Gtk2-Ex-TreeModelFilter-DragDest is Copyright 2008, 2009, 2010 Kevin Ryde

Gtk2-Ex-TreeModelFilter-DragDest is licensed under the GNU Public
License GPL version 3 (or at your option any later version).  The
complete text of GPL version 3 is in the file

   /usr/share/common-licenses/GPL-3

Program home page:

   http://user42.tuxfamily.org/gtk2-ex-treemodelfilter-dragdest/index.html