IWMOutputMediaProps::GetStreamGroupName 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 It has been superseded by Source Reader and Sink Writer.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 GetStreamGroupName method is not implemented in this release, and returns the empty string.
Syntax
HRESULT GetStreamGroupName(
[out] WCHAR *pwszName,
[in, out] WORD *pcchName
);
Parameters
[out] pwszName
Pointer to a wide-character null-terminated string containing the name. Pass NULL to retrieve the length of the name.
[in, out] pcchName
On input, a pointer to a variable containing the length of the pwszName array in wide characters (2 bytes). On output, and if the method succeeds, the variable contains the length of the name, including the terminating null character.
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 pcchName parameter is NULL. |
|
The buffer pointed to by the pwszName parameter is not large enough. |
Remarks
You should make two calls to GetStreamGroupName. On the first call, pass NULL as pwszName. On return, the value pointed to by pcchName is set to the number of wide characters, including the terminating null character, required to hold the stream group name. Then you can allocate the required amount of memory for the string and pass a pointer to it as pwszName on the second call.
Requirements
| 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) |