var iter = new Gtk.TreeIter();
iter.constructor = Gtk.TreeIter;
this.el.get_iter (iter, tpath) ;
var iter = new Gtk.TreeIter();
iter.constructor = Gtk.TreeIter;
this.el.get_iter (iter, tpath) ;
//print(XObject.type(iter));
var gval = new GObject.Value( [this.el.get_column_type(col), null ]);
//print(XObject.type(iter));
var gval = new GObject.Value( [this.el.get_column_type(col), null ]);