GetTrackUsage
The GetTrackUsage function allows your application to determine whether a track is used in a movie, its preview, its poster, or a combination of these. Your application can specify how a track is used by calling the SetTrackUsage function, which is described in the previous section.
pascal long GetTrackUsage (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 GetTrackUsage function returns a long integer that contains flags indicating the track's usage. The following flags are defined (unused flags are set to 0):
trackUsageInMovie
- The track is used in the movie. If this flag is set to 1, the track is used in the movie.
trackUsageInPreview
- The track is used in the movie preview. If this flag is set to 1, the track is used in the preview.
trackUsageInPoster
- The track is used in the movie poster. If this flag is set to 1, the track is used in the poster.
ERROR CODES
| invalidTrack | -2009 | This track is corrupted or invalid |
