Re: dialog close signal and hiding dialog...

[Matthew Weier OPhinney <matthew-lists weierophinney net>]

-- muppet <scott asofyet org> wrote
(on Tuesday, 12 August 2003, 09:00 PM -0400):
> On Tuesday, August 12, 2003, at 12:22  PM, Matthew Weier OPhinney wrote:
>
> > I've created an options dialog for an application, and I only want to
> > create it once per session. I've setup the GtkDialog to capture the
> > 'close' signal
>
> there is no 'close' signal.  i think what you meant to type was 
> 'delete-event'.

Aha! That's what I was looking for! I've tried 'destroy' and 'close',
and neither did what I was wanting!

> > as well as the response signal. I've determined that
> > closing the window sends a response of '-4',
>
> i apologize that the response signal doesn't use the enums, but as i've 
> mentioned before, it's out of my control because the signal is 
> marshaled with an int.  (but i'm still embarrassed about it, as it's 
> something of a wart on gtk2-perl.)  anyway....

Not a problem -- I was mentioning it so that I could be more specific in
the details of what I was trying to do. Tho' I wouldn't mind using the
enums... ;-)

> > and I've setup both my
> > close and my response callbacks to do a "$dialog->hide" on receiving
> > such a signal. This works fine. It's when I try and open the dialog
> > again that I get an error. I try to show it using "$dialog->show", but
> > the window appears with now widgets, and I get a segmentation fault 
> > when
> > I close that window.
> >
> > Am I capturing the signals correctly?
>
> nope.  the delete-event gets routed through response as a certain 
> response code, but the event continues to propagate, resulting in the 
> destruction of the window.  you simply need to bind to delete-event a 
> signal handler that returns TRUE, to stop the propagation.
>
> > Am I trying to re-display the
> > dialog correctly? Or do I need to post some code...? ;-)
>
> here's some code, fresh out of vim and a test-run.  if you try this, 
> you should be able to resize the dialog, close it, and see it reappear 
> at the same size.  if you don't see this, i want to know about it.  

Works perfectly -- certainly something to add to my toolbox! Wierd
trick; it'd be nice to see a dialog called with '$dialog->show;' have
this bound automatically.

-- 
Matthew Weier O'Phinney
http://weierophinney.net/matthew/