DDE Error Return Codes

The return value of $DDEFunction is one of the following. A negative result indicates failure.

Value	Description
0	DDE service completed successfully.
-1001	Bad DDE service indicator type; p2 is not of type longint or int.
-1002	Unknown DDE service indicator value; p2 not 1, 2, 3, 4, or 5.
-1003	Attempt to CONNECT failed.
-1004	POKE data rejected by application.
-1005	PEEK returned no value; Returned as the string “-1005” from PEEK.
-1006	Time-out on service request, Returned as the string “-1005” from PEEK.
-1007	EXECUTE failed; application did not execute command.