void HandleRowChanged(object sender, ListRowEventArgs e)
{
var p = new Gtk.TreePath(new int[] { e.Row });
var it = IterFromNode(e.Row);
adapter.EmitRowChanged(p, it);
parent.QueueResize();
}
void HandleNodeChanged(object sender, TreeNodeEventArgs e)
{
Gtk.TreeIter it = IterFromNode(e.Node);
adapter.EmitRowChanged(GetPath(it), it);
}