IMFDXGIBuffer::SetUnknown method (mfobjects.h)

Stores an arbitrary IUnknown pointer in the media buffer object.

Syntax

HRESULT SetUnknown(
  [in] REFIID   guid,
  [in] IUnknown *pUnkData
);

[in] guid

The identifier for the IUnknown pointer. This identifier is used as a key to retrieve the value. It can be any GUID value.

[in] pUnkData

A pointer to the IUnknown interface. Set this parameter to NULL to clear a pointer that was previously set.

This method can return one of these values.

Return code	Description
S_OK	Success.
ERROR_OBJECT_ALREADY_EXISTS	An item already exists with this key.

To retrieve the pointer from the object, call IMFDXGIBuffer::GetUnknown.

Requirement	Value
Minimum supported client	Windows 8 [desktop apps \| UWP apps]
Minimum supported server	Windows Server 2012 [desktop apps \| UWP apps]
Target Platform	Windows
Header	mfobjects.h (include Mfidl.h)