+#elif defined(__WXMAC__)
+ #include "wx/mac/toplevel.h"
+ #define wxTopLevelWindowNative wxTopLevelWindowMac
+#elif defined(__WXCOCOA__)
+ #include "wx/cocoa/toplevel.h"
+ #define wxTopLevelWindowNative wxTopLevelWindowCocoa
+#elif defined(__WXPM__)
+ #include "wx/os2/toplevel.h"
+ #define wxTopLevelWindowNative wxTopLevelWindowOS2
+#elif defined(__WXMOTIF__)
+ #include "wx/motif/toplevel.h"
+ #define wxTopLevelWindowNative wxTopLevelWindowMotif