extern bool x_alloc_nearest_color (struct frame *, Colormap, XColor *);
extern void x_query_color (struct frame *f, XColor *);
extern void x_clear_area (Display *, Window, int, int, int, int);
extern bool x_alloc_nearest_color (struct frame *, Colormap, XColor *);
extern void x_query_color (struct frame *f, XColor *);
extern void x_clear_area (Display *, Window, int, int, int, int);