Typos fixed.

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

diff --git a/src/gtk/app.cpp b/src/gtk/app.cpp
index 2c0b307922ee67fb225c0b1084d572ca8d401d73..b7ed1c12ce07437ccbf4b89f9a2fa102721b4f25 100644 (file)
--- a/src/gtk/app.cpp
+++ b/src/gtk/app.cpp
@@ -8,7 +8,7 @@
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__
 /////////////////////////////////////////////////////////////////////////////
 
 #ifdef __GNUG__

-#pragma implementation "app.h"
+    #pragma implementation "app.h"

 #endif
 
 #include "wx/app.h"
 #endif
 
 #include "wx/app.h"


@@ -20,27 +20,24 @@
 #include "wx/font.h"
 #include "wx/settings.h"
 #include "wx/dialog.h"
 #include "wx/font.h"
 #include "wx/settings.h"
 #include "wx/dialog.h"

+

 #if wxUSE_WX_RESOURCES
 #if wxUSE_WX_RESOURCES

-#include "wx/resource.h"
+    #include "wx/resource.h"

 #endif
 #endif

+

 #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"
 

-#ifdef __SUN__
-int usleep(unsigned int useconds); 
-#endif
+#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"
 

-#include   <unistd.h> // usleep() on solaris
-

 //-----------------------------------------------------------------------------
 // global data
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // global data
 //-----------------------------------------------------------------------------


@@ -48,8 +45,12 @@ int usleep(unsigned int useconds);
 wxApp *wxTheApp = (wxApp *)  NULL;
 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 
 wxApp *wxTheApp = (wxApp *)  NULL;
 wxAppInitializerFunction wxApp::m_appInitFn = (wxAppInitializerFunction) NULL;
 

-extern wxList wxPendingDelete;
+#if wxUSE_THREADS
+extern wxList *wxPendingEvents;
+extern wxCriticalSection *wxPendingEventsLocker;
+#endif

 extern wxResourceCache *wxTheResourceCache;
 extern wxResourceCache *wxTheResourceCache;

+extern bool g_isIdle;

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


@@ -129,17 +130,86 @@ extern void wxFlushResources(void);
 // global functions
 //-----------------------------------------------------------------------------
 
 // global functions
 //-----------------------------------------------------------------------------
 

-void wxExit(void)
+void wxExit()

 {
     gtk_main_quit();
 }
 
 {
     gtk_main_quit();
 }
 

-bool wxYield(void)
+/* forward declaration */
+gint wxapp_idle_callback( gpointer WXUNUSED(data) );
+
+bool wxYield()

 {
 {

-    while (gtk_events_pending() > 0) 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)
+    for ( wxWindowList::Node *node = wxTopLevelWindows.GetFirst();
+          node;
+          node = node->GetNext() )
+    {
+        wxWindow *win = node->GetData();
+        win->OnInternalIdle();
+    }
+
+    if (wxTheApp->m_idleTag)
+    {
+        /* 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();
+
+        /* re-add idle handler */
+        wxTheApp->m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
+    }
+    else
+    {
+        while (gtk_events_pending())
+            gtk_main_iteration();
+    }
+    
+    return TRUE;
+}
+
+gint wxapp_idle_callback( gpointer WXUNUSED(data) )
+{
+    if (!wxTheApp) return TRUE;
+    
+    /* 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;
+    
+    /* wake up other threads */
+    wxMutexGuiLeave();
+    wxUsleep(0);
+    wxMutexGuiEnter();
+

     return TRUE;
 }
 
     return TRUE;
 }
 

+void wxapp_install_idle_handler()
+{
+    /* 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;
+}
+

 //-----------------------------------------------------------------------------
 // wxApp
 //-----------------------------------------------------------------------------
 //-----------------------------------------------------------------------------
 // wxApp
 //-----------------------------------------------------------------------------


@@ -150,35 +220,22 @@ BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
     EVT_IDLE(wxApp::OnIdle)
 END_EVENT_TABLE()
 
     EVT_IDLE(wxApp::OnIdle)
 END_EVENT_TABLE()
 

