QM_SetTrackVolume

QM_SetTrackVolume(movieRef; trackID; trackVolume):error
	movieRef	Longint	Movie reference
	trackID	Longint	Track ID
	trackVolume	Longint	Track volume
	error	Longint	Error result

Changes the sound volume of a track.

Parameter movieRef is the reference to the movie instance. The movie reference must have been previously obtained with a call to QM_NewMovieFromFile or QM_NewMovieFromURL.

Parameter trackID is the ID of the track.

Parameter trackVolume specifies the track's sound volume. It must be in the range of -255...255. A value of 0 means no sound at all. Negative values also mute the track, but they preserve the absolute sound volume value.

Example

`Set the volume of track ID $trackID of movie $movie to maximum

C_LONGINT($volume)

$volume:=255

$err:=QM_SetTrackVolume ($movie;$trackID;$volume)

Related commands

QM_GetTrackVolume

Returns the track's sound volume.