Applied patch for improving event dispatching on WIN32. bug=17881. r=rods@netscape.com,michael.lowe@bigfoot.com

widget/src/windows/nsAppShell.cpp

@@ -78,13 +78,10 @@ NS_METHOD nsAppShell::Run(void)
     // Give priority to system messages (in particular keyboard, mouse,
     // timer, and paint messages).
     // Note: on Win98 and NT 5.0 we can also use PM_QS_INPUT and PM_QS_PAINT flags.
-    if (::PeekMessage(&msg, NULL, 0, WM_USER-1, PM_REMOVE)) {
-      keepGoing = (msg.message != WM_QUIT);
+    if (::PeekMessage(&msg, NULL, 0, WM_USER-1, PM_REMOVE) || 
+      ::PeekMessage(&msg, NULL, 0, 0, PM_REMOVE)) {
 
-    } else {
-      // Block and wait for any posted application message
-      keepGoing = ::GetMessage(&msg, NULL, 0, 0);
-    }
+      keepGoing = (msg.message != WM_QUIT);
 
       if (keepGoing != 0) {
         TranslateMessage(&msg);
@@ -92,6 +89,11 @@ NS_METHOD nsAppShell::Run(void)
         if (mDispatchListener)
           mDispatchListener->AfterDispatch();
       }
+    } else {
+       // Block and wait for any posted application message
+      ::WaitMessage();
+    }
+
   } while (keepGoing != 0);
   Release();
   return msg.wParam;