Fix Tab navigation when focused control is disabled.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@65154 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/window.h

@@ -590,6 +590,8 @@ protected:
                                           int& x, int& y,
                                           int& w, int& h) const;
 
+    bool MSWEnableHWND(WXHWND hWnd, bool enable);
+
 private:
     // common part of all ctors
     void Init();