Inside Macintosh: QuickTime /

Chapter 2 - Movie Toolbox / Movie Toolbox Reference

Functions for Getting and Playing Movies / Disabling Movies and Tracks

SetTrackEnabled

The SetTrackEnabled function allows your application to enable and disable a track. The Movie Toolbox services only enabled tracks.

pascal void SetTrackEnabled (Track theTrack, Boolean isEnabled);

theTrack

Specifies the track for this operation. Your application obtains this track identifier from such Movie Toolbox functions as NewMovieTrack and GetMovieTrack (described on page 2-136 and page 2-188, respectively).

isEnabled

Enables or disables the track. Set this parameter to true to enable the track. Set this parameter to false to disable the track.

SPECIAL CONSIDERATIONS

When you disable a track, the Movie Toolbox may release system resources that are used by the track, including allocated memory.

ERROR CODES

invalidTrack

-2009

This track is corrupted or invalid

SEE ALSO

You can determine whether a track is enabled by calling the GetTrackEnabled function, which is described in the next section.