Cancels the asynchronous operation.
This method returns an HRESULT value.
This method guarantees that the callback object will not be invoked. No other form of status is provided, such as a way to check to see if the operation has been canceled. Also, note that this method does not wait for the cancellation to be processed - it returns immediately.
Minimum supported client
Minimum supported server
|Windows Server 2012 R2|