<ThreadSafetyStatement>Gtk# is thread aware, but not thread safe; See the <linklocation="node:gtk-sharp/programming/threads">Gtk# Thread Programming</link> for details.</ThreadSafetyStatement>
<summary>Delegate function to specify the shape of comparison functions for tree iterators.</summary>
<remarks>Functions with this call syntax are usually used for comparison between two tree iterators as part of a sort. (FIXME: provide better examples.)</remarks>