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bmp_unwrite_line - Direct access bank switching line release. Allegro game programming library.
#include <allegro.h> void bmp_unwrite_line(BITMAP *bmp);
Releases the bitmap memory after you are finished with it. You only need to call this once at the end of a drawing operation, even if you have called bmp_write_line() or bmp_read_line() several times before it.