Implement abstract class for wxuniversal in wxQT, thanks @seandepagnier

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@77924 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/qt/window.cpp

@@ -81,6 +81,9 @@ void wxQtShortcutHandler::activated()
 
 //##############################################################################
 
+#ifdef __WXUNIVERSAL__
+    IMPLEMENT_ABSTRACT_CLASS(wxWindow, wxWindowBase)
+#endif // __WXUNIVERSAL__
 
 // We use the QObject property capabilities to store the wxWindow pointer, so we
 // don't need to use a separate lookup table. We also want to use it in the proper