]> git.saurik.com Git - wxWidgets.git/blobdiff - src/msw/app.cpp
compilation fix for non-threaded compilation (threads are still broken
[wxWidgets.git] / src / msw / app.cpp
index 36199a3d67642da4c2a9b72eaa5cf781094e511c..eb56bcfa0507cb1dd7cfd84f671e68fc42bc40b2 100644 (file)
@@ -19,7 +19,6 @@
 
 #ifdef __GNUG__
     #pragma implementation "app.h"
-    #pragma implementation "appbase.h"
 #endif
 
 // For compilers that support precompilation, includes "wx.h".
@@ -44,8 +43,8 @@
     #include "wx/msgdlg.h"
     #include "wx/intl.h"
     #include "wx/dynarray.h"
-#   include "wx/wxchar.h"
-#   include "wx/icon.h"
+    #include "wx/wxchar.h"
+    #include "wx/icon.h"
 #endif
 
 #include "wx/log.h"
 
 #include "wx/msw/msvcrt.h"
 
+// ----------------------------------------------------------------------------
+// conditional compilation
+// ----------------------------------------------------------------------------
+
+// The macro _WIN32_IE is defined by commctrl.h (unless it had already been
+// defined before) and shows us what common control features are available
+// during the compile time (it doesn't mean that they will be available during
+// the run-time, use GetComCtl32Version() to test for them!). The possible
+// values are:
+//
+// 0x0200     for comctl32.dll 4.00 shipped with Win95/NT 4.0
+// 0x0300                      4.70              IE 3.x
+// 0x0400                      4.71              IE 4.0
+// 0x0401                      4.72              IE 4.01 and Win98
+// 0x0500                      5.00              IE 5.x and NT 5.0 (Win2000)
+
+#ifndef _WIN32_IE
+    // minimal set of features by default
+    #define _WIN32_IE 0x0200
+#endif
+
+#if _WIN32_IE >= 0x0300
+    #include <shlwapi.h>
+#endif
+
 // ---------------------------------------------------------------------------
 // global variables
 // ---------------------------------------------------------------------------
@@ -98,29 +122,22 @@ extern wxChar *wxBuffer;
 extern wxChar *wxOsVersion;
 extern wxList *wxWinHandleList;
 extern wxList WXDLLEXPORT wxPendingDelete;
-#if wxUSE_THREADS
-extern wxList *wxPendingEvents;
-extern wxCriticalSection *wxPendingEventsLocker;
-#endif
 extern void wxSetKeyboardHook(bool doIt);
 extern wxCursor *g_globalCursor;
 
-HINSTANCE wxhInstance = 0;
 MSG s_currentMsg;
 wxApp *wxTheApp = 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::MSWCreate() supposes this
-wxChar wxFrameClassName[]         = T("wxFrameClass");
-wxChar wxFrameClassNameNoRedraw[] = T("wxFrameClassNR");
-wxChar wxMDIFrameClassName[]      = T("wxMDIFrameClass");
-wxChar wxMDIFrameClassNameNoRedraw[] = T("wxMDIFrameClassNR");
-wxChar wxMDIChildFrameClassName[] = T("wxMDIChildFrameClass");
-wxChar wxMDIChildFrameClassNameNoRedraw[] = T("wxMDIChildFrameClassNR");
-wxChar wxPanelClassName[]         = T("wxPanelClass");
-wxChar wxCanvasClassName[]        = T("wxCanvasClass");
+const wxChar *wxFrameClassName         = wxT("wxFrameClass");
+const wxChar *wxFrameClassNameNoRedraw = wxT("wxFrameClassNR");
+const wxChar *wxMDIFrameClassName      = wxT("wxMDIFrameClass");
+const wxChar *wxMDIFrameClassNameNoRedraw = wxT("wxMDIFrameClassNR");
+const wxChar *wxMDIChildFrameClassName = wxT("wxMDIChildFrameClass");
+const wxChar *wxMDIChildFrameClassNameNoRedraw = wxT("wxMDIChildFrameClassNR");
+const wxChar *wxPanelClassName         = wxT("wxPanelClass");
+const wxChar *wxCanvasClassName        = wxT("wxCanvasClass");
 
 HICON wxSTD_FRAME_ICON = (HICON) NULL;
 HICON wxSTD_MDICHILDFRAME_ICON = (HICON) NULL;
@@ -132,17 +149,7 @@ HICON wxDEFAULT_MDIPARENTFRAME_ICON = (HICON) NULL;
 
 HBRUSH wxDisableButtonBrush = (HBRUSH) 0;
 
-LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
-
-#if defined(__WIN95__) && !defined(__TWIN32__)
-    #define wxUSE_RICHEDIT 1
-#else
-    #define wxUSE_RICHEDIT 0
-#endif
-
-#if wxUSE_RICHEDIT
-    static HINSTANCE gs_hRichEdit = (HINSTANCE) NULL;
-#endif
+LRESULT WXDLLEXPORT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 
 // ===========================================================================
 // implementation
@@ -152,7 +159,6 @@ LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
 // wxApp
 // ---------------------------------------------------------------------------
 
-#if !USE_SHARED_LIBRARY
     IMPLEMENT_DYNAMIC_CLASS(wxApp, wxEvtHandler)
 
     BEGIN_EVENT_TABLE(wxApp, wxEvtHandler)
@@ -160,7 +166,6 @@ LRESULT APIENTRY wxWndProc(HWND, UINT, WPARAM, LPARAM);
         EVT_END_SESSION(wxApp::OnEndSession)
         EVT_QUERY_END_SESSION(wxApp::OnQueryEndSession)
     END_EVENT_TABLE()
-#endif
 
 //// Initialize
 bool wxApp::Initialize()
@@ -176,14 +181,11 @@ bool wxApp::Initialize()
     wxClassInfo::InitializeClasses();
 
 #if wxUSE_RESOURCES
-    wxGetResource(T("wxWindows"), T("OsVersion"), &wxOsVersion);
+    wxGetResource(wxT("wxWindows"), wxT("OsVersion"), &wxOsVersion);
 #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.
 #if wxUSE_THREADS
-    wxPendingEvents = new wxList();
-    wxPendingEventsLocker = new wxCriticalSection();
+    wxPendingEventsLocker = new wxCriticalSection;
 #endif
 
     wxTheColourDatabase = new wxColourDatabase(wxKEY_STRING);
@@ -201,15 +203,6 @@ bool wxApp::Initialize()
 #if defined(__WIN95__)
     InitCommonControls();
 
-#if wxUSE_RICHEDIT
-    gs_hRichEdit = LoadLibrary(T("RICHED32.DLL"));
-
-    if (gs_hRichEdit == (HINSTANCE) NULL)
-    {
-        wxLogError(_("Could not initialise Rich Edit DLL"));
-    }
-#endif // wxUSE_RICHEDIT
-
 #endif // __WIN95__
 
 #if wxUSE_OLE
@@ -227,20 +220,23 @@ bool wxApp::Initialize()
 
 #if wxUSE_CTL3D
     if (!Ctl3dRegister(wxhInstance))
-        wxLogError(T("Cannot register CTL3D"));
+        wxLogError(wxT("Cannot register CTL3D"));
 
     Ctl3dAutoSubclass(wxhInstance);
 #endif
 
     g_globalCursor = new wxCursor;
 
-    wxSTD_FRAME_ICON = LoadIcon(wxhInstance, T("wxSTD_FRAME"));
-    wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, T("wxSTD_MDIPARENTFRAME"));
-    wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, T("wxSTD_MDICHILDFRAME"));
+    // VZ: these icons are not in wx.rc anyhow (but should they?)!
+#if 0
+    wxSTD_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_FRAME"));
+    wxSTD_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDIPARENTFRAME"));
+    wxSTD_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxSTD_MDICHILDFRAME"));
 
-    wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, T("wxDEFAULT_FRAME"));
-    wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, T("wxDEFAULT_MDIPARENTFRAME"));
-    wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, T("wxDEFAULT_MDICHILDFRAME"));
+    wxDEFAULT_FRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_FRAME"));
+    wxDEFAULT_MDIPARENTFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDIPARENTFRAME"));
+    wxDEFAULT_MDICHILDFRAME_ICON = LoadIcon(wxhInstance, wxT("wxDEFAULT_MDICHILDFRAME"));
+#endif // 0
 
     RegisterWindowClasses();
 
@@ -248,7 +244,7 @@ bool wxApp::Initialize()
 
     LOGBRUSH lb;
     lb.lbStyle = BS_PATTERN;
-    lb.lbHatch = (int)LoadBitmap( wxhInstance, T("wxDISABLE_BUTTON_BITMAP") );
+    lb.lbHatch = (int)LoadBitmap( wxhInstance, wxT("wxDISABLE_BUTTON_BITMAP") );
     if ( lb.lbHatch )
     {
         wxDisableButtonBrush = ::CreateBrushIndirect( & lb );
@@ -281,6 +277,9 @@ bool wxApp::Initialize()
 // 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()
 {
     WNDCLASS wndclass;
@@ -301,8 +300,8 @@ bool wxApp::RegisterWindowClasses()
 
