IWMReaderAdvanced::GetStreamSelected method (wmsdkidl.h)
[The feature associated with this page, Windows Media Format 11 SDK, is a legacy feature. It has been superseded by Source Reader and Sink Writer. Source Reader and Sink Writer have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use Source Reader and Sink Writer instead of Windows Media Format 11 SDK, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The GetStreamSelected method ascertains whether a particular stream is currently selected. This method can be used only when manual stream selection has been specified.
Syntax
HRESULT GetStreamSelected(
[in] WORD wStreamNum,
[out] WMT_STREAM_SELECTION *pSelection
);
Parameters
[in] wStreamNum
WORD containing the stream number. Stream numbers are in the range of 1 through 63.
[out] pSelection
Pointer to one member of the WMT_STREAM_SELECTION enumeration type.
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
|
The pSelection parameter is NULL, or the stream number is invalid. |
|
The method failed for an unspecified reason. |
|
The reader object has not opened a file yet. |
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows 2000 Professional [desktop apps only],Windows Media Format 7 SDK, or later versions of the SDK |
| Minimum supported server | Windows 2000 Server [desktop apps only] |
| Target Platform | Windows |
| Header | wmsdkidl.h (include Wmsdk.h) |
| Library | Wmvcore.lib; WMStubDRM.lib (if you use DRM) |
See also
IWMReaderAdvanced::SetStreamsSelected