Provided by: allegro5-doc_5.2.5.0-2_all bug

NAME

       al_get_parent_bitmap - Allegro 5 API

SYNOPSIS

              #include <allegro5/allegro.h>

              ALLEGRO_BITMAP *al_get_parent_bitmap(ALLEGRO_BITMAP *bitmap)

DESCRIPTION

       Returns  the  bitmap this bitmap is a sub-bitmap of.  Returns NULL if this bitmap is not a
       sub-bitmap.  This function always returns the real bitmap, and never a  sub-bitmap.   This
       might NOT match what was passed to al_create_sub_bitmap(3alleg5).  Consider this code, for
       instance:

              ALLEGRO_BITMAP* a = al_create_bitmap(512, 512);
              ALLEGRO_BITMAP* b = al_create_sub_bitmap(a, 128, 128, 256, 256);
              ALLEGRO_BITMAP* c = al_create_sub_bitmap(b, 64, 64, 128, 128);
              ASSERT(al_get_parent_bitmap(b) == a && al_get_parent_bitmap(c) == a);

       The assertion will pass because only a is a  real  bitmap,  and  both  b  and  c  are  its
       sub-bitmaps.

SINCE

       5.0.6, 5.1.2

SEE ALSO

       al_create_sub_bitmap(3alleg5), al_is_sub_bitmap(3alleg5)