IWMWriterPostViewCallback::AllocateForPostView 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 It has been superseded by Source Reader and Sink Writer.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 AllocateForPostView method allocates a buffer for use in postviewing operations. The application implements this method.
Syntax
HRESULT AllocateForPostView(
[in] WORD wStreamNum,
[in] DWORD cbBuffer,
[out] INSSBuffer **ppBuffer,
[in] void *pvContext
);
Parameters
[in] wStreamNum
WORD containing the stream number.
[in] cbBuffer
Size of ppBuffer, in bytes.
[out] ppBuffer
Pointer to a pointer to an INSSBuffer interface.
[in] pvContext
Generic pointer, for use by the application.
Return value
This method is implemented by the application. It should return S_OK.
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) |