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(3alleg4)