3.1.4.6 Cancellation Sequencing

A client application can use CONTEXT_HANDLE_OPERATION_CONTROL to cancel a method by passing CONTEXT_HANDLE_OPERATION_CONTROL to the EvtRpcCancel (section 3.1.4.34) method. The EvtRpcClose (section 3.1.4.33) method is then used when the application no longer needs the handle.