This is an interface, exposed by demultiplexers, that allows timed delivery of subtitle text.
For an overview of implementing the ILMDmxSubtitle interface, refer to Displaying Subtitles.
|Tracks||A read-only property containing a list of all the tracks.|
|TextTracks||A read-only property containing a list of all the text tracks.|
|SelectedTracks||A read-only property containing a list of all the selected tracks. Selected tracks receive callback notifications.|
|Callback||The user-specified callback interface that receives notifications.|
|trackid||A long value containing the track identifier.|
|selected||A VARIANT_BOOL value that indicates whether the track is selected or deselected. A value of VARIANT_TRUE selects the track. A value of VARIANT_FALSE deselects the track.|
Selects or deselects the specified track. Selected tracks receive callback notifications.
S_OK if successful; < 0 if an error occurred.
The track is not in the Tracks list.
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