Restored mouse sensitivity for static box and static bitmap

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@32338 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/statbox.h

@@ -39,6 +39,9 @@ public:
                 long style = 0,
                 const wxString& name = wxStaticBoxNameStr);
 
+    /// Implementation
+    virtual WXLRESULT MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam);
+
 protected:
     virtual wxSize DoGetBestSize() const;