use unsgined int instead of int for 1 bit bitfields (SGI CC warning fix)

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

diff --git a/src/motif/app.cpp b/src/motif/app.cpp
index b40531cea5e5a8b231248c09e46ee29acca1b3c6..ef00606e5fc75f266581495f6cae0525199fc06e 100644 (file)
--- a/src/motif/app.cpp
+++ b/src/motif/app.cpp
@@ -9,28 +9,20 @@
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 
 // Licence:     wxWindows licence
 /////////////////////////////////////////////////////////////////////////////
 

-#ifdef __GNUG__
+#if defined(__GNUG__) && !defined(NO_GCC_PRAGMA)

     #pragma implementation "app.h"
 #endif
 
     #pragma implementation "app.h"
 #endif
 

+// For compilers that support precompilation, includes "wx.h".
+#include "wx/wxprec.h"
+

 #ifdef __VMS
 #define XtParent XTPARENT
 #define XtDisplay XTDISPLAY
 #endif
 
 #ifdef __VMS
 #define XtParent XTPARENT
 #define XtDisplay XTDISPLAY
 #endif
 

-#include "wx/frame.h"

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

-#include "wx/gdicmn.h"
-#include "wx/pen.h"
-#include "wx/brush.h"
-#include "wx/cursor.h"
-#include "wx/icon.h"
-#include "wx/palette.h"
-#include "wx/dc.h"
-#include "wx/dialog.h"
-#include "wx/msgdlg.h"
-#include "wx/log.h"

 #include "wx/module.h"
 #include "wx/memory.h"
 #include "wx/log.h"
 #include "wx/module.h"
 #include "wx/memory.h"
 #include "wx/log.h"


@@ -42,10 +34,6 @@
     #include "wx/thread.h"
 #endif
 
     #include "wx/thread.h"
 #endif
 

-#if wxUSE_WX_RESOURCES
-    #include "wx/resource.h"
-#endif
-

 #ifdef __VMS__
 #pragma message disable nosimpint
 #endif
 #ifdef __VMS__
 #pragma message disable nosimpint
 #endif


@@ -62,233 +50,115 @@
 
 #include <string.h>
 
 
 #include <string.h>
 

+struct wxPerDisplayData
+{
+    wxPerDisplayData()
+    {
+        m_visualInfo = NULL;
+        m_topLevelWidget = NULL;
+        m_topLevelRealizedWidget = NULL;
+    }
+
+    wxXVisualInfo* m_visualInfo;
+    Widget         m_topLevelWidget, m_topLevelRealizedWidget;
+};
+
+static void wxTLWidgetDestroyCallback(Widget w, XtPointer clientData,
+                                      XtPointer ptr);
+static WXWidget wxCreateTopLevelWidget( WXDisplay* display );
+

 extern wxList wxPendingDelete;
 extern bool wxAddIdleCallback();
 
 extern wxList wxPendingDelete;
 extern bool wxAddIdleCallback();
 

-wxApp *wxTheApp = NULL;
-

 wxHashTable *wxWidgetHashTable = NULL;
 
 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 
 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
 wxHashTable *wxWidgetHashTable = NULL;
 
 IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 
 BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)

-    EVT_IDLE(wxApp::OnIdle)
+    EVT_IDLE(wxAppBase::OnIdle)

 END_EVENT_TABLE()
 
 #ifdef __WXDEBUG__
 END_EVENT_TABLE()
 
 #ifdef __WXDEBUG__

+extern "C"
+{

     typedef int (*XErrorHandlerFunc)(Display *, XErrorEvent *);
     typedef int (*XErrorHandlerFunc)(Display *, XErrorEvent *);

+}

 
 

