widget_push_colormap(gdk_imlib_get_colormap());
+    wxCHECK_MSG( wxTheApp, -1, wxT("wxWindows error: no application object") );
 
 
+    wxTheApp->argc = argc;
+#if wxUSE_UNICODE
+    wxTheApp->argv = new wxChar*[argc+1];
+    int mb_argc = 0;
+    while (mb_argc < argc) 
+    {
+        wxTheApp->argv[mb_argc] = wxStrdup(wxConvLibc.cMB2WX(argv[mb_argc]));
+        mb_argc++;
+    }
+    wxTheApp->argv[mb_argc] = (wxChar *)NULL;
+#else
+    wxTheApp->argv = argv;
 #endif
 
 #endif
 
-  wxApp::CommonInit();
-
-  wxTheApp->OnInitGui();
-
-  // Here frames insert themselves automatically
-  // into wxTopLevelWindows by getting created
-  // in OnInit().
-
-  if (!wxTheApp->OnInit()) return 0;
+    wxString name(wxFileNameFromPath(argv[0]));
+    wxStripExtension( name );
+    wxTheApp->SetAppName( name );
 
 
-  wxTheApp->m_initialized = (wxTopLevelWindows.Number() > 0);
+    int retValue = 0;
 
 
-  int retValue = 0;
+    if ( !wxTheApp->OnInitGui() )
+        retValue = -1;
 
 
-  if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
+    // Here frames insert themselves automatically into wxTopLevelWindows by
+    // getting created in OnInit().
+    if ( retValue == 0 )
+    {
+        if ( !wxTheApp->OnInit() )
+            retValue = -1;
+    }
 
 
-  wxTheApp->DeletePendingObjects();
+    if ( retValue == 0 )
+    {
+        /* delete pending toplevel windows (typically a single
+           dialog) so that, if there isn't any left, we don't
+           call OnRun() */
+        wxTheApp->DeletePendingObjects();
+
+        wxTheApp->m_initialized = wxTopLevelWindows.GetCount() != 0;
+
+        if (wxTheApp->Initialized())
+        {
+            retValue = wxTheApp->OnRun();
+
+            wxWindow *topWindow = wxTheApp->GetTopWindow();
+            if (topWindow)
+            {
+                /* Forcibly delete the window. */
+                if (topWindow->IsKindOf(CLASSINFO(wxFrame)) ||
+                    topWindow->IsKindOf(CLASSINFO(wxDialog)) )
+                {
+                    topWindow->Close( TRUE );
+                    wxTheApp->DeletePendingObjects();
+                }
+                else
+                {
+                    delete topWindow;
+                    wxTheApp->SetTopWindow( (wxWindow*) NULL );
+                }
+            }
+            wxTheApp->OnExit();
+        }
+    }
 
 
-  wxTheApp->OnExit();
+#if wxUSE_LOG
+    // flush the logged messages if any
+    wxLog *log = wxLog::GetActiveTarget();
+    if (log != NULL && log->HasPendingMessages())
+        log->Flush();
 
 
-  wxApp::CommonCleanUp();
+    // continuing to use user defined log target is unsafe from now on because
+    // some resources may be already unavailable, so replace it by something
+    // more safe
+    wxLog *oldlog = wxLog::SetActiveTarget(new wxLogStderr);
+    if ( oldlog )
+        delete oldlog;
+#endif // wxUSE_LOG
 
 
-  wxDELETE(wxTheApp);
+    wxApp::CleanUp();
 
 
-  wxLog *oldLog = wxLog::SetActiveTarget( NULL );
-  if (oldLog) delete oldLog;
-  
-  wxClassInfo::CleanUpClasses();
-  
-  delete[] wxBuffer;
-  
-#if (WXDEBUG && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
-  
-  if (wxDebugContext::CountObjectsLeft() > 0)
-  {
-    wxTrace("There were memory leaks.\n");
-    wxDebugContext::Dump();
-    wxDebugContext::PrintStatistics();
-  }
-  wxDebugContext::SetStream(NULL, NULL);
-  
-#endif
+    gdk_threads_leave();
 
 
-  return retValue;
+    return retValue;
 }
 
 }
 
-//-----------------------------------------------------------------------------
-// main()
-//-----------------------------------------------------------------------------
-
-#if defined(AIX) || defined(AIX4) || defined(____HPUX__) || defined(NOMAIN)
+#include "wx/gtk/info.xpm"
+#include "wx/gtk/error.xpm"
+#include "wx/gtk/question.xpm"
+#include "wx/gtk/warning.xpm"
 
 
- // main in IMPLEMENT_WX_MAIN in IMPLEMENT_APP in app.h
-
-#else
+wxIcon
+wxApp::GetStdIcon(int which) const
+{
+    switch(which)
+    {
+        case wxICON_INFORMATION:
+            return wxIcon(info_xpm);
 
 
-  int main(int argc, char *argv[]) { return wxEntry(argc, argv); }
+        case wxICON_QUESTION:
+            return wxIcon(question_xpm);
 
 
-#endif
+        case wxICON_EXCLAMATION:
+            return wxIcon(warning_xpm);
 
 
+        default:
+            wxFAIL_MSG(wxT("requested non existent standard icon"));
+            // still fall through
 
 
+        case wxICON_HAND:
+            return wxIcon(error_xpm);
+    }
+}
wxWidgets (Impactor)