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IMFByteStreamHandler::CancelObjectCreation method

Cancels the current request to create a media source.

Syntax

C++


HRESULT CancelObjectCreation(
  [in] IUnknown *pIUnknownCancelCookie
);

Parameters

pIUnknownCancelCookie [in]: Pointer to the IUnknown interface that was returned in the ppIUnknownCancelCookie parameter of the IMFByteStreamHandler::BeginCreateObject method.

Return value

The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.

Return code	Description
S_OK	The method succeeded.

Remarks

You can use this method to cancel a previous call to BeginCreateObject. Because that method is asynchronous, however, it might be completed before the operation can be canceled. Therefore, your callback might still be invoked after you call this method.

Requirements

Minimum supported client	Windows Vista [desktop apps \| Windows Store apps]
Minimum supported server	Windows Server 2008 [desktop apps \| Windows Store apps]
Header	Mfidl.h
Library	Mfuuid.lib