RE: writing to userspace

I recently published a handful of service programs that interface with a
user space.  You can check out my approach to user space programming by
going to http://mowyourlawn.com and click on the link in the lower right box
titled "RPG Dynamic Arrays".  I am looking to modify this approach to go off
of User Indexes also, but haven't gotten around to that yet.

Anyways, all the source is there so you can see exactly what is going on.

HTH,
Aaron Bartell 

-----Original Message-----
From: rpg400-l-bounces+albartell=gmail.com@xxxxxxxxxxxx
[mailto:rpg400-l-bounces+albartell=gmail.com@xxxxxxxxxxxx] On Behalf Of
Knezevic.Mihael
Sent: Thursday, June 22, 2006 3:46 AM
To: RPG programming on the AS400 / iSeries
Subject: writing to userspace

hello,

i got a simple question about writing to a userspace because it is not 100%
clear to me.

i got a userspace (which is set to autoextend) and in my rpg program i am
retrieving a pointer to that userspace. through pointer arithmetic i am
filling the userspace with some values.

D usPtr           S               *
D usData          DS                  based(usPtr) qualified
D   header                            likeds(wws_main_us)

D usDataPtr       S               *
D vkst            S              5  0 based(usDataPtr)

dow (not %eof);
  usDataPtr = usPtr + %len(usData.header) +
              (i * %size(vkst));
  vkst = someValue;
  i += 1;
  read file;
enddo;

is this the right way to fill a userspace (it seems to be the easiest) ?
and is the userspace auto extending when i'm not using the os400 api to
write to it?

thanx for any answers

mihael knezevic
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