more thread fixes

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@1421 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/msw/app.cpp

@@ -798,7 +798,13 @@ bool wxApp::DoMessage()
         {
             s_hadGuiLock = FALSE;
 
+            // leave out WM_COMMAND messages: too dangerous, sometimes
+            // the message will be processed twice
+            if ( !wxIsWaitingForThread() ||
+                 s_currentMsg.message != WM_COMMAND )
+            {
                 s_aSavedMessages.Add(s_currentMsg);
+            }
 
             return TRUE;
         }