-    XErrorHandlerFunc gs_pfnXErrorHandler = 0;
-
-    static int wxXErrorHandler(Display *dpy, XErrorEvent *xevent)
-    {
-        // just forward to the default handler for now
-        return gs_pfnXErrorHandler(dpy, xevent);
-    }
-#endif // __WXDEBUG__
-
-long wxApp::sm_lastMessageTime = 0;
+XErrorHandlerFunc gs_pfnXErrorHandler = 0;

 
 

-bool wxApp::Initialize()
+extern "C"

 {
 {

-    wxClassInfo::InitializeClasses();
-
-    // 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
-    wxPendingEventsLocker = new wxCriticalSection();
-#endif
-
-    wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
-    wxTheColourDatabase->Initialize();
-
-    wxInitializeStockLists();
-    wxInitializeStockObjects();

 
 

-#if wxUSE_WX_RESOURCES
-    wxInitializeResourceSystem();
-#endif
+static int wxXErrorHandler(Display *dpy, XErrorEvent *xevent)
+{
+    // just forward to the default handler for now
+    return gs_pfnXErrorHandler(dpy, xevent);
+}

 
 

-    // For PostScript printing
-#if wxUSE_POSTSCRIPT
-    /* Done using wxModule now
-    wxInitializePrintSetupData();
-    wxThePrintPaperDatabase = new wxPrintPaperDatabase;
-    wxThePrintPaperDatabase->CreateDatabase();
-    */
-#endif
+}
+#endif // __WXDEBUG__

 
 

-    wxBitmap::InitStandardHandlers();
+bool wxApp::Initialize(int& argcOrig, wxChar **argvOrig)
+{
+    if ( !wxAppBase::Initialize(argcOrig, argvOrig) )
+        return false;

 
     wxWidgetHashTable = new wxHashTable(wxKEY_INTEGER);
 
 
     wxWidgetHashTable = new wxHashTable(wxKEY_INTEGER);
 

-    wxModule::RegisterModules();
-    if (!wxModule::InitializeModules()) return FALSE;
+#if wxUSE_INTL
+    wxFont::SetDefaultEncoding(wxLocale::GetSystemEncoding());
+#endif

 
 

-    return TRUE;
+    return true;

 }
 
 void wxApp::CleanUp()
 {
 }
 
 void wxApp::CleanUp()
 {

+    wxAppBase::CleanUp();
+

     delete wxWidgetHashTable;
     wxWidgetHashTable = NULL;
 
     delete wxWidgetHashTable;
     wxWidgetHashTable = NULL;
 

-    wxModule::CleanUpModules();
-
-#if wxUSE_WX_RESOURCES
-    wxCleanUpResourceSystem();
-#endif
-
-    wxDeleteStockObjects() ;
-
-    // Destroy all GDI lists, etc.
-
-    wxDeleteStockLists();
-
-    delete wxTheColourDatabase;
-    wxTheColourDatabase = NULL;
-
-#if wxUSE_POSTSCRIPT
-    /* Done using wxModule now
-    wxInitializePrintSetupData(FALSE);
-    delete wxThePrintPaperDatabase;
-    wxThePrintPaperDatabase = NULL;
-    */
-#endif
-
-    wxBitmap::CleanUpHandlers();
-
-    wxClassInfo::CleanUpClasses();
+    delete m_mainLoop;

 
 

-    delete wxTheApp;
-    wxTheApp = 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
-
-#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
-    // At this point we want to check if there are any memory
-    // blocks that aren't part of the wxDebugContext itself,
-    // as a special case. Then when dumping we need to ignore
-    // wxDebugContext, too.
-    if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
+    for( wxPerDisplayDataMap::iterator it  = m_perDisplayData->begin(),
+                                       end = m_perDisplayData->end();
+         it != end; ++it )

     {
     {

-        wxLogDebug("There were memory leaks.\n");
-        wxDebugContext::Dump();
-        wxDebugContext::PrintStatistics();
+        delete it->second->m_visualInfo;
+        XtDestroyWidget( it->second->m_topLevelWidget );
+        delete it->second;

     }
     }

-#endif

 
 

