Gtk testing stuff

gistfile1.py

from gi.repository import Gtk

win = None

class MyFirstWindow(Gtk.Window):
    def __init__(self):
        Gtk.Window.__init__(self, title="First Class")

        self.button1 = Gtk.Button(label="Click me. Quick!")
        self.button1.connect("clicked", self.on_button_clicked)
        self.add(self.button1)

    def on_button_clicked(self, widget):
        win = MySecondWindow()
        win.show_all()

class MySecondWindow(Gtk.Window):
    def __init__(self):
        Gtk.Window.__init__(self, title="Second class")

        self.button2 = Gtk.Button(label="Don't click me!")
        self.add(self.button2)



win = MyFirstWindow()
win.connect("delete-event", Gtk.main_quit)
win.show_all()
Gtk.main()