is_memory_bitmap - Man Page

#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(3), is_planar_bitmap(3)

create_bitmap(3), create_bitmap_ex(3), is_linear_bitmap(3), is_planar_bitmap(3).