Re: blocking, non-modal dialog?

[Allin Cottrell <cottrell wfu edu>]

On Mon, 29 Aug 2005, Chris Vine wrote:

> On Sunday 28 August 2005 22:30, Allin Cottrell wrote:
> > I'm having trouble engineering the following: a dialog which blocks
> > (execution in the caller must not proceed till a choice has been
> > made in the dialog's callbacks), but is not modal (the user may want
> > to consult other aspects of the gui in the process of making a
> > choice).
> >
> > Or rather, while the above is easy to achieve with gtk_main() in the
> > dialog code itself and gtk_main_quit() in a callback to the
> > "destroy" signal of the dialog window, the problem is that such a
> > dialog stays open when my main app is closed.
> >
> > I thought I could fix that with
> > gtk_window_set_destroy_with_parent(), but this seems to disable the
> > calling of gtk_main_quit.  That is, when I add destroy_with_parent
> > the dialog disappears OK when you exit the app, but the app hangs:
> > the gui's gone but gtk_main is still running.
> >
> > I must be missing something fairly obvious: could anyone tell me
> > what it is?  Thanks.
>
> I think you need to re-specify you question.
>
> What do you mean by "when my main app is closed".

Sorry, I wasn't very clear.  There is only one gtk process in play. 
This is what I mean:

1 My app's main window is displayed
2 The user opens a blocking dialog
3 Without closing the dialog box, the user deletes the main
  window via the window manager ('X')
4 Deletion of the main window triggers gtk_main_quit(), but at
  this point gtk_main_level = 2.
5 The blocking dialog remains open

If I set up the dialog with the main window as parent, and
call gtk_window_set_destroy_with_parent() on the blocking dialog,
then at step 5 the blocking dialog disappears OK, but it 
seems that gtk_main_level remains at 1, in the background:
the application is not actually terminated.

My workaround at present is to record whether a blocking dialog is 
open: when the user attempts to delete the main window, I check
for the presence of such a dialog and if there is one, I raise it 
instead of deleting the main window.

Allin Cottrell