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al_get_parent_bitmap(3) Library Functions Manual al_get_parent_bitmap(3) 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(3). 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(3), al_is_sub_bitmap(3) Allegro reference manual al_get_parent_bitmap(3)
NAME | SYNOPSIS | DESCRIPTION | SINCE | SEE ALSO
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