On Fri, Apr 08, 2011 at 01:17:52AM -0700, Igor Korot wrote: > I need to change the markup text in the label conditionally in the loop. > However, I'm getting this on the second call of gtk_label_set_markup(): > > (mini2440gtk:19672): GLib-GObject-WARNING **: invalid cast from > `(null)' to `GObject' > > (mini2440gtk:19672): GLib-GObject-CRITICAL **: g_object_freeze_notify: > assertion `G_IS_OBJECT (object)' failed > > (mini2440gtk:19672): GLib-GObject-WARNING **: invalid cast from > `(null)' to `GObject' > > (mini2440gtk:19672): GLib-GObject-CRITICAL **: g_object_notify: > assertion `G_IS_OBJECT (object)' failed > > (mini2440gtk:19672): GLib-GObject-WARNING **: invalid cast from > `(null)' to `GtkWidget' > > (mini2440gtk:19672): Gtk-CRITICAL **: gtk_widget_queue_resize: > assertion `GTK_IS_WIDGET (widget)' failed > > (mini2440gtk:19672): GLib-GObject-WARNING **: invalid cast from > `(null)' to `GObject' > > (mini2440gtk:19672): GLib-GObject-CRITICAL **: g_object_thaw_notify: > assertion `G_IS_OBJECT (object)' failed > > I checked and the window and the text are both not NULL. > > Is it possible to do it this way? Or I just need to dereference something? gtk_label_set_markup() can be called an arbitrary number of times. You do not need to *dereference* anything. You may need to reference the label â if it's been removed from the container it was in. Otherwise the only conclusion that can be made from this is that you code is buggy. Run it with G_DEBUG=fatal-warnings to obtain a stack trace at the first warning and see what exactly gets the NULL pointer instead of an object. Yeti _______________________________________________ gtk-list mailing list gtk-list@xxxxxxxxx http://mail.gnome.org/mailman/listinfo/gtk-list
