|Microsoft DirectShow 9.0|
The GetCurrentSubpicture method retrieves the number of available subpicture streams in the current title, the currently selected subpicture stream number, and the state of the subpicture.
HRESULT GetCurrentSubpicture( ULONG *pulStreamsAvailable, ULONG *pulCurrentStream, BOOL *pbIsDisabled );
[out] Pointer to a variable of type ULONG that receives the number of available subpicture streams.
[out] Pointer to a variable of type ULONG that receives the number of the currently selected subpicture stream.
[out] Pointer to a variable of type BOOL that receives a value indicating whether the subpicture display is disabled; TRUE means it is disabled.
Returns one of the following HRESULT values.
|VFW_E_DVD_INVALIDDOMAIN||The DVD Navigator is not initialized or not in the Title domain.|
DVD content authors can specify that any particular subpicture stream on a disc is forcedly activated, meaning that the DVD authors require this stream to display whether the viewer wants to watch it or not. The DVD Navigator complies with all such commands from the disc, meaning that forcedly activated streams are displayed even if the application has disabled subpicture display with the IDvdControl2::SetSubpictureState method.
Header: Declared in Strmif.h; include Dshow.h.
Library: Use Strmiids.lib.