Inside Macintosh: QuickTime /

Chapter 2 - Movie Toolbox / Movie Toolbox Reference

Functions for Getting and Playing Movies / Disabling Movies and Tracks

GetTrackEnabled

The GetTrackEnabled function allows your application to determine whether a track is currently enabled. The Movie Toolbox services only enabled tracks.

pascal Boolean GetTrackEnabled (Track theTrack);

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).

DESCRIPTION

The GetTrackEnabled function returns a Boolean value. The function sets this value to true if the track is enabled and false if the track is disabled.

ERROR CODES

invalidTrack

-2009

This track is corrupted or invalid

SEE ALSO

You can enable a track by calling the SetTrackEnabled function, which is described in the previous section.