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al_destroy_bitmap - Allegro 5 API
#include <allegro5/allegro.h> void al_destroy_bitmap(ALLEGRO_BITMAP *bitmap)
Destroys the given bitmap, freeing all resources used by it. This function does nothing if the bitmap argument is NULL. As a convenience, if the calling thread is currently targeting the bitmap then the bitmap will be untargeted first. The new target bitmap is unspecified. (since: 5.0.10, 5.1.6) Otherwise, it is an error to destroy a bitmap while it (or a sub-bitmap) is the target bitmap of any thread.