GNOME Bugzilla – Bug 617549
Warning messages when switching tab with scroll wheel
Last modified: 2010-05-03 19:01:08 UTC
When using the scroll wheel on mouse to switch tab in a notebook application, the following two warning messages are shown: (a.out:17397): Gtk-CRITICAL **: gtk_widget_is_ancestor: assertion `ancestor != NULL' failed (a.out:17397): Gtk-CRITICAL **: gtk_widget_is_ancestor: assertion `ancestor != NULL' failed You can still switch tab successfully, so the bug is not critical but annoying. The bug can be reproduced with, for example, the small program at http://library.gnome.org/devel/gtk-tutorial/2.20/x1450.html
Thanks for the bug report. This particular bug has already been reported into our bug tracking system, but please feel free to report any further bugs you find. *** This bug has been marked as a duplicate of bug 604391 ***