-    // do it as the very last thing because everything else can log messages
-    wxLog::DontCreateOnDemand();
-    // do it as the very last thing because everything else can log messages
-    delete wxLog::SetActiveTarget(NULL);
+    delete m_perDisplayData;

 }
 
 }
 

-int wxEntry( int argc, char *argv[] )
+void wxApp::Exit()

 {
 {

-#if (defined(__WXDEBUG__) && wxUSE_MEMORY_TRACING) || wxUSE_DEBUG_CONTEXT
-    // This seems to be necessary since there are 'rogue'
-    // objects present at this point (perhaps global objects?)
-    // Setting a checkpoint will ignore them as far as the
-    // memory checking facility is concerned.
-    // Of course you may argue that memory allocated in globals should be
-    // checked, but this is a reasonable compromise.
-    wxDebugContext::SetCheckpoint();
-#endif
-
-    if (!wxApp::Initialize())
-        return FALSE;
-
-    if (!wxTheApp)
-    {
-        if (!wxApp::GetInitializerFunction())
-        {
-            printf( "wxWindows error: No initializer - use IMPLEMENT_APP macro.\n" );
-            return 0;
-        };
-
-        wxTheApp = (wxApp*) (* wxApp::GetInitializerFunction()) ();
-    };
-
-    if (!wxTheApp)
-    {
-        printf( "wxWindows error: wxTheApp == NULL\n" );
-        return 0;
-    };
-
-    wxTheApp->SetClassName(wxFileNameFromPath(argv[0]));
-    wxTheApp->SetAppName(wxFileNameFromPath(argv[0]));
-
-    wxTheApp->argc = argc;
-    wxTheApp->argv = argv;
-
-    // GUI-specific initialization, such as creating an app context.
-    wxTheApp->OnInitGui();
-
-    // Here frames insert themselves automatically into wxTopLevelWindows by
-    // getting created in OnInit().
-
-    int retValue = 0;
-    if (wxTheApp->OnInit())
-    {
-        if (wxTheApp->Initialized()) retValue = wxTheApp->OnRun();
-    }
-
-    // flush the logged messages if any
-    wxLog *pLog = wxLog::GetActiveTarget();
-    if ( pLog != NULL && pLog->HasPendingMessages() )
-        pLog->Flush();
-
-    delete wxLog::SetActiveTarget(new wxLogStderr); // So dialog boxes aren't used
-    // for further messages
-
-    if (wxTheApp->GetTopWindow())
-    {
-        delete wxTheApp->GetTopWindow();
-        wxTheApp->SetTopWindow(NULL);
-    }
-
-    wxTheApp->DeletePendingObjects();
-
-    wxTheApp->OnExit();
-

     wxApp::CleanUp();
 
     wxApp::CleanUp();
 

-    return retValue;
-};
+    wxAppConsole::Exit();
+}

 
 

-// Static member initialization
-wxAppInitializerFunction wxAppBase::m_appInitFn = (wxAppInitializerFunction) NULL;
+// ============================================================================
+// wxApp
+// ============================================================================

 
 wxApp::wxApp()
 {
     argc = 0;
     argv = NULL;
 
 
 wxApp::wxApp()
 {
     argc = 0;
     argv = NULL;
 

-    m_eventLoop = new wxEventLoop;
+    m_mainLoop = new wxEventLoop;

     m_mainColormap = (WXColormap) NULL;
     m_appContext = (WXAppContext) NULL;
     m_mainColormap = (WXColormap) NULL;
     m_appContext = (WXAppContext) NULL;

-    m_topLevelWidget = (WXWidget) NULL;
-    m_maxRequestSize = 0;

     m_initialDisplay = (WXDisplay*) 0;
     m_initialDisplay = (WXDisplay*) 0;

+    m_perDisplayData = new wxPerDisplayDataMap;

