-class WXDLLEXPORT wxFrame;
-class WXDLLEXPORT wxMenuBar;
-class WXDLLEXPORT wxStatusBar;
-class WXDLLEXPORT wxToolBar;
+class WXDLLIMPEXP_FWD_CORE wxFrame;
+class WXDLLIMPEXP_FWD_CORE wxMenuBar;
+class WXDLLIMPEXP_FWD_CORE wxStatusBar;
+class WXDLLIMPEXP_FWD_CORE wxToolBar;