VTK wrapper of vtkRenderWindow for wxPython. Tested on MSW so far.

[wxWidgets.git] / src / gtk1 / app.cpp

diff --git a/src/gtk1/app.cpp b/src/gtk1/app.cpp
index 9c88e7e7b92deba21d36a94c8a22070fc4aad0e3..5d08196d7b2e1ebd346c18f3211b963cd805ee51 100644 (file)
--- a/src/gtk1/app.cpp
+++ b/src/gtk1/app.cpp
@@ -28,13 +28,15 @@
 #include "wx/module.h"
 #include "wx/image.h"
 
 #include "wx/module.h"
 #include "wx/image.h"
 

+#if wxUSE_THREADS

 #include "wx/thread.h"
 #include "wx/thread.h"

+#endif

 
 #include "unistd.h"
 
 
 #include "unistd.h"
 

-#include <glib.h>
-#include <gdk/gdk.h>
-#include <gtk/gtk.h>
+#include "glib.h"
+#include "gdk/gdk.h"
+#include "gtk/gtk.h"

 
 #include "wx/gtk/win_gtk.h"
 
 
 #include "wx/gtk/win_gtk.h"
 


@@ -43,10 +45,10 @@
 //-----------------------------------------------------------------------------
 
 wxApp *wxTheApp = (wxApp *)  NULL;
 //-----------------------------------------------------------------------------
 
 wxApp *wxTheApp = (wxApp *)  NULL;

-wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
+wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;

 
 

-extern wxList wxPendingDelete;

 extern wxResourceCache *wxTheResourceCache;
 extern wxResourceCache *wxTheResourceCache;

+extern bool g_isIdle;

 
 unsigned char g_palette[64*3] =
 {
 
 unsigned char g_palette[64*3] =
 {


@@ -120,10 +122,18 @@ unsigned char g_palette[64*3] =
 // local functions
 //-----------------------------------------------------------------------------
 
 // local functions
 //-----------------------------------------------------------------------------
 

-extern void wxFlushResources(void);
+extern void wxFlushResources();
+
+/* 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 wxExit()


@@ -131,38 +141,158 @@ void wxExit()
     gtk_main_quit();
 }
 
     gtk_main_quit();
 }
 

+//-----------------------------------------------------------------------------
+// wxYield
+//-----------------------------------------------------------------------------
+

 bool wxYield()
 {
 bool wxYield()
 {

-    while (gtk_events_pending() > 0) gtk_main_iteration();
+    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;
 }
 
 //-----------------------------------------------------------------------------
     return TRUE;
 }
 
 //-----------------------------------------------------------------------------

-// wxApp
+// wxWakeUpIdle

 //-----------------------------------------------------------------------------
 
 //-----------------------------------------------------------------------------
 

-IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
+void wxWakeUpIdle()
+{
+    if (g_isIdle) 
+        wxapp_install_idle_handler();
+}

 
 

-BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
-    EVT_IDLE(wxApp::OnIdle)
-END_EVENT_TABLE()
+//-----------------------------------------------------------------------------
+// local functions
+//-----------------------------------------------------------------------------

 
 gint wxapp_idle_callback( gpointer WXUNUSED(data) )
 {
 
 gint wxapp_idle_callback( gpointer WXUNUSED(data) )
 {

-    if (wxTheApp)
-    {
-        while (wxTheApp->ProcessIdle())
-        {
-        }
-    }
+    if (!wxTheApp) return TRUE;

 
 

+#if (GTK_MINOR_VERSION > 0)
+    /* when getting called from GDK's idle handler we
+       are no longer within GDK's grab on the GUI
+       thread so we must lock it here ourselves */
+    GDK_THREADS_ENTER ();
+#endif
+
+    /* sent idle event to all who request them */
+    while (wxTheApp->ProcessIdle()) { }
+
+    /* 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;
+
+#if (GTK_MINOR_VERSION > 0)
+    /* release lock again */
+    GDK_THREADS_LEAVE ();
+#endif
+
+    return TRUE;
+}
+
+void wxapp_install_idle_handler()
+{
+    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. */
+
+    wxTheApp->m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
+
+    g_isIdle = FALSE;
+}
+
+#if wxUSE_THREADS
+
+void wxapp_install_thread_wakeup()
+{
+    if (wxTheApp->m_wakeUpTimerTag) return;
+
+    wxTheApp->m_wakeUpTimerTag = gtk_timeout_add( 100, wxapp_wakeup_timerout_callback, (gpointer) NULL );
+}
+
+void wxapp_uninstall_thread_wakeup()
+{
+    if (!wxTheApp->m_wakeUpTimerTag) return;
+
+    gtk_timeout_remove( wxTheApp->m_wakeUpTimerTag );
+    wxTheApp->m_wakeUpTimerTag = 0;
+}
+
+gint wxapp_wakeup_timerout_callback( gpointer WXUNUSED(data) )
+{
+    wxapp_uninstall_thread_wakeup();
+
+#if (GTK_MINOR_VERSION > 0)
+    // 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 ();
+#endif
+
+    // unblock other threads wishing to do some GUI things

     wxMutexGuiLeave();
     wxMutexGuiLeave();

