Returns the runtime status report of a DDE function.
Indeed, most of the DDE functions return
True if successful and
False if a problem occurs.
DDEError returns the error details. You can also use
ErrorInfo to get the error code.
Caution:
DDEError and
ErrorInfo do not return the same error codes if a DDE error occurs. Indeed,
DDEError returns the Windows error code while
ErrorInfo returns an error code specific to WINDEV or WEBDEV.
// Connection
MyConnection = DDEConnect("Excel", Subject)
// Error occurred?
IF MyConnection = 0 THEN
SWITCH DDEError()
CASE 1: Error("Initialization error")
CASE 6: Error("The recipient is unknown")
END
END
Syntax
<Result> = DDEError([<Connection identifier>])
<Result>: Integer
Code of last DDE error that occurred on the specified DDE connection. | |
| -1 | Syntax error (client = *, subject = *, etc.) |
| 1 | Initialization error |
| 2 | The program is already stopped |
| 3 | The program currently run is started while it is still registered toward WINDEV/WEBDEV (the program did not call DDEDisconnect during a previous execution) |
| 4 | Too many programs are registered toward WDDE.DLL (up to 50 programs) |
| 5 | Too many messages are found in memory (up to 400 messages) |
| 6 | Unknown recipient |
| 7 | No message to retrieve: the pile of messages is empty for the requested subject |
| 8 | Insufficient memory to start the server |
| 9 | The program called is unknown (invalid path) |
| 10 | The program called is already run |
| 11 | Error while starting the program |
| 12 | Error during a memory allocation |
| 13 | Error during the DDE initialization |
| 14 | Error while connecting to the application (server) |
| 15 | Error during the DDE transaction |
| 16 | Error while retrieving a DDE data |
<Connection identifier>: Optional integer
Connection identifier, returned by DDEConnect. If this parameter is not specified, DDEError is using the last connection handled.