Re: SHARE(*yes) and trapping of keys

[rob@xxxxxxxxx]

Some further clarification on Scott's statement.

Running RPG on your PC with a 5250 emulation program doesn't count.

I think he meant either IBM VARPG or ASNA's product, which are a 
Client/Server model of RPG.

Right Scott?

Rob Berendt
-- 
"They that can give up essential liberty to obtain a little temporary 
safety deserve neither liberty nor safety." 
Benjamin Franklin 




Scott Klement <klemscot@klements.com>
Sent by: rpg400-l-bounces@midrange.com
01/29/2003 01:03 AM
Please respond to RPG programming on the AS400 / iSeries
 
        To:     RPG programming on the AS400 / iSeries 
<rpg400-l@midrange.com>
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        Subject:        Re: SHARE(*yes) and trapping of keys




On Wed, 29 Jan 2003, jang jewing wrote:
>
> I have the following doubts.

I think you mean "questions", as these are not doubts.

>
> 1.Under what circumstances should a display file be compiled with
> share(*yes).Some examples would be helpful.

I can't think of any reason to use share(*YES) on a display file.
I suppose if you had more than one program, one was writing to the
display, and another one is reading from that same display, you'd
want to use SHARE(*YES).  But, this doesn't seem like a good idea
to me.

>
> 2.How can we trap alt/ctrl keys in RPG???
>

This is a difficult question to answer.   Is the RPG program running on
a PC, where it has a keyboard attached directly to it?

In the usual scenario (at least for this list) an RPG program is running
on an iSeries/400 (previously called an AS/400).   The AS/400 has no
keyboard attached to it.   Instead, it communicates to a 5250 terminal.
The "alt" and "control" keys are not part of a standard 5250 keyboard...
and even if they were, individual keystrokes are not sent from the
terminal to the AS/400 -- instead, an entire screen full of data is
displayed to the user, and the data keyed into that screen is returned
only after it has all been typed in.

However, if you're writing an RPG program on a PC, then what you're asking
would make sense... in that circumstance,  you're dealing with a
character-at-a-time interface and a directly connected keyboard.

Of course, there are other possibilities... such as client/server
communications, etc, where you might or might not have the ability to talk
directly to the keyboard.

But in the "usual" circumstance, you can't.

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