voice_ramp_volume - Man Page
Starts a volume ramp for a voice. Allegro game programming library.
Synopsis
#include <allegro.h>
void voice_ramp_volume(int voice, int time, int endvol);
Description
Starts a volume ramp (crescendo or diminuendo) from the current volume to the specified ending volume, lasting for time milliseconds. The volume is a value in the range 0-255.
See Also
Referenced By
voice_set_volume(3), voice_stop_volumeramp(3).
version 4.4.3 Allegro manual