Parameters
hWnd identifies the current window of the application.
dwConversation identifies the conversation handle returned from either EHNAPPC_Allocate or EHNAPPC_ExtendedAllocate.
lpRequestToSendRcvd points to a variable that is used to store whether the partner transaction program issued a REQUEST_TO_SEND verb. A value of TRUE indicates the partner trans action program issued a REQUEST_TO_SEND verb.