-    wxUsleep(10);
+
+    // wake up other threads
+    wxUsleep( 1 );
+
+    // block other thread again

     wxMutexGuiEnter();
 
     wxMutexGuiEnter();
 

+#if (GTK_MINOR_VERSION > 0)
+    // release lock again
+    GDK_THREADS_LEAVE ();
+#endif
+
+    wxapp_install_thread_wakeup();
+

     return TRUE;
 }
 
     return TRUE;
 }
 

+#endif // wxUSE_THREADS
+
+//-----------------------------------------------------------------------------
+// wxApp
+//-----------------------------------------------------------------------------
+
+IMPLEMENT_DYNAMIC_CLASS(wxApp,wxEvtHandler)
+
+BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
+    EVT_IDLE(wxApp::OnIdle)
+END_EVENT_TABLE()
+

 wxApp::wxApp()
 {
     wxTheApp = this;
 wxApp::wxApp()
 {
     wxTheApp = this;


@@ -172,21 +302,46 @@ wxApp::wxApp()
 
     m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
 
 
     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;
 }
 
 wxApp::~wxApp()
 {
     m_colorCube = (unsigned char*) NULL;
 }
 
 wxApp::~wxApp()
 {

-    gtk_idle_remove( m_idleTag );
+    if (m_idleTag) gtk_idle_remove( m_idleTag );
+
+#if wxUSE_THREADS
+    wxapp_uninstall_thread_wakeup();
+#endif

 
     if (m_colorCube) free(m_colorCube);
 }
 
 bool wxApp::OnInitGui()
 {
 
     if (m_colorCube) free(m_colorCube);
 }
 
 bool wxApp::OnInitGui()
 {

-    /* Nothing to do for 15, 16, 24, 32 bit displays */
-

     GdkVisual *visual = gdk_visual_get_system();
     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;
 
         /* this initiates the standard palette as defined by GdkImlib
     if (visual->depth > 8) return TRUE;
 
         /* this initiates the standard palette as defined by GdkImlib


@@ -194,7 +349,7 @@ bool wxApp::OnInitGui()
            use the same 64 colormap entries on 8-bit displays so you
            can use several rather graphics-heavy applications at the
            same time.
            use the same 64 colormap entries on 8-bit displays so you
            can use several rather graphics-heavy applications at the
            same time.

-          NOTE: this doesn't really seem to work this way... */
+           NOTE: this doesn't really seem to work this way... */

 
         /*
         GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );
 
         /*
         GdkColormap *cmap = gdk_colormap_new( gdk_visual_get_system(), TRUE );


@@ -219,35 +374,53 @@ bool wxApp::OnInitGui()
 
     m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
 
 
     m_colorCube = (unsigned char*)malloc(32 * 32 * 32);
 

-     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);
+    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);

 
 

-                GdkColor *colors = cmap->colors;
-                int max = 3 * (65536);

                 int index = -1;
 
                 int index = -1;
 

-                for (int i = 0; i < cmap->size; i++)
+                GdkColor *colors = cmap->colors;
+                if (colors)

                 {
                 {

-                    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; }
+                    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;
+                        }
+                    }

                 }
                 }

-
-               m_colorCube[ (r*1024) + (g*32) + b ] = index;
-           }
-       }
+                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;
+            }
+        }

     }
 
     }
 

-

     return TRUE;
 }
 
     return TRUE;
 }
 


@@ -262,21 +435,27 @@ bool wxApp::ProcessIdle()
 
 void wxApp::OnIdle( wxIdleEvent &event )
 {
 
 void wxApp::OnIdle( wxIdleEvent &event )
 {

-    static bool inOnIdle = FALSE;
+    static bool s_inOnIdle = FALSE;

 
     /* Avoid recursion (via ProcessEvent default case) */
 
     /* Avoid recursion (via ProcessEvent default case) */

-    if (inOnIdle)
+    if (s_inOnIdle)

         return;
 
         return;
 

-    inOnIdle = TRUE;
+    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();
 
     /* flush the logged messages if any */
 
     /* 'Garbage' collection of windows deleted with Close(). */
     DeletePendingObjects();
 
     /* flush the logged messages if any */

+#if wxUSE_LOG

     wxLog *log = wxLog::GetActiveTarget();
     if (log != NULL && log->HasPendingMessages())
         log->Flush();
     wxLog *log = wxLog::GetActiveTarget();
     if (log != NULL && log->HasPendingMessages())
         log->Flush();

