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IltmmPlay::put_SelectedStream

Summary

Indicates which stream of the specified streamType to select (render).

Syntax

#include "ltmm.h"

Language	Syntax
C	HRESULT IltmmPlay_put_SelectedStream(pPlay, streamType, val)
C++	HRESULT put_SelectedStream(streamType, val)

Parameters

ltmmPlay_Stream streamType

The type of stream to select. Currently, only two stream types are supported: Video (ltmmPlay_Stream_Video) and Audio (ltmmPlay_Stream_Audio).

long val

Index of the stream to select (0-based).

Returns

Value	Meaning
S_OK	The function was successful.
<> S_OK	An error occurred. Refer to the Error Codes or the HRESULT error codes in the DirectShow documentation.

Comments

The index of the program is 0-based, so it should be between 0 and StreamCount(streamType) - 1, where StreamCount(streamType) is the number of streams of type streamType in the current program. You can get the number of streams of type streamType by calling IltmmPlay::get_StreamCount.

The streams of a particular type are mutually exclusive, so selecting one stream will automatically unselect the previously selected stream of the same type.

You can get the index of the current stream by calling IltmmPlay::get_SelectedStream.

If you change the current program by calling IltmmPlay::put_CurrentProgram, the stream selection might change because the number of streams of type streamType might change.

For more information about programs and streams, see the Programs and Streams topic