Skip site navigation (1)Skip section navigation (2)

FreeBSD Manual Pages

  
 
  

home | help 
gui_set_screen(3)		 Allegro manual 	       gui_set_screen(3)

NAME
     gui_set_screen  -	Changes the bitmap surface GUI routines draw to. Allegro
     game programming library.

SYNOPSIS
     #include <allegro.h>

     void gui_set_screen(BITMAP *bmp);

DESCRIPTION
     This function can be used to change the bitmap  surface  the  GUI	routines
     draw  to.	This  can  be useful if you are using a double buffering or page
     flipping system. Passing NULL will cause the default surface (screen) to be
     used again. Example:

	BITMAP *page[2];

	/* Allocate two pages of video memory */
	page[0] = create_video_bitmap(SCREEN_W, SCREEN_H);
	page[1] = create_video_bitmap(SCREEN_W, SCREEN_H);

	/* Page flip */
	show_video_bitmap(page[0]);
	gui_set_screen(page[0]);

SEE ALSO
     gui_get_screen(3)

Allegro 			  version 4.4.3 	       gui_set_screen(3)

Want to link to this manual page? Use this URL:
<https://man.freebsd.org/cgi/man.cgi?query=gui_set_screen&sektion=3&manpath=FreeBSD+Ports+15.1.quarterly>

home | help