-gint wxapp_idle_callback( gpointer WXUNUSED(data) )
-{
-    if (wxTheApp) while (wxTheApp->ProcessIdle()) {}
-#if wxUSE_THREADS
-    wxMutexGuiLeave();
-#endif
-    usleep(10000);
-#if wxUSE_THREADS
-    wxMutexGuiEnter();
-#endif
-    return TRUE;
-}
-

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

-    
+

     m_topWindow = (wxWindow *) NULL;
     m_exitOnFrameDelete = TRUE;
     m_topWindow = (wxWindow *) NULL;
     m_exitOnFrameDelete = TRUE;

-    
+

     m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );
     m_idleTag = gtk_idle_add( wxapp_idle_callback, (gpointer) NULL );

-    
+

     m_colorCube = (unsigned char*) NULL;
 }
 
     m_colorCube = (unsigned char*) NULL;
 }
 

-wxApp::~wxApp(void)
+wxApp::~wxApp()

 {
 {

-    gtk_idle_remove( m_idleTag );
-    
+    if (m_idleTag) gtk_idle_remove( m_idleTag );
+

     if (m_colorCube) free(m_colorCube);
 }
 
     if (m_colorCube) free(m_colorCube);
 }
 


@@ -188,13 +245,13 @@ bool wxApp::OnInitGui()
 
     GdkVisual *visual = gdk_visual_get_system();
     if (visual->depth > 8) return TRUE;
 
     GdkVisual *visual = gdk_visual_get_system();
     if (visual->depth > 8) return TRUE;

-    
+

         /* this initiates the standard palette as defined by GdkImlib
            in the GNOME libraries. it ensures that all GNOME applications
            use the same 64 colormap entries on 8-bit displays so you
            can use several rather graphics-heavy applications at the
            same time.
         /* this initiates the standard palette as defined by GdkImlib
            in the GNOME libraries. it ensures that all GNOME applications
            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 );


@@ -209,49 +266,55 @@ bool wxApp::OnInitGui()
 
             gdk_color_alloc( cmap, &col );
         }
 
             gdk_color_alloc( cmap, &col );
         }

-       
+

         gtk_widget_set_default_colormap( cmap );
         */
         gtk_widget_set_default_colormap( cmap );
         */

-    
+

     /* initialize color cube for 8-bit color reduction dithering */
     /* initialize color cube for 8-bit color reduction dithering */

-    
+

     GdkColormap *cmap = gtk_widget_get_default_colormap();
     GdkColormap *cmap = gtk_widget_get_default_colormap();

-    
+

     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);
-               
-                GdkColor *colors = cmap->colors;
-                int max = 3 * (65536);
+    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;
 
                 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;
-           }
-       }
+
+                m_colorCube[ (r*1024) + (g*32) + b ] = index;
+            }
+        }

     }
 
     }
 

-    

     return TRUE;
 }
 
     return TRUE;
 }
 

-bool wxApp::ProcessIdle(void)
+bool wxApp::ProcessIdle()

 {
     wxIdleEvent event;
     event.SetEventObject( this );
 {
     wxIdleEvent event;
     event.SetEventObject( this );


@@ -270,6 +333,12 @@ void wxApp::OnIdle( wxIdleEvent &event )
 
     inOnIdle = TRUE;
 
 
     inOnIdle = TRUE;
 

+#if wxUSE_THREADS
+    /* Resend in the main thread events which have been prepared in other
+       threads */
+    ProcessPendingEvents();
+#endif
+

     /* 'Garbage' collection of windows deleted with Close(). */
     DeletePendingObjects();
 
     /* 'Garbage' collection of windows deleted with Close(). */
     DeletePendingObjects();
 


@@ -287,18 +356,19 @@ void wxApp::OnIdle( wxIdleEvent &event )
     inOnIdle = FALSE;
 }
 
     inOnIdle = FALSE;
 }
 

-bool wxApp::SendIdleEvents(void)
+bool wxApp::SendIdleEvents()

 {
     bool needMore = FALSE;
 
