al_lock_bitmap_blocked - Man Page

#include <allegro5/allegro.h>

ALLEGRO_LOCKED_REGION *al_lock_bitmap_blocked(ALLEGRO_BITMAP *bitmap,
   int flags)

Like al_lock_bitmap(3), but allows locking bitmaps with a blocked pixel format (i.e. a format for which al_get_pixel_block_width(3) or al_get_pixel_block_height(3) do not return 1) in that format. To that end, this function also does not allow format conversion. For bitmap formats with a block size of 1, this function is identical to calling al_lock_bitmap(bmp, al_get_bitmap_format(bmp), flags).

5.1.9

al_lock_bitmap(3), al_lock_bitmap_region_blocked(3)

al_lock_bitmap(3), al_lock_bitmap_region_blocked(3), al_unlock_bitmap(3).