> Glade.XML gxml = new Glade.XML ("file.glade","main_widget_name", null); That won't work, because they use exactly this constructor already to open glade xml from files. But the syntax should be that short: I vote for: Glade.XML gxml = new Glade.XML ("file.glade","main_widget_name", null, true); true says from resource :-) Johannes