import gtk

class Window:
    def __init__(self, title):
        self.window = gtk.Window(gtk.WINDOW_TOPLEVEL)
        self.window.set_title(title)
        self.window.connect("destroy", self.destroy_event)
        self.window.add(gtk.Label('Hello World'))
        self.window.show_all()

    def main(self):
        gtk.main()

    def destroy_event(self, widget, data=None):
        gtk.main_quit()