]> git.saurik.com Git - wxWidgets.git/blobdiff - src/os2/app.cpp
Some new interfaces in common code requires an updated module definition file.
[wxWidgets.git] / src / os2 / app.cpp
index 737de733cfca887bff142a9fa0f1d8a4bbdb5b78..40ef90f53a65c063e333dc5ada8aaf323cf736ca 100644 (file)
     #include "wx/resource.h"
 #endif
 
+#if wxUSE_TOOLTIPS
+    #include "wx/tooltip.h"
+#endif // wxUSE_TOOLTIPS
+
 #include <string.h>
 #include <ctype.h>
 
 // ---------------------------------------------------------------------------
 
 extern wxChar*                      wxBuffer;
-extern wxChar*                      wxOsVersion;
 extern wxList*                      wxWinHandleList;
 extern wxList WXDLLEXPORT           wxPendingDelete;
 extern wxCursor*                    g_globalCursor;
 
-HINSTANCE                           wxhInstance = 0;
+HAB                                 vHabmain = NULLHANDLE;
 QMSG                                svCurrentMsg;
 wxApp*                              wxTheApp = NULL;
-HAB                                 vHabmain = NULL;
-
-// FIXME why not const? and not static?
 
 // NB: all "NoRedraw" classes must have the same names as the "normal" classes
 //     with NR suffix - wxWindow::OS2Create() supposes this
@@ -92,11 +92,8 @@ HICON wxDEFAULT_MDIPARENTFRAME_ICON  = (HICON) NULL;
 
 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 
-MRESULT EXPENTRY wxWndProc( HWND
-                           ,ULONG
-                           ,MPARAM
-                           ,MPARAM
-                          );
+MRESULT EXPENTRY wxWndProc( HWND hWnd,ULONG message,MPARAM mp1,MPARAM mp2);
+MRESULT EXPENTRY wxFrameWndProc( HWND hWnd,ULONG message,MPARAM mp1,MPARAM mp2);
 
 // ===========================================================================
 // implementation
@@ -114,11 +111,35 @@ MRESULT EXPENTRY wxWndProc( HWND
         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
     END_EVENT_TABLE()
 
-//// Initialize
+//
+// Initialize
+//
 bool wxApp::Initialize(
   HAB                               vHab
 )
 {
+#if defined(wxUSE_CONSOLEDEBUG)
+  #if wxUSE_CONSOLEDEBUG
+/***********************************************/
+/* Code for using stdout debug                 */
+/* To use it you mast link app as "Window" - EK*/
+/***********************************************/
+  {
+     PPIB pib;
+     PTIB tib;
+
+    printf("In console\n");
+
+  DosGetInfoBlocks(&tib, &pib);
+/* Try morphing into a PM application. */
+//  if(pib->pib_ultype == 2)    /* VIO */
+    pib->pib_ultype = 3;
+   }
+/**********************************************/
+/**********************************************/
+  #endif //wxUSE_CONSOLEDEBUG
+#endif
+
     //
     // OS2 has to have an anchorblock
     //
@@ -139,12 +160,10 @@ bool wxApp::Initialize(
 
     wxClassInfo::InitializeClasses();
 
-#if wxUSE_RESOURCES
-    wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
+#if wxUSE_THREADS
+    wxPendingEventsLocker = new wxCriticalSection;
 #endif
 
-    // 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.
     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
     wxTheColourDatabase->Initialize();
 
@@ -157,17 +176,6 @@ bool wxApp::Initialize(
 
     wxBitmap::InitStandardHandlers();
 
