Tracking Gtk2 error messages

[Ian Chapman <packages amiga-hardware com>]

Hi All,

How do I determine which widget is the cause of errors such as this?

Gtk-CRITICAL **: IA__gtk_widget_grab_default: assertion 
'gtk_widget_get_can_default (widget)' failed

I'm using perl-gtk2 and gtkbuilder. It gives a line number but that's 
simply where I'm adding the xml file...

i.e. $builder->add_from_file ($filename))

which isn't particularly useful. Thanks.

--
Ian Chapman.