Suppose a display file has been declared in a CL program. It accepts some user input and conducts some validations to it. If it fails the validation a message would be displayed on the bottom of the display file. Is it possible to achieve this in CL? I have tried SNDPGMMSG with MSGTYPE(*DIAG), but the message is displayed only after the program has been terminated, and not on the display file during the execution.
The message to be sent is retrieved from message file so using field to display message is not applicable.
Normally we use message subfile to achive what you required above.
It can be done in display file for both CL and RPG
For CL example, you could read here http://www.mcpressonline.com/cl/the-cl-corner-letting-the-user-know-what-s-right-and-wrong.html.
You could search for “cl program message subfile” for other examples