     // Register the frame window class.
     wndclass.hbrBackground = (HBRUSH)(COLOR_APPWORKSPACE + 1);
-    wndclass.style         = styleNormal;
     wndclass.lpszClassName = wxFrameClassName;
+    wndclass.style         = styleNormal;
 
     if ( !RegisterClass(&wndclass) )
     {
@@ -324,7 +323,8 @@ bool wxApp::RegisterWindowClasses()
 
     // Register the MDI frame window class.
     wndclass.hbrBackground = (HBRUSH)NULL; // paint MDI frame ourselves
-    wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
+    wndclass.lpszClassName = wxMDIFrameClassName;
+    wndclass.style         = styleNormal;
 
     if ( !RegisterClass(&wndclass) )
     {
@@ -334,7 +334,7 @@ bool wxApp::RegisterWindowClasses()
     }
 
     // "no redraw" MDI frame
-    wndclass.lpszClassName = wxMDIFrameClassName;
+    wndclass.lpszClassName = wxMDIFrameClassNameNoRedraw;
     wndclass.style         = styleNoRedraw;
 
     if ( !RegisterClass(&wndclass) )
@@ -347,6 +347,7 @@ bool wxApp::RegisterWindowClasses()
     // Register the MDI child frame window class.
     wndclass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
     wndclass.lpszClassName = wxMDIChildFrameClassName;
+    wndclass.style         = styleNormal;
 
     if ( !RegisterClass(&wndclass) )
     {
@@ -369,6 +370,7 @@ bool wxApp::RegisterWindowClasses()
     // Register the panel window class.
     wndclass.hbrBackground = (HBRUSH) GetStockObject( LTGRAY_BRUSH );
     wndclass.lpszClassName = wxPanelClassName;
+    wndclass.style         = styleNormal;
 
     if ( !RegisterClass(&wndclass) )
     {
@@ -425,11 +427,11 @@ void wxApp::ConvertToStandardCommandArgs(char* lpCmdLine)
 
         if (i < len)
         {
-            if (cmdLine.GetChar(i) == T('"')) // We found the start of a string
+            if (cmdLine.GetChar(i) == wxT('"')) // We found the start of a string
             {
                 i ++;
                 int first = i;
-                while ((i < len) && (cmdLine.GetChar(i) != T('"')))
+                while ((i < len) && (cmdLine.GetChar(i) != wxT('"')))
                     i ++;
 
                 wxString arg(cmdLine.Mid(first, (i - first)));
@@ -516,15 +518,6 @@ void wxApp::CleanUp()
 
     wxSetKeyboardHook(FALSE);
 
-#ifdef __WIN95__
-
-#if wxUSE_RICHEDIT
-    if (gs_hRichEdit != (HINSTANCE) NULL)
-        FreeLibrary(gs_hRichEdit);
-#endif
-
-#endif
-
 #if wxUSE_PENWINDOWS
     wxCleanUpPenWin();
 #endif
@@ -557,10 +550,10 @@ 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 
+    // 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();
@@ -578,7 +571,7 @@ void wxApp::CleanUp()
     // wxDebugContext, too.
     if (wxDebugContext::CountObjectsLeft(TRUE) > 0)
     {
-        wxLogDebug(T("There were memory leaks."));
+        wxLogDebug(wxT("There were memory leaks."));
         wxDebugContext::Dump();
         wxDebugContext::PrintStatistics();
     }
@@ -610,7 +603,17 @@ int wxEntry(WXHINSTANCE hInstance,
     // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
     //  deallocated memory which may be used to simulate low-memory condition)
     wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
-
+#ifdef __MWERKS__
+#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
+#endif
     // take everything into a try-except block in release build
     // FIXME other compilers must support Win32 SEH (structured exception
     //       handling) too, just find the appropriate keyword in their docs!
@@ -622,7 +625,6 @@ int wxEntry(WXHINSTANCE hInstance,
 #else
     #undef  CATCH_PROGRAM_EXCEPTIONS
 #endif
-
         wxhInstance = (HINSTANCE) hInstance;
 
         if (!wxApp::Initialize())
@@ -635,12 +637,12 @@ int wxEntry(WXHINSTANCE hInstance,
             // the IMPLEMENT_APP macro is used instead, which sets an initializer
             // function for delayed, dynamic app object construction.
             wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
-                         T("No initializer - use IMPLEMENT_APP macro.") );
+                         wxT("No initializer - use IMPLEMENT_APP macro.") );
 
             wxTheApp = (*wxApp::GetInitializerFunction()) ();
         }
 
-        wxCHECK_MSG( wxTheApp, 0, T("You have to define an instance of wxApp!") );
+        wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
 
