IWMWriterPostView::SetAllocateForPostView 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 It has been superseded by Source Reader and Sink Writer.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 SetAllocateForPostView method specifies whether the application, and not the writer, must supply the buffers.
Syntax
HRESULT SetAllocateForPostView(
[in] WORD wStreamNumber,
[in] BOOL fAllocate
);
Parameters
[in] wStreamNumber
WORD containing the stream number.
[in] fAllocate
Boolean value. Set to True if the application allocates buffers, and False if this is left to the reader.
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 stream number specified by wStreamNumber is not valid. |
|
The method was unable to create an internal structure. |
Remarks
The application can provide buffers for any of the outputs, rather than use those allocated by the reader. For example, some applications can allocate Microsoft DirectDraw® buffers.
The actual allocation of buffers is handled by the IWMReaderCallbackAdvanced interface.
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) |