 }
 
 wxApp::~wxApp()
 {
 }
 
 wxApp::~wxApp()
 {

-    delete m_eventLoop;
-}
-
-bool wxApp::Initialized()
-{
-    if (GetTopWindow())
-        return TRUE;
-    else
-        return FALSE;
+    wxApp::SetInstance(NULL);

 }
 
 int wxApp::MainLoop()
 }
 
 int wxApp::MainLoop()


@@ -304,41 +174,11 @@ int wxApp::MainLoop()
         XDefaultRootWindow(XtDisplay((Widget) wxTheApp->GetTopLevelWidget())),
         PropertyChangeMask);
 
         XDefaultRootWindow(XtDisplay((Widget) wxTheApp->GetTopLevelWidget())),
         PropertyChangeMask);
 

-    m_eventLoop->Run();
+    m_mainLoop->Run();

 
     return 0;
 }
 
 
     return 0;
 }
 

-// Processes an idle event.
-// Returns TRUE if more time is needed.
-bool wxApp::ProcessIdle()
-{
-    wxIdleEvent event;
-
-    return ProcessEvent(event) && event.MoreRequested();
-}
-
-void wxApp::ExitMainLoop()
-{
-    m_eventLoop->Exit();
-}
-
-// Is a message/event pending?
-bool wxApp::Pending()
-{
-    XFlush(XtDisplay( (Widget) wxTheApp->GetTopLevelWidget() ));
-
-    // Fix by Doug from STI, to prevent a stall if non-X event
-    // is found.
-    return ((XtAppPending( (XtAppContext) GetAppContext() ) & XtIMXEvent) != 0) ;
-}
-
-// Dispatch a message.
-void wxApp::Dispatch()
-{
-    m_eventLoop->Dispatch();
-}
-

 // This should be redefined in a derived class for
 // handling property change events for XAtom IPC.
 void wxApp::HandlePropertyChange(WXEvent *event)
 // This should be redefined in a derived class for
 // handling property change events for XAtom IPC.
 void wxApp::HandlePropertyChange(WXEvent *event)


@@ -347,109 +187,20 @@ void wxApp::HandlePropertyChange(WXEvent *event)
     XtDispatchEvent((XEvent*) event); /* let Motif do the work */
 }
 
     XtDispatchEvent((XEvent*) event); /* let Motif do the work */
 }
 

-void wxApp::OnIdle(wxIdleEvent& event)
-{
-    static bool inOnIdle = FALSE;
-
-    // Avoid recursion (via ProcessEvent default case)
-    if (inOnIdle)
-        return;
-
-    inOnIdle = TRUE;
-
-    // If there are pending events, we must process them: pending events
-    // are either events to the threads other than main or events posted
-    // with wxPostEvent() functions
-    // GRG: I have moved this here so that all pending events are processed
-    //   before starting to delete any objects. This behaves better (in
-    //   particular, wrt wxPostEvent) and is coherent with wxGTK's current
-    //   behaviour. Also removed the '#if wxUSE_THREADS' around it.
-    //  Changed Mar/2000 before 2.1.14
-
-    // Flush pending events.
-    ProcessPendingEvents();
-
-    // 'Garbage' collection of windows deleted with Close().
-    DeletePendingObjects();
-
-    // flush the logged messages if any
-    wxLog *pLog = wxLog::GetActiveTarget();
-    if ( pLog != NULL && pLog->HasPendingMessages() )
-        pLog->Flush();
-
-    // Send OnIdle events to all windows
-    bool needMore = SendIdleEvents();
-
-    if (needMore)
-        event.RequestMore(TRUE);
-
-    inOnIdle = FALSE;
-}
-
-// Send idle event to all top-level windows
-bool wxApp::SendIdleEvents()
-{
-    bool needMore = FALSE;
-
-    wxWindowList::Node* node = wxTopLevelWindows.GetFirst();
-    while (node)
-    {
-        wxWindow* win = node->GetData();
-        if (SendIdleEvents(win))
-            needMore = TRUE;
-        node = node->GetNext();
-    }
-
-    return needMore;
-}
-
-// Send idle event to window and all subwindows
-bool wxApp::SendIdleEvents(wxWindow* win)
-{
-    bool needMore = FALSE;
-
-    wxIdleEvent event;
-    event.SetEventObject(win);
-    win->ProcessEvent(event);
-
-    if (event.MoreRequested())
-        needMore = TRUE;
-
-    wxWindowList::Node* node = win->GetChildren().GetFirst();
-    while (node)
-    {
-        wxWindow* win = node->GetData();
-        if (SendIdleEvents(win))
-            needMore = TRUE;
-
-        node = node->GetNext();
-    }
-    return needMore ;
-}
-
-void wxApp::DeletePendingObjects()
-{
-    wxList::Node *node = wxPendingDelete.GetFirst();
-    while (node)
-    {
-        wxObject *obj = node->GetData();
-
-        delete obj;
-
-        if (wxPendingDelete.Member(obj))
-            delete node;
-
-        // Deleting one object may have deleted other pending
-        // objects, so start from beginning of list again.
-        node = wxPendingDelete.GetFirst();
-    }
-}
-

