extern int x_x_to_emacs_modifiers (struct x_display_info *, int);
extern int x_display_pixel_height (struct x_display_info *);
extern int x_display_pixel_width (struct x_display_info *);
extern int x_x_to_emacs_modifiers (struct x_display_info *, int);
extern int x_display_pixel_height (struct x_display_info *);
extern int x_display_pixel_width (struct x_display_info *);