-    g_globalCursor = new wxCursor;
-
-#if 0
-    wxSTD_FRAME_ICON = ::WinLoadFileIcon(wxT("wxSTD_FRAME"), TRUE);
-    wxSTD_MDIPARENTFRAME_ICON = ::WinLoadFileIcon(wxT("wxSTD_MDIPARENTFRAME"), TRUE);
-    wxSTD_MDICHILDFRAME_ICON = ::WinLoadFileIcon(wxT("wxSTD_MDICHILDFRAME"), TRUE);
-
-    wxDEFAULT_FRAME_ICON = ::WinLoadFileIcon(wxT("wxDEFAULT_FRAME"), TRUE);
-    wxDEFAULT_MDIPARENTFRAME_ICON = ::WinLoadFileIcon(wxT("wxDEFAULT_MDIPARENTFRAME"), TRUE);
-    wxDEFAULT_MDICHILDFRAME_ICON = ::WinLoadFileIcon(wxT("wxDEFAULT_MDICHILDFRAME"), TRUE);
-#endif
     RegisterWindowClasses(vHab);
     wxWinHandleList = new wxList(wxKEY_INTEGER);
 
@@ -184,15 +192,13 @@ bool wxApp::Initialize(
     if (!wxModule::InitializeModules())
         return FALSE;
     return TRUE;
-}
+} // end of wxApp::Initialize
 
+const char*                         CANTREGISTERCLASS = " Can't register Class ";
 // ---------------------------------------------------------------------------
 // RegisterWindowClasses
 // ---------------------------------------------------------------------------
 
-// TODO we should only register classes really used by the app. For this it
-//      would be enough to just delay the class registration until an attempt
-//      to create a window of this class is made.
 bool wxApp::RegisterWindowClasses(
   HAB                               vHab
 )
@@ -203,8 +209,8 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxFrameClassName
-                            ,(PFNWP)wxWndProc
-                            ,CS_SIZEREDRAW | CS_SYNCPAINT
+                            ,wxFrameWndProc
+                            ,CS_SIZEREDRAW | CS_MOVENOTIFY | CS_SYNCPAINT  | CS_CLIPCHILDREN
                             ,sizeof(ULONG)
                            ))
     {
@@ -216,9 +222,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxFrameClassNameNoRedraw
-                            ,(PFNWP)wxWndProc
-                            ,0
+                            ,wxWndProc
                             ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -229,9 +235,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxMDIFrameClassName
-                            ,(PFNWP)wxWndProc
-                            ,CS_SIZEREDRAW | CS_SYNCPAINT
-                            ,0
+                            ,wxWndProc
+                            ,CS_SIZEREDRAW | CS_MOVENOTIFY | CS_SYNCPAINT
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -242,9 +248,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxMDIFrameClassNameNoRedraw
-                            ,(PFNWP)wxWndProc
-                            ,0
+                            ,wxWndProc
                             ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -255,9 +261,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxMDIChildFrameClassName
-                            ,(PFNWP)wxWndProc
+                            ,wxWndProc
                             ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_SYNCPAINT | CS_HITTEST
-                            ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -268,9 +274,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxMDIChildFrameClassNameNoRedraw
-                            ,(PFNWP)wxWndProc
+                            ,wxWndProc
                             ,CS_HITTEST
-                            ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -281,9 +287,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxPanelClassName
-                            ,(PFNWP)wxWndProc
+                            ,wxWndProc
                             ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_HITTEST | CS_SAVEBITS | CS_SYNCPAINT
-                            ,0
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -294,9 +300,9 @@ bool wxApp::RegisterWindowClasses(
 
     if (!::WinRegisterClass( vHab
                             ,wxCanvasClassName
-                            ,(PFNWP)wxWndProc
-                            ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_HITTEST | CS_SAVEBITS | CS_SYNCPAINT
-                            ,0
+                            ,wxWndProc
+                            ,CS_MOVENOTIFY | CS_SIZEREDRAW | CS_HITTEST | CS_SAVEBITS | CS_SYNCPAINT | CS_CLIPCHILDREN
+                            ,sizeof(ULONG)
                            ))
     {
         vError = ::WinGetLastError(vHab);
@@ -305,46 +311,49 @@ bool wxApp::RegisterWindowClasses(
         return FALSE;
     }
     return TRUE;
-}
-
-//// Cleans up any wxWindows internal structures left lying around
+} // end of wxApp::RegisterWindowClasses
 
