extern void xg_update_frame_menubar (struct frame *f);
-extern bool xg_event_is_for_menubar (struct frame *f, XEvent *event);
+extern bool xg_event_is_for_menubar (struct frame *, const XEvent * const);
extern bool xg_have_tear_offs (void);
int portion,
int position,
int whole);
-extern bool xg_event_is_for_scrollbar (struct frame *f, XEvent *event);
+extern bool xg_event_is_for_scrollbar (struct frame *, const XEvent * const);
extern int xg_get_default_scrollbar_width (void);
extern void update_frame_tool_bar (struct frame *f);