man is_screen_bitmap () - Tells if a bitmap is the screen bitmap or sub bitmap. Allegro game programming library.
NAME
is_screen_bitmap - Tells if a bitmap is the screen bitmap or sub bitmap. Allegro game programming library.
SYNOPSIS
#include <allegro.h>
int is_screen_bitmap(BITMAP *bmp);
DESCRIPTION
Returns TRUE if bmp is the screen bitmap, or a sub-bitmap of the screen.