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Thanks Simon

That worked perfectly!!!

-----Original Message-----
From: cobol400-l-bounces@xxxxxxxxxxxx
[mailto:cobol400-l-bounces@xxxxxxxxxxxx] On Behalf Of
cobol400-l@xxxxxxxxxxxx
Sent: Friday, April 01, 2005 8:23 PM
To: COBOL Programming on the iSeries/AS400
Subject: Re: [COBOL400-L] "windows" using separate display files


On 02/04/2005, at 6:19 AM, cobol400-l@xxxxxxxxxxxx wrote:

> Is it possible to have a separate display file "window" overtop of 
> another.
> I've built a separate PGM / DSPF (window) to be called from various
> applications.  I would like it to "overlay" the existing screen without
> clearing the entire screen.
>
> Can someone point me in the right direction

Add this piece of magic to your display file DDS:

     A          R DUMMY
     A                                      ASSUME
     A                                  1  2'Nosferatu'

Your application does not read or write this record format. Its mere 
presence changes the behaviour of the display file and tells OS/400 to 
assume (more properly presume but I digress) that the record is already 
on the display when the file is opened thus  has the effect of not 
clearing the screen.

Note that the screen can still be cleared when a record format is 
written. To stop that you must also specify OVERLAY on the record 
format you are writing. If you are using the WINDOW keyword then it 
effectively behaves as if OVERLAY was specified.

ASSUME is normally used with KEEP (in another display file) but it has 
the pleasing side-effect of making windows display smoothly.

Regards,
Simon Coulter.
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