I have been writing all sorts of lib calls to GTK and other libs in Bacon and know that that is not so easy. GTK takes certain data from widgets, so thunor whould have to bend over backwards to satisfy that request. He may do it, who knows, but it is not within the GTK automatic processing scheme, as I understand. Please look up the GTK widget documentation. Thunor should only give us access to the GTK stuff, and not to stuff he should have to code by hand that are not part of that widget.