[Glade-users] Closing a dialog window

[chris-morrison rassalom-technology co uk (Chris Morrison)]

On Sat, 2005-01-29 at 20:52 +0000, Keith Sharp wrote:
> On Sat, 2005-01-29 at 12:34 +0000, Chris Morrison wrote:
> > Hi all,
> >
> > This is probably more of a GNOME programming question than a Glade one
> > but here goes.
> >
> > I am writing a small program in Glade that displays a dialog window on
> > the screen with a Close button. Clicking the close button closes the
> > dialog and ends the program.
> >
> > I have placed the following code in the signal handler for the Close
> > button's click event.
> >
> > void on_closebutton_clicked(GtkButton *button, gpointer window_ptr)
> > {
> >   GtkDialog *window = GTK_DIALOG(window_ptr);
> >   gtk_widget_destroy(GTK_WIDGET(window));
> > }
> >
> > However, when I click on the Close button nothing happens and the
> > following message is displayed in the terminal window.
> >
> > (my-program:5534): Gtk-CRITICAL **: file gtkwidget.c: line 1911
> > (gtk_widget_destroy): assertion `GTK_IS_WIDGET (widget)' failed
> >
> > I am a newbie to Linux programming as you can tell, I have just migrated
> > from Micro$oft Windoze.
> >
> > Any pointers (no pun intended) would be appreciated.
>
> Two things:
>
> 1) How are you connecting the callback, which you show above, to the
> object and the signal?  I assume you have a call to g_signal_connect
> somewhere in your code.  Can you show us some more of your code?

g_signal_connect ((gpointer) closebutton, "clicked", G_CALLBACK
(on_closebutton_clicked), NULL);

This was pasted from the interface.c file.

The signals are all automatically connected by Glade when you create the
UI. I have just modified the empty function that is created in the
callbacks.c file.

> 2) Consider using gtk_dialog_run () and then just check the return code,
> there is an example in the API docs:
>
> http://developer.gnome.org/doc/API/2.0/gtk/GtkDialog.html#gtk-dialog-run
>
> Keith.
>
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