+#endif // wxUSE_LOG

 
     /* Send OnIdle events to all windows */
     bool needMore = SendIdleEvents();
 
     /* Send OnIdle events to all windows */
     bool needMore = SendIdleEvents();


@@ -284,21 +463,22 @@ void wxApp::OnIdle( wxIdleEvent &event )
     if (needMore)
         event.RequestMore(TRUE);
 
     if (needMore)
         event.RequestMore(TRUE);
 

-    inOnIdle = FALSE;
+    s_inOnIdle = FALSE;

 }
 
 bool wxApp::SendIdleEvents()
 {
     bool needMore = FALSE;
 
 }
 
 bool wxApp::SendIdleEvents()
 {
     bool needMore = FALSE;
 

-    wxNode* node = wxTopLevelWindows.First();
+    wxWindowList::Node* node = wxTopLevelWindows.GetFirst();

     while (node)
     {
     while (node)
     {

-        wxWindow* win = (wxWindow*) node->Data();
+        wxWindow* win = node->GetData();

         if (SendIdleEvents(win))
             needMore = TRUE;
         if (SendIdleEvents(win))
             needMore = TRUE;

-        node = node->Next();
+        node = node->GetNext();

     }
     }

+

     return needMore;
 }
 
     return needMore;
 }
 


@@ -309,10 +489,10 @@ bool wxApp::SendIdleEvents( wxWindow* win )
     wxIdleEvent event;
     event.SetEventObject(win);
 
     wxIdleEvent event;
     event.SetEventObject(win);
 

-    win->OnInternalIdle();
-

     win->ProcessEvent(event);
 
     win->ProcessEvent(event);
 

+    win->OnInternalIdle();
+

     if (event.MoreRequested())
         needMore = TRUE;
 
     if (event.MoreRequested())
         needMore = TRUE;
 


@@ -346,11 +526,12 @@ bool wxApp::Initialized()
 
 bool wxApp::Pending()
 {
 
 bool wxApp::Pending()
 {

-    return FALSE;
+    return (gtk_events_pending() > 0);

 }
 
 void wxApp::Dispatch()
 {
 }
 
 void wxApp::Dispatch()
 {

+    gtk_main_iteration();

 }
 
 void wxApp::DeletePendingObjects()
 }
 
 void wxApp::DeletePendingObjects()


@@ -362,34 +543,28 @@ void wxApp::DeletePendingObjects()
 
         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()
-{
-    if (m_topWindow) return m_topWindow;
-    wxNode *node = wxTopLevelWindows.First();
-    if (!node) return (wxWindow *) NULL;
-    return (wxWindow*)node->Data();
-}
-
-void wxApp::SetTopWindow( wxWindow *win )
-{
-    m_topWindow = win;
-}
-

 bool wxApp::Initialize()
 {
 bool wxApp::Initialize()
 {

-    wxBuffer = new char[BUFSIZ + 512];
+    wxBuffer = new wxChar[BUFSIZ + 512];

 
     wxClassInfo::InitializeClasses();
 
     wxSystemSettings::Init();
 
 
     wxClassInfo::InitializeClasses();
 
     wxSystemSettings::Init();
 

+    // 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
+

 /*
     wxTheFontNameDirectory =  new wxFontNameDirectory;
     wxTheFontNameDirectory->Initialize();
 /*
     wxTheFontNameDirectory =  new wxFontNameDirectory;
     wxTheFontNameDirectory->Initialize();


@@ -407,11 +582,6 @@ bool wxApp::Initialize()
     wxInitializeResourceSystem();
 #endif
 
     wxInitializeResourceSystem();
 #endif
 

-    wxImage::InitStandardHandlers();
-
-    /* no global cursor under X
-       g_globalCursor = new wxCursor; */
-

     wxModule::RegisterModules();
     if (!wxModule::InitializeModules()) return FALSE;
 
     wxModule::RegisterModules();
     if (!wxModule::InitializeModules()) return FALSE;
 


@@ -445,11 +615,16 @@ void wxApp::CleanUp()
 
     wxDeleteStockLists();
 
 
     wxDeleteStockLists();
 

-    wxImage::CleanUpHandlers();
-

     delete wxTheApp;
     wxTheApp = (wxApp*) NULL;
 
     delete wxTheApp;
     wxTheApp = (wxApp*) NULL;
 

+    // 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
+

     wxSystemSettings::Done();
 
     delete[] wxBuffer;
     wxSystemSettings::Done();
 
     delete[] wxBuffer;


@@ -460,23 +635,20 @@ void wxApp::CleanUp()
 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
     if (wxDebugContext::CountObjectsLeft() > 0)
     {
 #if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
     if (wxDebugContext::CountObjectsLeft() > 0)
     {

