Personal Communications Response
Personal Communications acknowledges the terminate command with this message:
WM_DDE_TERMINATEWhen the user closes a Personal Communications session, any global memory blocks that were allocated by Personal Communications will be freed by Windows. This can cause problems for the client if the client retains any of these global memory objects for long periods of time. If the client application needs to keep the information in a global memory item for a long time, it is suggested that the client make a copy of global memory item into a global memory item the client application owns.