1. always create the buttons with WS_CLIPSIBLINGS style, this prevetns them

from overwriting each other when the main window is resized
2. more tweaks to MSWGetStyle() and related code, added a new, easier to use,
   version of MSWCreateControl()


git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@14313 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

include/wx/msw/button.h

@@ -69,7 +69,9 @@ protected:
     // send a notification event, return TRUE if processed
     bool SendClickEvent();
 
+    // usually overridden base class virtuals
     virtual wxSize DoGetBestSize() const;
+    virtual WXDWORD MSWGetStyle(long style, WXDWORD *exstyle) const;
 
 private:
     DECLARE_DYNAMIC_CLASS(wxButton)