 static char *fallbackResources[] = {
 static char *fallbackResources[] = {

-    "*menuBar.marginHeight: 0",
-    "*menuBar.shadowThickness: 1",
-    "*background: #c0c0c0",
-    "*foreground: black",
+    // better defaults for CDE under Irix
+    //
+    // TODO: do something similar for the other systems, the hardcoded defaults
+    //       below are ugly
+#ifdef __SGI__
+    wxMOTIF_STR("*sgiMode: True"),
+    wxMOTIF_STR("*useSchemes: all"),
+#else // !__SGI__
+    wxMOTIF_STR("*menuBar.marginHeight: 0"),
+    wxMOTIF_STR("*menuBar.shadowThickness: 1"),
+    wxMOTIF_STR("*background: #c0c0c0"),
+    wxMOTIF_STR("*foreground: black"),
+#endif // __SGI__/!__SGI__

     NULL
 };
 
     NULL
 };
 


@@ -457,14 +208,15 @@ static char *fallbackResources[] = {
 bool wxApp::OnInitGui()
 {
     if( !wxAppBase::OnInitGui() )
 bool wxApp::OnInitGui()
 {
     if( !wxAppBase::OnInitGui() )

-        return FALSE;
+        return false;

 
 

+    XtSetLanguageProc(NULL, NULL, NULL);

     XtToolkitInitialize() ;
     wxTheApp->m_appContext = (WXAppContext) XtCreateApplicationContext();
     XtAppSetFallbackResources((XtAppContext) wxTheApp->m_appContext, fallbackResources);
 
     Display *dpy = XtOpenDisplay((XtAppContext) wxTheApp->m_appContext,(String)NULL,NULL,
     XtToolkitInitialize() ;
     wxTheApp->m_appContext = (WXAppContext) XtCreateApplicationContext();
     XtAppSetFallbackResources((XtAppContext) wxTheApp->m_appContext, fallbackResources);
 
     Display *dpy = XtOpenDisplay((XtAppContext) wxTheApp->m_appContext,(String)NULL,NULL,

-        (const char*) wxTheApp->GetClassName(), NULL, 0,
+        wxTheApp->GetClassName().c_str(), NULL, 0,

 # if XtSpecificationRelease < 5
         (Cardinal*) &argc,
 # else
 # if XtSpecificationRelease < 5
         (Cardinal*) &argc,
 # else


@@ -476,8 +228,8 @@ bool wxApp::OnInitGui()
          // if you don't log to stderr, nothing will be shown...
         delete wxLog::SetActiveTarget(new wxLogStderr);
         wxString className(wxTheApp->GetClassName());
          // if you don't log to stderr, nothing will be shown...
         delete wxLog::SetActiveTarget(new wxLogStderr);
         wxString className(wxTheApp->GetClassName());