 {
     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;
 }
 


@@ -308,9 +378,9 @@ bool wxApp::SendIdleEvents( wxWindow* win )
 
     wxIdleEvent event;
     event.SetEventObject(win);
 
     wxIdleEvent event;
     event.SetEventObject(win);

-    
+

     win->OnInternalIdle();
     win->OnInternalIdle();

-    
+

     win->ProcessEvent(event);
 
     if (event.MoreRequested())
     win->ProcessEvent(event);
 
     if (event.MoreRequested())


@@ -328,32 +398,52 @@ bool wxApp::SendIdleEvents( wxWindow* win )
     return needMore ;
 }
 
     return needMore ;
 }
 

-int wxApp::MainLoop(void)
+int wxApp::MainLoop()

 {
     gtk_main();
     return 0;
 }
 
 {
     gtk_main();
     return 0;
 }
 

-void wxApp::ExitMainLoop(void)
+void wxApp::ExitMainLoop()

 {
     gtk_main_quit();
 }
 
 {
     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)
+#if wxUSE_THREADS
+void wxApp::ProcessPendingEvents()
+{
+    wxNode *node = wxPendingEvents->First();
+    wxCriticalSectionLocker locker(*wxPendingEventsLocker);
+
+    while (node)
+    {
+        wxEvtHandler *handler = (wxEvtHandler *)node->Data();
+
+        handler->ProcessPendingEvents();
+
+        delete node;
+
+        node = wxPendingEvents->First();
+    }
+}
+#endif // wxUSE_THREADS
+
+void wxApp::DeletePendingObjects()

 {
     wxNode *node = wxPendingDelete.First();
     while (node)
 {
     wxNode *node = wxPendingDelete.First();
     while (node)


@@ -362,19 +452,21 @@ void wxApp::DeletePendingObjects(void)
 
         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)
+wxWindow *wxApp::GetTopWindow()

 {
 {

-    if (m_topWindow) return m_topWindow;
-    wxNode *node = wxTopLevelWindows.First();
-    if (!node) return (wxWindow *) NULL;
-    return (wxWindow*)node->Data();
+    if (m_topWindow)
+        return m_topWindow;
+    else if (wxTopLevelWindows.GetCount() > 0)
+        return wxTopLevelWindows.GetFirst()->GetData();
+    else
+        return NULL;

 }
 
 void wxApp::SetTopWindow( wxWindow *win )
 }
 
 void wxApp::SetTopWindow( wxWindow *win )


@@ -382,14 +474,21 @@ void wxApp::SetTopWindow( wxWindow *win )
     m_topWindow = win;
 }
 
     m_topWindow = win;
 }
 

-bool wxApp::Initialize(void)
+bool wxApp::Initialize()

 {
 {

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

 
     wxClassInfo::InitializeClasses();
 
     wxClassInfo::InitializeClasses();

-    
+

     wxSystemSettings::Init();
     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();


@@ -403,7 +502,7 @@ bool wxApp::Initialize(void)
 
 #if wxUSE_WX_RESOURCES
     wxTheResourceCache = new wxResourceCache( wxKEY_STRING );
 
 #if wxUSE_WX_RESOURCES
     wxTheResourceCache = new wxResourceCache( wxKEY_STRING );

-  
+

     wxInitializeResourceSystem();
 #endif
 
     wxInitializeResourceSystem();
 #endif
 


@@ -411,34 +510,36 @@ bool wxApp::Initialize(void)
 
     /* no global cursor under X
        g_globalCursor = new wxCursor; */
 
     /* no global cursor under X
        g_globalCursor = new wxCursor; */

-       
+

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

-    
+

     return TRUE;
 }
 
     return TRUE;
 }
 

-void wxApp::CleanUp(void)
+void wxApp::CleanUp()

 {
     wxModule::CleanUpModules();
 
 #if wxUSE_WX_RESOURCES
     wxFlushResources();
 
 {
     wxModule::CleanUpModules();
 
 #if wxUSE_WX_RESOURCES
     wxFlushResources();
 

