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List:       kde-devel
Subject:    Re: Memory question
From:       Leon Widdershoven <l.widdershoven () fz-juelich ! de>
Date:       1999-08-02 7:43:14
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From the Qt documentation (qdialog.html):
main()
{ (Open 1)
<snip>
	Modal m;
	if ( m.exec() ) { (Open 2)
	// ok was pressed, then fetch the interesting dialog data
	} (Close 2)
<snip>
} (Close 1)

In this example, Modal m; is not created using new, and will thus
be deleted when it runs out of context. Since it is opened after
(Open 1) it will be deleted automatically at "} (close 1)".

If you want it to be deleted after (Close 2) the you should write the 
following:

Modal *m = new Modal;
if ( m->exec() ) {
	// Use m;
}
delete m;

Regards,
Leon

Herwin Jan Steehouwer wrote:
> 
> On Mon, 2 Aug 1999, Uwe Thiem wrote:
> 
> > On Sun, 1 Aug 1999, Herwin Jan Steehouwer wrote:
> >
> > > I have a little memory question, when i make Dialogs or TabDialog etc,
> > > they are closed with accept(), but that is not removing the dialog.
> > >
> > > How can i be shure the dialog is removed from memory, because the memory
> > > is increasing every time i open a window !?
> >
> > There is someplace in your program where you create the dialog with "new"
> > and then call yourDialog->exec(). When that call returns you delete
> > the dialog with ... well ... "delete". ;-)
> 
> Yes, but what about Modal dialogs ?
> like QDialog(this, name, TRUE);  ?
> 
> they can't be run with exec() ! how can i delte those ?
> 
> tanx !
> 
> HJ
> >
> > Uwe
> >
> > -------------------------------------------------------------------------
> > Uwe Thiem                                        Tel: +264 - 061 - 244511
> > P.O.Box 30955                                    Fax: +264 - 061 - 244511
> > Windhoek                                         Email:   uwe@uwix.alt.na
> > Republic of Namibia                                           uwe@kde.org
> >                                                        http://www.kde.org
> >                   **********************************
> >          You can still escape from the GATES of hell: Use KDE!
> > -------------------------------------------------------------------------
> >
> >
> >
> >
> 
> Herwin Jan Steehouwer
>   herwinjs@palet.nl                 http://www.caiw.nl/~herwinjs
>   steehouwer@kde.org              KDE developer http://www.kde.org

-- 
In a world without walls and fences,  l.widdershoven@fz-juelich.de
who needs Windows and Gates?          Institute of Plasma physics (IPP)
                                      Forschungszentrum Juelich GmbH

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