Re: log off/ application terminate

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#16032

From: Eudy Silva
Date: Wed, 04 Jun 2003 15:40

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Duane Hebert wrote:
 > I've added an on close query as below:
 >
 > void __fastcall TControlForm::FormCloseQuery(TObject *Sender,
 >       bool &CanClose)
 > {
 >   CanClose = false;
 >    if(CompWatchdog) {
 >         delete CompWatchdog;
 >         CompWatchdog = NULL;
 >    }
 >    CanClose = true;
 >
 > }
 >
 >
 > Now my watchdog is reset as expected.  A couple of questions though.
 > Is this the proper way to use this event?

Yes. There's no need to set CanClose to false if you'll
set it to true later on, anyway. Also note CanClose defaults
to true, so there's no need to set CanClose at all, in this
particular case.

 > Additionally, I have a cleanup function that deletes all of my
 > objects.
 > I currently call it in the dtor.  Should I move this as well?
 > I can't really debug for leaks when I do a logoff...

Yes. Since the FormQueryClose is always called (be it in a normal
form close  or a user logo off) the clean up should be done in
this event handler.
Just make sure you don't do anything that might upset the form
destructor (it will still be called in case it's a normal
form close).

Thanks Remy for pointing out a simpler solution.

Eudy

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