-    if (wxTheResourceCache) delete wxTheResourceCache;
+    if (wxTheResourceCache)
+        delete wxTheResourceCache;

     wxTheResourceCache = (wxResourceCache*) NULL;
     wxTheResourceCache = (wxResourceCache*) NULL;

-    
+

     wxCleanUpResourceSystem();
 #endif
 
     wxCleanUpResourceSystem();
 #endif
 

-    if (wxTheColourDatabase) delete wxTheColourDatabase;
+    if (wxTheColourDatabase)
+        delete wxTheColourDatabase;

     wxTheColourDatabase = (wxColourDatabase*) NULL;
     wxTheColourDatabase = (wxColourDatabase*) NULL;

-    
+

 /*
     if (wxTheFontNameDirectory) delete wxTheFontNameDirectory;
     wxTheFontNameDirectory = (wxFontNameDirectory*) NULL;
 */
 /*
     if (wxTheFontNameDirectory) delete wxTheFontNameDirectory;
     wxTheFontNameDirectory = (wxFontNameDirectory*) NULL;
 */

-    
+

     wxDeleteStockObjects();
 
     wxDeleteStockLists();
     wxDeleteStockObjects();
 
     wxDeleteStockLists();


@@ -448,27 +549,35 @@ void wxApp::CleanUp(void)
     delete wxTheApp;
     wxTheApp = (wxApp*) NULL;
 
     delete wxTheApp;
     wxTheApp = (wxApp*) NULL;
 

-    /* check for memory leaks */
+    // 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;
+
+    wxClassInfo::CleanUpClasses();
+
+    // check for memory leaks

 #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(_T("There were memory leaks.\n"));

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

-#endif
+#endif // Debug

 
 

-    /* do this as the very last thing because everything else can log messages */
+    // do this as the very last thing because everything else can log messages

     wxLog::DontCreateOnDemand();
     wxLog::DontCreateOnDemand();

-    
-    wxLog *oldLog = wxLog::SetActiveTarget( (wxLog*) NULL );
-    if (oldLog) delete oldLog;

 
 

-    wxSystemSettings::Done();
-    
-    wxClassInfo::CleanUpClasses();
-
-    delete[] wxBuffer;
+    wxLog *oldLog = wxLog::SetActiveTarget( (wxLog*) NULL );
+    if (oldLog)
+        delete oldLog;

 }
 
 wxLog *wxApp::CreateLogTarget()
 }
 
 wxLog *wxApp::CreateLogTarget()


@@ -486,15 +595,13 @@ int wxEntry( int argc, char *argv[] )
 
     gtk_init( &argc, &argv );
 
 
     gtk_init( &argc, &argv );
 

-    if (!wxApp::Initialize()) return 0;
+    if (!wxApp::Initialize())
+        return -1;

 
     if (!wxTheApp)
     {
 
     if (!wxTheApp)
     {

-        if (!wxApp::GetInitializerFunction())
-        {
-            printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
-            return 0;
-        }
+        wxCHECK_MSG( wxApp::GetInitializerFunction(), -1,
+                     _T("wxWindows error: No initializer - use IMPLEMENT_APP macro.\n") );

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


@@ -503,59 +610,67 @@ int wxEntry( int argc, char *argv[] )
         wxTheApp = (wxApp*) test_app;
     }
 
         wxTheApp = (wxApp*) test_app;
     }
 

-    if (!wxTheApp)
-    {
-        printf( "wxWindows error: wxTheApp == NULL\n" );
-        return 0;
-    }
+    wxCHECK_MSG( wxTheApp, -1, _T("wxWindows error: no application object") );

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

-    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 )
+    {
+        wxTheApp->m_initialized = wxTopLevelWindows.GetCount() != 0;

 
 

-    if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
+        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
+        wxWindow *topWindow = wxTheApp->GetTopWindow();
+        if (topWindow)

         {
         {

-            delete topWindow;
-            wxTheApp->SetTopWindow( (wxWindow*) NULL );
+            // 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();
+    }

 
 

-    /* flush the logged messages if any */
+    // flush the logged messages if any

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

+    // 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;
+

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