+//
+// Cleans up any wxWindows internal structures left lying around
+//
 void wxApp::CleanUp()
 {
-    //// COMMON CLEANUP
+    //
+    // COMMON CLEANUP
+    //
 
 #if wxUSE_LOG
-    // flush the logged messages if any and install a 'safer' log target: the
+
+    //
+    // Flush the logged messages if any and install a 'safer' log target: the
     // default one (wxLogGui) can't be used after the resources are freed just
     // below and the user suppliedo ne might be even more unsafe (using any
     // wxWindows GUI function is unsafe starting from now)
+    //
     wxLog::DontCreateOnDemand();
 
-    // this will flush the old messages if any
+    //
+    // This will flush the old messages if any
+    //
     delete wxLog::SetActiveTarget(new wxLogStderr);
 #endif // wxUSE_LOG
 
+    //
     // One last chance for pending objects to be cleaned up
+    //
     wxTheApp->DeletePendingObjects();
 
     wxModule::CleanUpModules();
 
 #if wxUSE_WX_RESOURCES
     wxCleanUpResourceSystem();
-
-    //  wxDefaultResourceTable->ClearTable();
 #endif
 
-    // Indicate that the cursor can be freed, so that cursor won't be deleted
-    // by deleting the bitmap list before g_globalCursor goes out of scope
-    // (double deletion of the cursor).
-    wxSetCursor(wxNullCursor);
-    delete g_globalCursor;
-    g_globalCursor = NULL;
-
     wxDeleteStockObjects();
 
+    //
     // Destroy all GDI lists, etc.
+    //
     wxDeleteStockLists();
 
     delete wxTheColourDatabase;
@@ -355,7 +364,9 @@ void wxApp::CleanUp()
     delete[] wxBuffer;
     wxBuffer = NULL;
 
-    //// PM-SPECIFIC CLEANUP
+    //
+    // PM-SPECIFIC CLEANUP
+    //
 
     // wxSetKeyboardHook(FALSE);
 
@@ -381,10 +392,8 @@ void wxApp::CleanUp()
     if (wxWinHandleList)
         delete wxWinHandleList;
 
-    // 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;
+#if wxUSE_THREADS
     delete wxPendingEventsLocker;
     // If we don't do the following, we get an apparent memory leak.
     ((wxEvtHandler&) wxDefaultValidator).ClearEventLocker();
@@ -392,6 +401,10 @@ void wxApp::CleanUp()
 
     wxClassInfo::CleanUpClasses();
 
+    // Delete Message queue
+    if (wxTheApp->m_hMq)
+        ::WinDestroyMsgQueue(wxTheApp->m_hMq);
+
     delete wxTheApp;
     wxTheApp = NULL;
 
@@ -413,8 +426,11 @@ void wxApp::CleanUp()
     // do it as the very last thing because everything else can log messages
     delete wxLog::SetActiveTarget(NULL);
 #endif // wxUSE_LOG
-}
+} // end of wxApp::CleanUp
 
