from gi.repository import Gtk

class CheckButtonWindow(Gtk.Window):

def __init__(self):

Gtk.Window.__init__(self, title="CheckButton Demo")

self.set_border_width(10)

hbox = Gtk.Box(spacing=6)

self.add(hbox)

button = Gtk.CheckButton("Button 1")

button.connect("toggled", self.on_button_toggled, "1")

hbox.pack_start(button, False, False, 0)

button = Gtk.CheckButton("B_utton 2", use_underline=True)

button.set_active(True)

button.connect("toggled", self.on_button_toggled, "2")

hbox.pack_start(button, False, False, 0)

def on_button_toggled(self, button, name):

if button.get_active():

state = "on"

else:

state = "off"

print("Button", name, "was turned", state)

win = CheckButtonWindow()

win.connect("delete-event", Gtk.main_quit)

win.show_all()

Gtk.main()