-        wxLogError(_("wxWindows could not open display for '%s': exiting."),
-                   (const char*) className);
+        wxLogError(_("wxWidgets could not open display for '%s': exiting."),
+                   className.c_str());

         exit(-1);
     }
     m_initialDisplay = (WXDisplay*) dpy;
         exit(-1);
     }
     m_initialDisplay = (WXDisplay*) dpy;


@@ -487,22 +239,17 @@ bool wxApp::OnInitGui()
     gs_pfnXErrorHandler = XSetErrorHandler(wxXErrorHandler);
 #endif // __WXDEBUG__
 
     gs_pfnXErrorHandler = XSetErrorHandler(wxXErrorHandler);
 #endif // __WXDEBUG__
 

-    wxTheApp->m_topLevelWidget = (WXWidget) XtAppCreateShell((String)NULL, (const char*) wxTheApp->GetClassName(),
-        applicationShellWidgetClass,dpy,
-        NULL,0) ;
-

     // Add general resize proc
     XtActionsRec rec;
     // Add general resize proc
     XtActionsRec rec;

-    rec.string = "resize";
+    rec.string = wxMOTIF_STR("resize");

     rec.proc = (XtActionProc)wxWidgetResizeProc;
     XtAppAddActions((XtAppContext) wxTheApp->m_appContext, &rec, 1);
 
     GetMainColormap(dpy);
     rec.proc = (XtActionProc)wxWidgetResizeProc;
     XtAppAddActions((XtAppContext) wxTheApp->m_appContext, &rec, 1);
 
     GetMainColormap(dpy);

-    m_maxRequestSize = XMaxRequestSize((Display*) dpy);

 
     wxAddIdleCallback();
 
 
     wxAddIdleCallback();
 

-    return TRUE;
+    return true;

 }
 
 WXColormap wxApp::GetMainColormap(WXDisplay* display)
 }
 
 WXColormap wxApp::GetMainColormap(WXDisplay* display)


@@ -521,25 +268,120 @@ WXColormap wxApp::GetMainColormap(WXDisplay* display)
     return (WXColormap) c;
 }
 
     return (WXColormap) c;
 }
 

-void wxExit()
+static inline wxPerDisplayData& GetOrCreatePerDisplayData
+    ( wxPerDisplayDataMap& m, WXDisplay* display )

 {
 {

-    int retValue = 0;
-    if (wxTheApp)
-        retValue = wxTheApp->OnExit();
+    wxPerDisplayDataMap::iterator it = m.find( display );
+    if( it != m.end() && it->second != NULL )
+        return *(it->second);

 
 

