Re: Programs that didn't need to be written - ScreenSaver5250

[Scott Klement <rpg400-l@xxxxxxxxxxxxxxxx>]

Frank,

INVITE, essentially, "unlocks the keyboard" so you can do an output-only 
operation to a screen, but still allow keyboard input (in the case of a 
screen saver, I'm assuming you'd use it so a key like enter or an F-key 
will stop the screen saver.)

While you could use it with ACQ to handle multiple displays, that's only 
one potential use.

-SK

On 8/15/22 5:39 PM, Frank Kolmann wrote:
> Quite confused.  Not sure how INVITE would work as a screen saver.
>
> I was never aware that OS400 disconnected inactive jobs.
>
> INVITE is used with ACQ op-code for multiple device coding.  I rarely 
> used MRT programs,
> INVITE is used with UDDS to get input from the device, also rarely used.
>
> From the manual
> -----
> INVITE (Invite) keyword for display files
> Use this file- or record-level keyword to invite the device for a 
> later read. To send an invite to a specific
> device, your program sends an output operation to the device with the 
> INVITE keyword in effect. If the
> record format used has output-capable fields, the data is sent to the 
> device before the device is invited.
> This keyword has no parameters.
> INVITE must be used if the display file can have multiple _acquired_ 
> devices and your program does read
> from invited devices operations.
> -----
>
> Frank
>
> On 15/08/2022 11:41 am, Chris Pando wrote:
> > I use this program to keep the system from thinking my job is 
> > inactive, and
> > disconnecting me.  A recursive implementation of quicksort, it uses the
> > INVITE keyword to update the screen every n seconds. It also uses a
> > Fisher-Yates shuffle, with the bindable procedure CEERAN0.
> >
> > http://www.brilligware.com/cp1329.html
> >
> > Chris Pando
> > chris@xxxxxxxxx
> > www.brilligware.com - Home to MineSweeper5250