+//----------------------------------------------------------------------
+// Main wxWindows entry point
+//----------------------------------------------------------------------
 int wxEntry(
   int                               argc
 , char*                             argv[]
@@ -470,31 +486,45 @@ int wxEntry(
         if (wxTheApp->OnInit())
         {
             nRetValue = wxTheApp->OnRun();
-//          nRetValue = -1;
         }
-    }
-
-    wxWindow*                       pTopWindow = wxTheApp->GetTopWindow();
-
-    if (pTopWindow)
-    {
-        // Forcibly delete the window.
-        if (pTopWindow->IsKindOf(CLASSINFO(wxFrame)) ||
-            pTopWindow->IsKindOf(CLASSINFO(wxDialog)) )
+        // Normal exit
+        wxWindow*                   pTopWindow = wxTheApp->GetTopWindow();
+        if (pTopWindow)
         {
-            pTopWindow->Close(TRUE);
-            wxTheApp->DeletePendingObjects();
-        }
-        else
-        {
-            delete pTopWindow;
-            wxTheApp->SetTopWindow(NULL);
+            // Forcibly delete the window.
+            if (pTopWindow->IsKindOf(CLASSINFO(wxFrame)) ||
+                pTopWindow->IsKindOf(CLASSINFO(wxDialog)) )
+            {
+                pTopWindow->Close(TRUE);
+                wxTheApp->DeletePendingObjects();
+            }
+            else
+            {
+                delete pTopWindow;
+                wxTheApp->SetTopWindow(NULL);
+            }
         }
     }
+    else // app initialization failed
+    {
+        wxLogLastError(" Gui initialization failed, exitting");
+    }
+#if wxUSE_CONSOLEDEBUG
+    printf("wxTheApp->OnExit ");
+    fflush(stdout);
+#endif
     wxTheApp->OnExit();
+#if wxUSE_CONSOLEDEBUG
+    printf("wxApp::CleanUp ");
+    fflush(stdout);
+#endif
     wxApp::CleanUp();
+#if wxUSE_CONSOLEDEBUG
+    printf("return %i ", nRetValue);
+    fflush(stdout);
+#endif
     return(nRetValue);
-}
+} // end of wxEntry
 
 bool wxApp::OnInitGui()
 {
@@ -510,7 +540,7 @@ bool wxApp::OnInitGui()
         return FALSE;
     }
     return TRUE;
-}
+} // end of wxApp::OnInitGui
 
 //
 // Static member initialization
@@ -528,20 +558,24 @@ wxApp::wxApp()
     m_nPrintMode = wxPRINT_WINDOWS;
     m_exitOnFrameDelete = TRUE;
     m_bAuto3D = TRUE;
-}
+    m_hMq = 0;
+} // end of wxApp::wxApp
 
 wxApp::~wxApp()
 {
-#if wxUSE_UNICODE
+    //
     // Delete command-line args
-    int i;
+    //
+#if wxUSE_UNICODE
+    int                             i;
+
     for (i = 0; i < argc; i++)
     {
         delete[] argv[i];
     }
     delete[] argv;
 #endif
-}
+} // end of wxApp::~wxApp
 
 bool wxApp::Initialized()
 {
@@ -549,7 +583,7 @@ bool wxApp::Initialized()
         return TRUE;
     else
         return FALSE;
-}
+} // end of wxApp::Initialized
 
 //
 // Get and process a message, returning FALSE if WM_QUIT
@@ -557,7 +591,7 @@ bool wxApp::Initialized()
 //
 bool wxApp::DoMessage()
 {
-    BOOL                            bRc = ::WinGetMsg(vHabmain, &m_vMsg, HWND(NULL), 0, 0);
+    BOOL                            bRc = ::WinGetMsg(vHabmain, &svCurrentMsg, HWND(NULL), 0, 0);
 
     if (bRc == 0)
     {
@@ -581,7 +615,7 @@ bool wxApp::DoMessage()
         static wxMsgArray           svSavedMessages;
 
         //
-        // if a secondary thread owns is doing GUI calls, save all messages for
+        // If a secondary thread owns is doing GUI calls, save all messages for
         // later processing - we can't process them right now because it will
         // lead to recursive library calls (and we're not reentrant)
         //
@@ -589,8 +623,10 @@ bool wxApp::DoMessage()
         {
             sbHadGuiLock = FALSE;
 
