[10626] in The GTK GIMP ToolKit mailing list archive
[gtk-list] Re: object unref error
daemon@ATHENA.MIT.EDU (D. Emilio Grimaldo Tunon)
Thu Dec 3 04:01:55 1998
Date: Thu, 03 Dec 1998 09:57:05 +0100
From: "D. Emilio Grimaldo Tunon" <emilio_tunon@nl.compuware.com>
To: gtk-list@redhat.com
Resent-From: gtk-list@redhat.com
Reply-To: gtk-list@redhat.com
David Given wrote:
> the button, and your callback gets called. When you call gtk_widget_destroy(),
> the "destroy" signal fires. AFAIK gtk_widget_destroyed attempts to destroy the
> current widget. So you end up destroying it twice.
>
> Try instead of the second gtk_signal_connect() this:
>
> gtk_signal_connect_object(
> GTK_OBJECT(okBtn), // Object signal is attached to
> "clicked", // Signal name
> GTK_SIGNAL_FUNC(gtk_widget_destroyed), // Callback
> GTK_OBJECT(dlg), // Object actually passed to callback
> NULL); // User data
>
> Of course, I could be entirely wrong. Feel free to correct me.
Thanks, but I have to tell ya' :-) gtk_sig*_object() only takes
4 parameters so the last NULL shouldn't be there. I tried this
in various combinations (allowing for typos) and didn't get it
to work, once I removed the NULL and ran it:
1) gtk_widget_destroy + dlg
click OK button results in **Gdk-Message ERROR: sigseg caught
2) gtk_widget_destroyed + dlg
click OK button, usually the dialog does *not* get destroyed.
A Gtk-Warning "Invalid unclassed pointer in cast to GtkObject"
followed in some ocassions by a sigsev.
3) popupCB + dlg (popupCB uses gtk_widget_destroy()
press OK causes Gtk-CRITICAL gtkobject.c line 1164 gtk_object_unref
assertion object != NULL failed. The dialog *does* disappear and
the application runs without a sudden stroke.
So, any more suggestions anyone?
--
D. Emilio Grimaldo Tunon Compuware Europe B.V. (Uniface Lab)
Software Engineer Amsterdam, The Netherlands
emilio_tunon@nl.compuware.com Tel. +31 (0)20 3126 516
*** The opinions expressed hereby are mine and not my employer's ***
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