Re: delete-event of GtkWidget

[Enrico TrÃger <enrico troeger uvena de>]

On Sat, 20 Jan 2007 05:34:27 +0000, tomas tuxteam de wrote:

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> On Fri, Jan 19, 2007 at 06:52:03PM +0100, Enrico TrÃger wrote:
> > Hi all,
> >
> > when I write big dialogs, I create it only once, keep the pointer to
> > the dialog and show it everytime I need it. In the response
> > callback I just use gtk_widget_hide to let the dialog disappear.
> > This works as expected and all is fine.
> >
> > On my Debian Etch(same for Sarge) I don't need to handle the
> > delete-event signal of the dialog. If it is triggered the dialog
> > just disappears and until now I thought it is just hidden. But
> > according to the API documenation the dialog should be actually
> > destroyed [...]
>
> I didn't understand exactly. Do you mean that you *don't* handle the
> delete event and still keep a pointer to the widget? And then the
> widget is hidden for you and you can re-show it later?
I connected to the delete-event and registered gtk_widget_hide as
callback. Re-showing(gtk_widget_show) worked in Debian and crashed in
PuppyLinux. Now, I register gtk_widget_hide_on_delete as callback and
then the widget won't be destroyed and all is fine.

> If you don't handle the delete event, the widget gets marked for
> destroy. Later it gets the destroy event (at this point the widget is
> no longer quite functional: think of it as a last cleanup thing).
> Then it goes away. Nobody guarantees you that all those things happen
> immediately.
Yes, this is what one should expect and it is also written in the docs.
But at least in Debian the widget is still usable after the
delete-event.


Regards,
Enrico

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