from gi.repository import Gtk, Gio
class HelloWorldApp(Gtk.Application):
def __init__(self):
Gtk.Application.__init__(self, application_id="apps.test.helloworld",
flags=Gio.ApplicationFlags.FLAGS_NONE)
self.connect("activate", self.on_activate)
def on_activate(self, data=None):
window = Gtk.Window(type=Gtk.WindowType.TOPLEVEL)
window.set_title("Gtk3 Python Example")
window.set_border_width(24)
label = Gtk.Label("Hello World!")
window.add(label)
window.show_all()
self.add_window(window)
if __name__ == "__main__":
app = HelloWorldApp()
app.run(None)