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Re: Help for 4gl development

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Date:

Write a SIGALARM handler, a function to set the alarm for 5 minutes designating
the new handler function, and a function to reset the SIGALARM handler to
SIG_IGNORE all in 'C' but 4GL callable. Either link them into your 4GL program
if you use C4gl or into the pcode runner if you use R4GL or D4GL. On entry to
the 'screen' function's INPUT statement call the alarm setup function, in any
after field logic in the INPUT FORM call the setup function again to reset the
timer. On exit from the INPUT block disable the SIGALARM with the SIG_IGNORE
function. If the alarm timer expires between fields due to idleness the
SIGALARM handler will execute and it should set the 4GL interrupt flag and
return. In the INPUT function trap the interrupt in an ON clause and exit the
function gracefully, perhaps logging the event or popping up a message box.

Art S. Kagel

----- Original Message -----
From: Subbarao Su.... <ssvsunkavalli@yahoo.com>
At: 2/ 3 9:32

> Informix 4GL tool is using for Development. One of the program accepts various
> input fields in the program, finally on the confirmation, it validates and
> update the data and back to previous menu.
>
> There is a situation to exit from the Input Screen when the system is idle for
5
> minutes,
> wherever the cursor is in place either at field acceptance or at confirmation
> pop window.
>
> What is the best way to develop program for this ?
> Any help can be highly appreciated.
> thanks
>
> subbarao

Messages In This Thread

• Re: Help for 4gl development
  ART KAGEL, BLOOMBERG/ 65E 55TH -- Tuesday, 15 April 2003, at 3:55 p.m.
  • Re: Re: Help for 4gl development
    RAVINDRA YARLAGADDA -- Tuesday, 15 April 2003, at 3:55 p.m.

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