+ wxClassInfo* info = NULL;
+#ifdef __WXUNIVERSAL__
+# if defined(__WXMSW__)
+ info = CLASSINFO(wxWindowMSW);
+# elif defined(__WXGTK__)
+ info = CLASSINFO(wxWindowGTK);
+# elif defined(__WXMGL__)
+ info = CLASSINFO(wxWindowMGL);
+# elif defined(__WXMAC__)
+ info = CLASSINFO(wxWindowMac);
+# elif defined(__WXMOTIF__)
+ info = CLASSINFO(wxWindowMotif);
+# endif
+#else
+ info = CLASSINFO(wxWindow);
+#endif
+
+ wxASSERT_MSG( m_isWindow == IsKindOf(info),