This message notifies an application of the receipt and processing of a WM_DDE_EXECUTE, WM_DDE_DATA, WM_DDE_ADVISE, WM_DDE_UNADVISE or WM_DDE_POKE message, and in some cases, of a WM_DDE_REQUEST message.

This message is always posted.

param1
     HWND        hwnd        /*  Window handle of the sender. */

param2
     PDDESTRUCT  pDdeStruct  /*  DDE structure. */