virtual void configureRequestHandler(const XConfigureRequestEvent &e);
virtual void unmapHandler(const XUnmapEvent &e);
virtual void destroyHandler(const XDestroyWindowEvent &e);
virtual void configureRequestHandler(const XConfigureRequestEvent &e);
virtual void unmapHandler(const XUnmapEvent &e);
virtual void destroyHandler(const XDestroyWindowEvent &e);