- // do check for memory leaks on program exit
- // (another useful flag is _CRTDBG_DELAY_FREE_MEM_DF which doesn't free
- // deallocated memory which may be used to simulate low-memory condition)
-#ifndef __WXMICROWIN__
- wxCrtSetDbgFlag(_CRTDBG_LEAK_CHECK_DF);
-#endif
-
-#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 to be able to call
- // OnFatalException() if necessary
-#if wxUSE_ON_FATAL_EXCEPTION
- __try {
-#endif
- wxhInstance = (HINSTANCE) hInstance;
-
- if (!wxEntryStart(0,0))
- return 0;
-
- // create the application object or ensure that one already exists
- if (!wxTheApp)
- {
- // The app may have declared a global application object, but we recommend
- // the IMPLEMENT_APP macro is used instead, which sets an initializer
- // function for delayed, dynamic app object construction.
- wxCHECK_MSG( wxApp::GetInitializerFunction(), 0,
- wxT("No initializer - use IMPLEMENT_APP macro.") );
-
- wxTheApp = (wxApp*) (*wxApp::GetInitializerFunction()) ();
- }
-
- wxCHECK_MSG( wxTheApp, 0, wxT("You have to define an instance of wxApp!") );
-
- // save the WinMain() parameters
- wxTheApp->ConvertToStandardCommandArgs(lpCmdLine);
- wxTheApp->m_nCmdShow = nCmdShow;
-
- // 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;
-
- // it is common to create a modal dialog in OnInit() (to ask/notify the
- // user about something) but it wouldn't work if we don't change the
- // "exit on delete last frame" flag here as when this dialog is
- // deleted, the app would terminate (it was the last top level window
- // as the main frame wasn't created yet!), so disable this behaviour
- // temproarily
- bool exitOnLastFrameDelete = wxTheApp->GetExitOnFrameDelete();
- wxTheApp->SetExitOnFrameDelete(FALSE);
-
- // init the app
- retValue = wxEntryInitGui() && wxTheApp->OnInit() ? 0 : -1;
-
- // restore the old flag value
- wxTheApp->SetExitOnFrameDelete(exitOnLastFrameDelete);
-
- if ( retValue == 0 )
- {
- if ( enterLoop )
- {
- // run the main loop
- retValue = wxTheApp->OnRun();
- }
- else
- {
- // we want to initialize, but not run or exit immediately.
- return 1;
- }
- }
- //else: app initialization failed, so we skipped OnRun()
-
- wxWindow *topWindow = wxTheApp->GetTopWindow();
- if ( topWindow )
+ // 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 * const topWindow = wxTheApp->GetTopWindow();
+ if ( topWindow )
+ {
+ HWND hwndTop = GetHwndOf(topWindow);
+
+ // Do not post WM_NULL if there's already a pending WM_NULL to avoid
+ // overflowing the message queue.
+ //
+ // Notice that due to a limitation of PeekMessage() API (which handles
+ // 0,0 range specially), we have to check the range from 0-1 instead.
+ // This still makes it possible to overflow the queue with WM_NULLs by
+ // interspersing the calles to WakeUpIdle() with windows creation but
+ // it should be rather hard to do it accidentally.
+ MSG msg;
+ if ( !::PeekMessage(&msg, hwndTop, 0, 1, PM_NOREMOVE) ||
+ ::PeekMessage(&msg, hwndTop, 1, 1, PM_NOREMOVE) )
projects / wxWidgets.git / blobdiff