-        wxLogDebug("There were memory leaks.\n");
+        wxLogDebug(wxT("There were memory leaks.\n"));

         wxDebugContext::Dump();
         wxDebugContext::PrintStatistics();
     }
         wxDebugContext::Dump();
         wxDebugContext::PrintStatistics();
     }

-#endif
+#endif // Debug

 
 

+#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;
     // 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;

-}
-
-wxLog *wxApp::CreateLogTarget()
-{
-    return new wxLogGui;
+#endif // wxUSE_LOG

 }
 
 //-----------------------------------------------------------------------------
 }
 
 //-----------------------------------------------------------------------------


@@ -487,15 +659,23 @@ int wxEntry( int argc, char *argv[] )
 {
     gtk_set_locale();
 
 {
     gtk_set_locale();
 

+#if wxUSE_WCHAR_T
+    if (!wxOKlibc()) wxConvCurrent = &wxConvLocal;
+#else
+    if (!wxOKlibc()) wxConvCurrent = (wxMBConv*) NULL;
+#endif
+

     gtk_init( &argc, &argv );
 
     gtk_init( &argc, &argv );
 

+    wxSetDetectableAutoRepeat( TRUE );
+

     if (!wxApp::Initialize())
         return -1;
 
     if (!wxTheApp)
     {
         wxCHECK_MSG( wxApp::GetInitializerFunction(), -1,
     if (!wxApp::Initialize())
         return -1;
 
     if (!wxTheApp)
     {
         wxCHECK_MSG( wxApp::GetInitializerFunction(), -1,

-                     "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
+                     wxT("wxWindows error: No initializer - use IMPLEMENT_APP macro.\n") );

 
         wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 
 
         wxAppInitializerFunction app_ini = wxApp::GetInitializerFunction();
 


@@ -504,53 +684,72 @@ int wxEntry( int argc, char *argv[] )
         wxTheApp = (wxApp*) test_app;
     }
 
         wxTheApp = (wxApp*) test_app;
     }
 

-    wxCHECK_MSG( wxTheApp, -1, "wxWindows error: no application object" );
+    wxCHECK_MSG( wxTheApp, -1, wxT("wxWindows error: no application object") );

 
     wxTheApp->argc = argc;
 
     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;
     wxTheApp->argv = argv;

+#endif

 
 

-    char name[200];
-    strcpy( name, argv[0] );
-    strcpy( name, wxFileNameFromPath(name) );
+    wxString name(wxFileNameFromPath(argv[0]));

     wxStripExtension( name );
     wxTheApp->SetAppName( name );
 
     wxStripExtension( name );
     wxTheApp->SetAppName( name );
 

-    if (!wxTheApp->OnInitGui())
-        return 0;
-
-    /* Here frames insert themselves automatically
-     * into wxTopLevelWindows by getting created
-     * in OnInit(). */
+    int retValue = 0;

 
 

-    if (!wxTheApp->OnInit())
-        return 0;
+    if ( !wxTheApp->OnInitGui() )
+        retValue = -1;

 
 

-    wxTheApp->m_initialized = (wxTopLevelWindows.Number() > 0);
+    // Here frames insert themselves automatically into wxTopLevelWindows by
+    // getting created in OnInit().
+    if ( retValue == 0 )
+    {
+        if ( !wxTheApp->OnInit() )
+            retValue = -1;
+    }

 
 

-    int retValue = 0;
+    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();

 
 

-    if (wxTheApp->Initialized())
-        retValue = wxTheApp->OnRun();
+        wxTheApp->m_initialized = wxTopLevelWindows.GetCount() != 0;

 
 

-    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
+        if (wxTheApp->Initialized())

         {
         {

-            delete topWindow;
-            wxTheApp->SetTopWindow( (wxWindow*) NULL );
+            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())
     // flush the logged messages if any
     wxLog *log = wxLog::GetActiveTarget();
     if (log != NULL && log->HasPendingMessages())


@@ -562,9 +761,37 @@ int wxEntry( int argc, char *argv[] )
     wxLog *oldlog = wxLog::SetActiveTarget(new wxLogStderr);
     if ( oldlog )
         delete oldlog;
     wxLog *oldlog = wxLog::SetActiveTarget(new wxLogStderr);
     if ( oldlog )
         delete oldlog;

+#endif // wxUSE_LOG

 
     wxApp::CleanUp();
 
     return retValue;
 }
 
 
     wxApp::CleanUp();
 
     return retValue;
 }
 

+#include "wx/gtk/info.xpm"
+#include "wx/gtk/error.xpm"
+#include "wx/gtk/question.xpm"
+#include "wx/gtk/warning.xpm"
+
+wxIcon
+wxApp::GetStdIcon(int which) const
+{
+    switch(which)
+    {
+        case wxICON_INFORMATION:
+            return wxIcon(info_xpm);
+
+        case wxICON_QUESTION:
+            return wxIcon(question_xpm);
+
+        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);
+    }
+}