-            // leave out WM_COMMAND messages: too dangerous, sometimes
+            //
+            // Leave out WM_COMMAND messages: too dangerous, sometimes
             // the message will be processed twice
+            //
             if ( !wxIsWaitingForThread() ||
                     svCurrentMsg.msg != WM_COMMAND )
             {
@@ -601,12 +637,9 @@ bool wxApp::DoMessage()
         else
         {
             //
-            // have we just regained the GUI lock? if so, post all of the saved
+            // Have we just regained the GUI lock? if so, post all of the saved
             // messages
             //
-            // FIXME of course, it's not _exactly_ the same as processing the
-            //       messages normally - expect some things to break...
-            //
             if (!sbHadGuiLock )
             {
                 sbHadGuiLock = TRUE;
@@ -628,13 +661,13 @@ bool wxApp::DoMessage()
 #endif // wxUSE_THREADS
 
         // Process the message
-        if (!ProcessMessage((WXMSG *)&svCurrentMsg) )
+        if (!ProcessMessage((WXMSG *)&svCurrentMsg))
         {
             ::WinDispatchMsg(vHabmain, (PQMSG)&svCurrentMsg);
         }
     }
     return TRUE;
-}
+} // end of wxApp::DoMessage
 
 //////////////////////////////////////////////////////////////////////////////
 //
@@ -660,14 +693,14 @@ int wxApp::MainLoop()
 #if wxUSE_THREADS
         wxMutexGuiLeaveOrEnter();
 #endif // wxUSE_THREADS
-        while (!::WinPeekMsg(vHabmain, &svCurrentMsg, (HWND)NULL, 0, 0, PM_NOREMOVE) &&
-                ProcessIdle() )
+        while (/*Pending() &&*/ ProcessIdle())
         {
+//          wxUsleep(10000);
         }
         DoMessage();
     }
     return (int)svCurrentMsg.mp1;
-}
+} // end of wxApp::MainLoop
 
 //
 // Returns TRUE if more time is needed.
@@ -679,24 +712,7 @@ bool wxApp::ProcessIdle()
     vEvent.SetEventObject(this);
     ProcessEvent(vEvent);
     return vEvent.MoreRequested();
-}
-
-#if wxUSE_THREADS
-void wxApp::ProcessPendingEvents()
-{
-    wxNode*                         pNode = wxPendingEvents->First();
-    wxCriticalSectionLocker         vLocker(*wxPendingEventsLocker);
-
-    while (pNode)
-    {
-        wxEvtHandler*               pHandler = (wxEvtHandler *)pNode->Data();
-        pHandler->ProcessPendingEvents();
-
-        delete pNode;
-        pNode = wxPendingEvents->First();
-    }
-}
-#endif
+} // end of wxApp::ProcessIdle
 
 void wxApp::ExitMainLoop()
 {
@@ -724,13 +740,34 @@ bool wxApp::ProcessMessage(
   WXMSG*                            pWxmsg
 )
 {
-    QMSG*                           vMsg = (PQMSG)pWxmsg;
-    HWND                            hWnd = vMsg->hwnd;
+    QMSG*                           pMsg = (PQMSG)pWxmsg;
+    HWND                            hWnd = pMsg->hwnd;
     wxWindow*                       pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
     wxWindow*                       pWnd;
 
+#if wxUSE_TOOLTIPS
+    //
+    // We must relay WM_MOUSEMOVE events to the tooltip ctrl if we want it to
+    // popup the tooltip bubbles
+    //
+    if (pWndThis && (pMsg->msg == WM_MOUSEMOVE))
+    {
+        wxToolTip*                  pToolTip = pWndThis->GetToolTip();
+        if (pToolTip)
+        {
+            pToolTip->RelayEvent(pWxmsg);
+        }
+    }
+#endif // wxUSE_TOOLTIPS
+
+    //
+    // We must relay Timer events to wxTimer's processing function
     //
-    // for some composite controls (like a combobox), wndThis might be NULL
+    if (pMsg->msg == WM_TIMER)
+        wxTimerProc(NULL, 0, (int)pMsg->mp1, 0);
+
+    //
+    // For some composite controls (like a combobox), wndThis might be NULL
     // because the subcontrol is not a wxWindow, but only the control itself
     // is - try to catch this case
     //
@@ -740,14 +777,47 @@ bool wxApp::ProcessMessage(
         pWndThis = wxFindWinFromHandle((WXHWND)hWnd);
     }
 
