Re: Create Graphical interface

James Perkins wrote:

So, here is my question. How are you validating screen entries and getting
data to the screen? Do you have to write your own program to control this? I
would like to be able to throw a GUI over an already existing RPG program.

I would say that your best option would be to externalize the validation routines, for the green screen programs, to a service program and have your java program call the same procedures to validate the data.

I'm working on a project where we have to do a lot of that ... and (where we can) the green screen & java call the same routine.

I also have a java server that knows how to call the routines so the client code (WDSC in this case) doesn't have to directly access the host routines (it communicates with the java server via RMI).

When the server program needs to transfer bulk data to the host for validation, we use a data queue to feed the data to the procedure (along with a unique identifier for the keyed data queue). Bulk data is fed back to the java code through the same data queue with a different key).

david