         // save the WinMain() parameters
         wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
@@ -650,6 +652,13 @@ int wxEntry(WXHINSTANCE hInstance,
         // but this call is provided for compatibility across platforms.
         wxTheApp->OnInitGui();
 
+        // We really don't want timestamps by default, because it means
+        // we can't simply double-click on the error message and get to that
+        // line in the source. So VC++ at least, let's have a sensible default.
+#ifdef __VISUALC__
+        wxLog::SetTimestamp(NULL);
+#endif
+
         int retValue = 0;
 
         if ( wxTheApp->OnInit() )
@@ -818,7 +827,7 @@ bool wxApp::DoMessage()
     {
 #if wxUSE_THREADS
         wxASSERT_MSG( wxThread::IsMain(),
-                      T("only the main thread can process Windows messages") );
+                      wxT("only the main thread can process Windows messages") );
 
         static bool s_hadGuiLock = TRUE;
         static wxMsgArray s_aSavedMessages;
@@ -925,25 +934,6 @@ bool wxApp::ProcessIdle()
     return event.MoreRequested();
 }
 
-#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
-
-
 void wxApp::ExitMainLoop()
 {
     m_keepGoing = FALSE;
@@ -977,7 +967,7 @@ bool wxApp::ProcessMessage(WXMSG *wxmsg)
     while ( hWnd && !wndThis )
     {
         hWnd = ::GetParent(hWnd);
-        wndThis = wxFindWinFromHandle((WXHWND)hWnd);        
+        wndThis = wxFindWinFromHandle((WXHWND)hWnd);
     }
 
     // Try translations first; find the youngest window with
@@ -1026,10 +1016,11 @@ void wxApp::OnIdle(wxIdleEvent& event)
         event.RequestMore(TRUE);
     }
 
-    // If they are pending events, we must process them.
-#if wxUSE_THREADS
+    // If they 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();
-#endif
+
     s_inOnIdle = FALSE;
 }
 
@@ -1109,47 +1100,99 @@ void wxApp::OnQueryEndSession(wxCloseEvent& event)
     }
 }
 
-int wxApp::GetComCtl32Version() const
+/* static */
+int wxApp::GetComCtl32Version()
 {
-    // have we loaded COMCTL32 yet?
-    HMODULE theModule = ::GetModuleHandle(T("COMCTL32"));
-    int version = 0;
+    // cache the result
+    static int s_verComCtl32 = -1;
 
-    // if so, then we can check for the version
-    if (theModule)
+    wxCRIT_SECT_DECLARE(csComCtl32);
+    wxCRIT_SECT_LOCKER(lock, csComCtl32);
+
+    if ( s_verComCtl32 == -1 )
     {
-        // InitCommonControlsEx is unique to 4.7 and later
-        FARPROC theProc = ::GetProcAddress(theModule, "InitCommonControlsEx");
+        // initally assume no comctl32.dll at all
+        s_verComCtl32 = 0;
 