-    // Anyone for a non-translation message? Try youngest descendants first.
-    for (pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent())
+    //
+    // Try translations first; find the youngest window with
+    // a translation table. OS/2 has case sensative accels, so
+    // this block, coded by BK, removes that and helps make them
+    // case insensative.
+    //
+    if(pMsg->msg == WM_CHAR)
     {
-        if (pWnd->OS2ProcessMessage(pWxmsg))
-            return TRUE;
+       PBYTE                        pChmsg = (PBYTE)&(pMsg->msg);
+       USHORT                       uSch  = CHARMSG(pChmsg)->chr;
+       bool                         bRc;
+
+       //
+       // Do not process keyup events
+       //
+       if(!(CHARMSG(pChmsg)->fs & KC_KEYUP))
+       {
+           if((CHARMSG(pChmsg)->fs & (KC_ALT | KC_CTRL)) && CHARMSG(pChmsg)->chr != 0)
+                CHARMSG(pChmsg)->chr = (USHORT)wxToupper((UCHAR)uSch);
+
+
+           for(pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent() )
+           {
+               if((bRc = pWnd->OS2TranslateMessage(pWxmsg)) == TRUE)
+                   break;
+           }
+
+            if(!bRc)    // untranslated, should restore original value
+                CHARMSG(pChmsg)->chr = uSch;
+        }
     }
+    //
+    // Anyone for a non-translation message? Try youngest descendants first.
+    //
+//  for (pWnd = pWndThis; pWnd; pWnd = pWnd->GetParent())
+//  {
+//      if (pWnd->OS2ProcessMessage(pWxmsg))
+//          return TRUE;
+//  }
     return FALSE;
-}
+} // end of wxApp::ProcessMessage
 
 void wxApp::OnIdle(
   wxIdleEvent&                      rEvent
@@ -758,25 +828,33 @@ void wxApp::OnIdle(
     //
     // Avoid recursion (via ProcessEvent default case)
     //
-    if (sbInOnIdle )
+    if (sbInOnIdle)
         return;
 
     sbInOnIdle = 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
+    //
+    ProcessPendingEvents();
+
     //
     // 'Garbage' collection of windows deleted with Close().
     //
     DeletePendingObjects();
 
 #if wxUSE_LOG
-    // flush the logged messages if any
-    wxLog*                          pLog = wxLog::GetActiveTarget();
-
-    if (pLog != NULL && pLog->HasPendingMessages())
-        pLog->Flush();
+    //
+    // Flush the logged messages if any
+    //
+    wxLog::FlushActive();
 #endif // wxUSE_LOG
 
+    //
     // Send OnIdle events to all windows
+    //
     if (SendIdleEvents())
     {
         //
@@ -785,21 +863,8 @@ void wxApp::OnIdle(
         //
         rEvent.RequestMore(TRUE);
     }
-
-    //
-    // If they are pending events, we must process them.
-    //
-#if wxUSE_THREADS
-    ProcessPendingEvents();
-#endif
     sbInOnIdle = FALSE;
-}
-
-void wxWakeUpIdle()
-{
-    // **** please implement me! ****
-    // Wake up the idle handler processor, even if it is in another thread...
-}
+} // end of wxApp::OnIdle
 
 // Send idle event to all top-level windows
 bool wxApp::SendIdleEvents()
@@ -816,7 +881,7 @@ bool wxApp::SendIdleEvents()
         pNode = pNode->GetNext();
     }
     return bNeedMore;
-}
+} // end of wxApp::SendIdleEvents
 
