gint get_preferred_height () { return prefheight; }
gint get_preferred_width () { return prefwidth; }
bool start_updating(GdkEventAny*);
bool stop_updating(GdkEventAny*);
gint get_preferred_height () { return prefheight; }
gint get_preferred_width () { return prefwidth; }
bool start_updating(GdkEventAny*);
bool stop_updating(GdkEventAny*);