Use this field-level keyword to indicate that the text for a constant field is contained in a message description.
If the message description does not exist at DDS compile time, the file is not created. If you change the message description, you must create the file again.
MSGCON(length message-ID [library-name/]message-file-name)
The length parameter specifies the maximum length of the message description. The length can be from 1 to 132 bytes. If the message description is less than the length specified, the remaining bytes are padded with blanks (hexadecimal 40). If the message description is longer than the length specified, the message description is truncated to the specified length and a warning message appears.
The message-ID parameter specifies the message description that contains the text to use as the value of the constant field.
The message-file-name parameter identifies the message file that contains the message description. The library-name parameter is optional.
You must explicitly specify the
MSGCON keyword for the field. You can use the MSGCON keyword to initialize
a named field, only if you use POSITION (Position) keyword in
the record and use the special name *NONE.
The DFT and MSGCON keywords are functionally equivalent. If you specify the DFT and MSGCON keywords for the same field, the MSGCON keyword is ignored and the file is not created.
You cannot specify the DATE, DFT, EDTCDE, EDTWRD, and TIME keywords with the MSGCON keyword.
Option indicators are not valid for this keyword. However, they can be used to condition the field with which this keyword is specified.
Example
The following example shows how to specify the MSGCON keyword.
|...+....1....+....2....+....3....+....4....+....5....+....6....+....7....+....8
00010A R RECORD1
00020A 2 1MSGCON(10 MSG0001 MESSAGES/MSGF)
A
MSG0001 in message file MSGF in library MESSAGES contains the message text.