 //
 // Send idle event to window and all subwindows
@@ -845,7 +910,7 @@ bool wxApp::SendIdleEvents(
         pNode = pNode->Next();
     }
     return bNeedMore;
-}
+} // end of wxApp::SendIdleEvents
 
 void wxApp::DeletePendingObjects()
 {
@@ -866,14 +931,14 @@ void wxApp::DeletePendingObjects()
         //
         pNode = wxPendingDelete.First();
     }
-}
+} // end of wxApp::DeletePendingObjects
 
 void wxApp::OnEndSession(
   wxCloseEvent&                     WXUNUSED(rEvent))
 {
     if (GetTopWindow())
         GetTopWindow()->Close(TRUE);
-}
+} // end of wxApp::OnEndSession
 
 //
 // Default behaviour: close the application with prompts. The
@@ -888,32 +953,66 @@ void wxApp::OnQueryEndSession(
         if (!GetTopWindow()->Close(!rEvent.CanVeto()))
             rEvent.Veto(TRUE);
     }
-}
+} // end of wxApp::OnQueryEndSession
 
 void wxExit()
 {
     wxLogError(_("Fatal error: exiting"));
 
     wxApp::CleanUp();
-}
+} // end of wxExit
+
+static bool gs_inYield = FALSE;
 
+//
 // Yield to incoming messages
+//
 bool wxYield()
 {
     HAB                             vHab = 0;
     QMSG                            vMsg;
+
+    //
+    // Disable log flushing from here because a call to wxYield() shouldn't
+    // normally result in message boxes popping up &c
+    //
+    wxLog::Suspend();
+
+    gs_inYield = TRUE;
+
+    //
     // We want to go back to the main message loop
     // if we see a WM_QUIT. (?)
+    //
     while (::WinPeekMsg(vHab, &vMsg, (HWND)NULL, 0, 0, PM_NOREMOVE) && vMsg.msg != WM_QUIT)
     {
+#if wxUSE_THREADS
+        wxMutexGuiLeaveOrEnter();
+#endif // wxUSE_THREADS
         if (!wxTheApp->DoMessage())
             break;
     }
+    //
     // If they are pending events, we must process them.
-#if wxUSE_THREADS
-    wxTheApp->ProcessPendingEvents();
-#endif
+    //
+    if (wxTheApp)
+        wxTheApp->ProcessPendingEvents();
+
+    //
+    // Let the logs be flashed again
+    //
+    wxLog::Resume();
+    gs_inYield = FALSE;
     return TRUE;
+} // end of wxYield
+
+// Yield to incoming messages; but fail silently if recursion is detected.
+bool wxYieldIfNeeded()
+{
+    if (gs_inYield)
+        return FALSE;
+        
+    return wxYield();
 }
 
 wxIcon wxApp::GetStdIcon(
@@ -939,15 +1038,43 @@ wxIcon wxApp::GetStdIcon(
             return wxIcon("wxICON_ERROR");
     }
     return wxIcon("wxICON_ERROR");
-}
+} // end of wxApp::GetStdIcon
+
+//-----------------------------------------------------------------------------
+// wxWakeUpIdle
+//-----------------------------------------------------------------------------
+
+void wxWakeUpIdle()
+{
+    //
+    // Send the top window a dummy message so idle handler processing will
+    // start up again.  Doing it this way ensures that the idle handler
+    // wakes up in the right thread (see also wxWakeUpMainThread() which does
+    // the same for the main app thread only)
+    //
+    wxWindow*                       pTopWindow = wxTheApp->GetTopWindow();
 
-HINSTANCE wxGetInstance()
+    if (pTopWindow)
+    {
+        if ( !::WinPostMsg(GetHwndOf(pTopWindow), WM_NULL, (MPARAM)0, (MPARAM)0))
+        {
+            //
+            // Should never happen
+            //
+            wxLogLastError("PostMessage(WM_NULL)");
+        }
+    }
+} // end of wxWakeUpIdle
+
+HAB wxGetInstance()
 {
-    return wxhInstance;
+    return vHabmain;
 }
 
-void wxSetInstance(HINSTANCE hInst)
+void wxSetInstance(
+  HAB                               vHab
+)
 {
-    wxhInstance = hInst;
+    vHabmain = vHab;
 }