Gtk = imports.gi.Gtk; Gdk = imports.gi.Gdk; atoms = { "STRING" : Gdk.atom_intern("STRING") }; targetList = new Gtk.TargetList(); targetList.add( atoms["STRING"], 0, 0); Gtk.rc_parse_string( "style \"gtkcombobox-style\" {\n" + " GtkComboBox::appears-as-list = 1\n" + "}\n"+ "class \"GtkComboBox\" style \"gtkcombobox-style\"\n"); //imports.Window.Window.el.show_all();