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RE: Create Graphical interface



fixed


X-Windows works over a network, but it is not scalable to hundreds of users because of technical reasons (it's architecture is not scalable). Also, unix is not like the as/400, and having one program (job/process) running for each interactive user is not a good idea in a unix environment. For unix type servers a client/server approach is best for scalability. And X-Windows is difficult to program for because the underlying base libraries are quite old (25 years).

So IMHO X-Windows is only useful on the as/400 (PASE) if you have to run an existing unix utility or program which happens to use X-Windows.


Subject: RE: Create Graphical interface
Date: Tue, 5 Feb 2008 11:15:33 -0500
From: LuisC@xxxxxxxxxxxxxxxx
To: java400-l@xxxxxxxxxxxx

Yeah, that sounds exciting, but I haven't tried that yet. I have used the Cygwin's X11 client (server) on my PC. That would mean a fourth alternative to iSeries user interfaces (the other three are green screens, web, and thick client).

It would be pretty exciting to be able to have a X11 session, because it would have the advantages of a thick client (advanced GUI and total control of the session), without the disadvantages.

I wonder why nobody else has ever looked into this. Perhaps because it doesn't work?

-----Original Message-----
From: java400-l-bounces@xxxxxxxxxxxx [mailto:java400-l-bounces@xxxxxxxxxxxx] On Behalf Of Thorbjørn Ravn Andersen
Sent: Monday, February 04, 2008 2:01 PM
To: Java Programming on and around the iSeries / AS400
Subject: Re: Create Graphical interface

Luis Colorado skrev den 04-02-2008 17:09:
Luis,

Unless you have to use a web interface, you have to develop a Java GUI application (using Swing or something like that) that runs on a PC, and connects to the iSeries.

There is a third possibility if I have understood the documentation
correctly, namely running an X11 server on the PC and connecting it to
the iSeries where the java program runs.

This is the same way that it is normally done under Unix, but as I
wrote, I have not tested it yet :)

--
THorbjørn
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