-    wxApp::CleanUp();
-    /*
-    * Exit in some platform-specific way. Not recommended that the app calls this:
-    * only for emergencies.
-    */
-    exit(retValue);
+    wxPerDisplayData* nData = new wxPerDisplayData();
+    m[display] = nData;
+
+    return *nData;
+}
+
+wxXVisualInfo* wxApp::GetVisualInfo( WXDisplay* display )
+{
+    wxPerDisplayData& data = GetOrCreatePerDisplayData( *m_perDisplayData,
+                                                        display );
+    if( data.m_visualInfo )
+        return data.m_visualInfo;
+
+    wxXVisualInfo* vi = new wxXVisualInfo;
+    wxFillXVisualInfo( vi, (Display*)display );
+
+    data.m_visualInfo = vi;
+
+    return vi;
+}
+
+static void wxTLWidgetDestroyCallback(Widget w, XtPointer clientData,
+                                      XtPointer ptr)
+{
+    if( wxTheApp )
+    {
+        wxTheApp->SetTopLevelWidget( (WXDisplay*)XtDisplay(w),
+                                     (WXWidget)NULL );
+        wxTheApp->SetTopLevelRealizedWidget( (WXDisplay*)XtDisplay(w),
+                                             (WXWidget)NULL );
+    }
+}
+
+WXWidget wxCreateTopLevelWidget( WXDisplay* display )
+{
+    Widget tlw = XtAppCreateShell( (String)NULL,
+                                   wxTheApp->GetClassName().c_str(),
+                                   applicationShellWidgetClass,
+                                   (Display*)display,
+                                   NULL, 0 );
+    XtVaSetValues( tlw,
+                   XmNoverrideRedirect, True,
+                   NULL );
+
+    XtAddCallback( tlw, XmNdestroyCallback,
+                   (XtCallbackProc)wxTLWidgetDestroyCallback,
+                   (XtPointer)NULL );
+
+    return (WXWidget)tlw;
+}
+
+WXWidget wxCreateTopLevelRealizedWidget( WXDisplay* display )
+{
+    Widget rTlw = XtVaCreateWidget( "dummy_widget", topLevelShellWidgetClass,
+                                    (Widget)wxTheApp->GetTopLevelWidget(),
+                                     NULL, 0 );
+    XtSetMappedWhenManaged( rTlw, False );
+    XtRealizeWidget( rTlw );
+
+    return (WXWidget)rTlw;
+}
+
+WXWidget wxApp::GetTopLevelWidget()
+{
+    WXDisplay* display = wxGetDisplay();
+    wxPerDisplayData& data = GetOrCreatePerDisplayData( *m_perDisplayData,
+                                                        display );
+    if( data.m_topLevelWidget )
+        return (WXWidget)data.m_topLevelWidget;
+
+    WXWidget tlw = wxCreateTopLevelWidget( display );
+    SetTopLevelWidget( display, tlw );
+
+    return tlw;
+}
+
+WXWidget wxApp::GetTopLevelRealizedWidget()
+{
+    WXDisplay* display = wxGetDisplay();
+    wxPerDisplayDataMap::iterator it = m_perDisplayData->find( display );
+
+    if( it != m_perDisplayData->end() && it->second->m_topLevelRealizedWidget )
+        return (WXWidget)it->second->m_topLevelRealizedWidget;
+
+    WXWidget rTlw = wxCreateTopLevelRealizedWidget( display );
+    SetTopLevelRealizedWidget( display, rTlw );
+
+    return rTlw;
+}
+
+void wxApp::SetTopLevelWidget(WXDisplay* display, WXWidget widget)
+{
+    GetOrCreatePerDisplayData( *m_perDisplayData, display )
+        .m_topLevelWidget = (Widget)widget;
+}
+
+void wxApp::SetTopLevelRealizedWidget(WXDisplay* display, WXWidget widget)
+{
+    GetOrCreatePerDisplayData( *m_perDisplayData, display )
+        .m_topLevelRealizedWidget = (Widget)widget;

 }
 
 // Yield to other processes
 
 bool wxApp::Yield(bool onlyIfNeeded)
 {
 }
 
 // Yield to other processes
 
 bool wxApp::Yield(bool onlyIfNeeded)
 {

-    bool s_inYield = FALSE;
+    static bool s_inYield = false;

 
     if ( s_inYield )
     {
 
     if ( s_inYield )
     {


@@ -548,17 +390,17 @@ bool wxApp::Yield(bool onlyIfNeeded)
             wxFAIL_MSG( wxT("wxYield called recursively" ) );
         }
 
             wxFAIL_MSG( wxT("wxYield called recursively" ) );
         }
 

-        return FALSE;
+        return false;

     }
 
     }
 

-    s_inYield = TRUE;
+    s_inYield = true;

 
     while (wxTheApp && wxTheApp->Pending())
         wxTheApp->Dispatch();
 
 
     while (wxTheApp && wxTheApp->Pending())
         wxTheApp->Dispatch();
 

-    s_inYield = FALSE;
+    s_inYield = false;

 
 

-    return TRUE;
+    return true;

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