def initialize(path)
@glade = GladeXML.new(path) {|handler| method(handler)}
@treeview = @glade["treeview1"]
@model = Gtk::TreeStore.new(String)
column = Gtk::TreeViewColumn.new("Test", Gtk::CellRendererText.new, {:text => 0})
@treeview.append_column(column)
root_iter = @model.append(nil)
root_iter.set_value(0, "Root")
child1 = @model.append(root_iter)
child1.set_value(0, "Child1")
child2 = @model.append(root_iter)
child2.set_value(0, "Child2")
child3 = @model.append(child1)
child3.set_value(0, "Child3")
@treeview.set_model(@model)
@treeview.set_size_request(200, 200)
end