al_unlock_bitmap - Man Page

#include <allegro5/allegro.h>

void al_unlock_bitmap(ALLEGRO_BITMAP *bitmap)

Unlock a previously locked bitmap or bitmap region. If the bitmap is a video bitmap, the texture will be updated to match the system memory copy (unless it was locked read only).

al_lock_bitmap(3), al_lock_bitmap_region(3), al_lock_bitmap_blocked(3), al_lock_bitmap_region_blocked(3)

al_is_bitmap_locked(3), ALLEGRO_LOCKED_REGION(3), al_lock_bitmap(3), al_lock_bitmap_region(3).