X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/42bcb12b405f19915ed009f6aa323d0e48cd89f6..27a97d02eb2f3dcf031c5cbcd3c1321c6d35fce8:/src/msw/app.cpp

diff --git a/src/msw/app.cpp b/src/msw/app.cpp
index 97db714527..3424745eaf 100644
--- a/src/msw/app.cpp
+++ b/src/msw/app.cpp
@@ -724,15 +724,33 @@ int wxEntry(WXHINSTANCE hInstance,
 
         int retValue = 0;
 
-        if ( wxTheApp->OnInit() )
+        // 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 = 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.
+            {
+                // we want to initialize, but not run or exit immediately.
                 return 1;
+            }
         }
         //else: app initialization failed, so we skipped OnRun()
 
@@ -1262,12 +1280,22 @@ void wxExit()
 }
 
 // Yield to incoming messages
+
+static bool gs_inYield = FALSE;
+
 bool wxYield()
 {
     // disable log flushing from here because a call to wxYield() shouldn't
     // normally result in message boxes popping up &c
     wxLog::Suspend();
 
+#ifdef __WXDEBUG__
+    if (gs_inYield)
+        wxFAIL_MSG( wxT("wxYield called recursively" ) );
+#endif
+
+    gs_inYield = TRUE;
+
     // 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;
@@ -1289,9 +1317,20 @@ bool wxYield()
     // let the logs be flashed again
     wxLog::Resume();
 
+    gs_inYield = FALSE;
+
     return TRUE;
 }
 
+// Yield to incoming messages; but fail silently if recursion is detected.
+bool wxYieldIfNeeded()
+{
+    if (gs_inYield)
+        return FALSE;
+
+    return wxYield();
+}
+
 bool wxHandleFatalExceptions(bool doit)
 {
 #if wxUSE_ON_FATAL_EXCEPTION
@@ -1301,7 +1340,8 @@ bool wxHandleFatalExceptions(bool doit)
     return TRUE;
 #else
     wxFAIL_MSG(_T("set wxUSE_ON_FATAL_EXCEPTION to 1 to sue this function"));
-
+	
+	(void)doit;
     return FALSE;
 #endif
 }