IDvdInfo2::IsAudioStreamEnabled method (strmif.h)
[The feature associated with this page, DirectShow, is a legacy feature. It has been superseded by MediaPlayer, IMFMediaEngine, and Audio/Video Capture in Media Foundation. Those features have been optimized for Windows 10 and Windows 11. Microsoft strongly recommends that new code use MediaPlayer, IMFMediaEngine and Audio/Video Capture in Media Foundation instead of DirectShow, when possible. Microsoft suggests that existing code that uses the legacy APIs be rewritten to use the new APIs if possible.]
The IsAudioStreamEnabled method determines if the specified audio stream is enabled in the current title.
Syntax
HRESULT IsAudioStreamEnabled(
[in] ULONG ulStreamNum,
[out] BOOL *pbEnabled
);
Parameters
[in] ulStreamNum
Audio stream number to test.
[out] pbEnabled
Pointer to a variable of type BOOL that receives a value of TRUE if the audio stream is enabled, or FALSE otherwise.
Return value
Returns one of the following HRESULT values.
| Return code | Description |
|---|---|
|
Success. |
|
Invalid argument. |
|
The DVD Navigator is not initialized. |
Remarks
A DVD can have up to eight separate audio streams, although typically not all the streams will be enabled for each title. Use IsAudioStreamEnabled to determine whether a particular stream is enabled for the current title, and then call IDvdControl2::SelectAudioStream to select one of the enabled streams.
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | strmif.h (include Dshow.h) |
| Library | Strmiids.lib |