DOKK / manpages / debian 10 / allegro4-doc / is_memory_bitmap.3alleg4.en
is_memory_bitmap(3alleg4) Allegro manual is_memory_bitmap(3alleg4)

is_memory_bitmap - Tells if a bitmap is a memory bitmap. Allegro game programming library.

#include <allegro.h>

int is_memory_bitmap(BITMAP *bmp);

Returns TRUE if bmp is a memory bitmap, ie. it was created by calling create_bitmap() or loaded from a grabber datafile or image file. Memory bitmaps can be accessed directly via the line pointers in the bitmap structure, eg. bmp->line[y][x] = color.

is_linear_bitmap(3alleg4), is_planar_bitmap(3alleg4)

version 4.4.2 Allegro