-        if (! theProc)
-        {                    // not found, must be 4.00
-            version = 400;
-        }
-        else
+        // do we have it?
+        HMODULE hModuleComCtl32 = ::GetModuleHandle(wxT("COMCTL32"));
+
+        // if so, then we can check for the version
+        if ( hModuleComCtl32 )
         {
-            // The following symbol are unique to 4.71
-            //   DllInstall
-            //   FlatSB_EnableScrollBar FlatSB_GetScrollInfo FlatSB_GetScrollPos
-            //   FlatSB_GetScrollProp FlatSB_GetScrollRange FlatSB_SetScrollInfo
-            //   FlatSB_SetScrollPos FlatSB_SetScrollProp FlatSB_SetScrollRange
-            //   FlatSB_ShowScrollBar
-            //   _DrawIndirectImageList _DuplicateImageList
-            //   InitializeFlatSB
-            //   UninitializeFlatSB
-            // we could check for any of these - I chose DllInstall
-            FARPROC theProc = ::GetProcAddress(theModule, "DllInstall");
-            if (! theProc)
-            {
-                // not found, must be 4.70
-                version = 470;
-            }
-            else
-            {                         // found, must be 4.71
-                version = 471;
-            }
+            // try to use DllGetVersion() if available in _headers_
+            #ifdef DLLVER_PLATFORM_WINDOWS // defined in shlwapi.h
+                DLLGETVERSIONPROC pfnDllGetVersion = (DLLGETVERSIONPROC)
+                    ::GetProcAddress(hModuleComCtl32, _T("DllGetVersion"));
+                if ( pfnDllGetVersion )
+                {
+                    DLLVERSIONINFO dvi;
+                    dvi.cbSize = sizeof(dvi);
+
+                    HRESULT hr = (*pfnDllGetVersion)(&dvi);
+                    if ( FAILED(hr) )
+                    {
+                        wxLogApiError(_T("DllGetVersion"), hr);
+                    }
+                    else
+                    {
+                        // this is incompatible with _WIN32_IE values, but
+                        // compatible with the other values returned by
+                        // GetComCtl32Version()
+                        s_verComCtl32 = 100*dvi.dwMajorVersion +
+                                            dvi.dwMinorVersion;
+                    }
+                }
+            #endif
+                // DllGetVersion() unavailable either during compile or
+                // run-time, try to guess the version otherwise
+                if ( !s_verComCtl32 )
+                {
+                    // InitCommonControlsEx is unique to 4.70 and later
+                    FARPROC theProc = ::GetProcAddress
+                                        (
+                                         hModuleComCtl32,
+#if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
+                                         "InitCommonControlsEx"
+#else
+                                         _T("InitCommonControlsEx")
+#endif
+                                        );
+
+                    if ( !theProc )
+                    {
+                        // not found, must be 4.00
+                        s_verComCtl32 = 400;
+                    }
+                    else
+                    {
+                        // many symbols appeared in comctl32 4.71, could use
+                        // any of them except may be DllInstall
+                        theProc = ::GetProcAddress
+                                    (
+                                     hModuleComCtl32,
+#if defined(__BORLANDC__) && (__BORLANDC__ <= 0x520)
+                                     "InitializeFlatSB"
+#else
+                                     _T("InitializeFlatSB")
+#endif
+                                    );
+                        if ( !theProc )
+                        {
+                            // not found, must be 4.70
+                            s_verComCtl32 = 470;
+                        }
+                        else
+                        {
+                            // found, must be 4.71
+                            s_verComCtl32 = 471;
+                        }
+                    }
+                }
         }
     }
-    return version;
+
+    return s_verComCtl32;
 }
 
 void wxExit()
@@ -1162,26 +1205,46 @@ void wxExit()
 // Yield to incoming messages
 bool wxYield()
 {
+    // we don't want to process WM_QUIT from here - it should be processed in
+    // the main event loop in order to stop it
+
     MSG msg;
-    // We want to go back to the main message loop
-    // if we see a WM_QUIT. (?)
-#ifdef __WXWINE__
-    while (PeekMessage(&msg, (HWND)NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
-#else
-    while (PeekMessage(&msg, NULL, 0, 0, PM_NOREMOVE) && msg.message != WM_QUIT)
-#endif
+    while ( PeekMessage(&msg, (HWND)0, 0, 0, PM_NOREMOVE) &&
+            msg.message != WM_QUIT )
     {
         if ( !wxTheApp->DoMessage() )
             break;
     }
+
     // If they are pending events, we must process them.
-#if wxUSE_THREADS
     wxTheApp->ProcessPendingEvents();
-#endif
 
     return TRUE;
 }
 
+//-----------------------------------------------------------------------------
+// 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 *topWindow = wxTheApp->GetTopWindow();
+    if ( topWindow )
+    {
+        if ( !::PostMessage(GetHwndOf(topWindow), WM_NULL, 0, 0) )
+        {
+            // should never happen
+            wxLogLastError("PostMessage(WM_NULL)");
+        }
+    }
+}
+
+//-----------------------------------------------------------------------------
+
 wxIcon
 wxApp::GetStdIcon(int which) const
 {
@@ -1197,7 +1260,7 @@ wxApp::GetStdIcon(int which) const
             return wxIcon("wxICON_WARNING");
 
         default:
-            wxFAIL_MSG(T("requested non existent standard icon"));
+            wxFAIL_MSG(wxT("requested non existent standard icon"));
             // still fall through
 
         case wxICON_HAND:
@@ -1205,19 +1268,8 @@ wxApp::GetStdIcon(int which) const
     }
 }
 
-
-HINSTANCE wxGetInstance()
-{
-    return wxhInstance;
-}
-
-void wxSetInstance(HINSTANCE hInst)
-{
-    wxhInstance = hInst;
-}
-
 // For some reason, with MSVC++ 1.5, WinMain isn't linked in properly
 // if in a separate file. So include it here to ensure it's linked.
-#if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__))
+#if (defined(__VISUALC__) && !defined(__WIN32__)) || (defined(__GNUWIN32__) && !defined(__TWIN32__) && !defined(WXMAKINGDLL))
 #include "main.cpp"
 #endif