DDEML termination

When the client application wants to terminate the DDE conversation, it simply uses the DdeUninitialize DDEML function.

This informs Content Manager OnDemand that its DDE client has ended the conversation, but it does not cause Content Manager OnDemand to terminate. If the client wants Content Manager OnDemand to terminate, it should tell Content Manager OnDemand to EXIT.

The client must also be prepared to have the DDE conversation ended by Content Manager OnDemand. If Content Manager OnDemand is terminated, either independently or as a result of a DDE EXIT, the client receives a XTYP_DISCONNECT transaction from the DDEML.