IMFDXGIBuffer::SetUnknown method
Stores an arbitrary IUnknown pointer in the media buffer object.
Syntax
HRESULT SetUnknown( [in] REFIID guid, [in] IUnknown *pUnkData );
Parameters
- guid [in]
-
The identifier for the IUnknown pointer. This identifier is used as a key to retrieve the value. It can be any GUID value.
- pUnkData [in]
-
A pointer to the IUnknown interface. Set this parameter to NULL to clear a pointer that was previously set.
Return value
This method can return one of these values.
| Return code | Description |
|---|---|
|
Success. |
|
An item already exists with this key. |
Remarks
To retrieve the pointer from the object, call IMFDXGIBuffer::GetUnknown.
Requirements
|
Minimum supported client |
Windows 8 [desktop apps | Windows Store apps] |
|---|---|
|
Minimum supported server |
Windows Server 2012 [desktop apps | Windows Store apps] |
|
Header |
|
See also