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