man lock_midi (3): Locks all the memory used by a MIDI file. Allegro game programming library.

lock_midi(3) Locks all the memory used by a MIDI file. Allegro game programming library.

SYNOPSIS

#include <allegro.h>

void lock_midi(MIDI *midi);

Under DOS, locks all the memory used by a MIDI file. You don't normally need to call this function because load_midi() does it for you.