from gi.repository import Gtk

class MessageDialogWindow(Gtk.Window):

def __init__(self):

Gtk.Window.__init__(self, title="MessageDialog Example")

box = Gtk.Box(spacing=6)

self.add(box)

button1 = Gtk.Button("Information")

button1.connect("clicked", self.on_info_clicked)

box.add(button1)

button2 = Gtk.Button("Error")

button2.connect("clicked", self.on_error_clicked)

box.add(button2)

button3 = Gtk.Button("Warning")

button3.connect("clicked", self.on_warn_clicked)

box.add(button3)

button4 = Gtk.Button("Question")

button4.connect("clicked", self.on_question_clicked)

box.add(button4)

def on_info_clicked(self, widget):

dialog = Gtk.MessageDialog(self, 0, Gtk.MessageType.INFO,

Gtk.ButtonsType.OK, "This is an INFO MessageDialog")

dialog.format_secondary_text(

"And this is the secondary text that explains things.")

dialog.run()

print("INFO dialog closed")

dialog.destroy()

def on_error_clicked(self, widget):

dialog = Gtk.MessageDialog(self, 0, Gtk.MessageType.ERROR,

Gtk.ButtonsType.CANCEL, "This is an ERROR MessageDialog")

dialog.format_secondary_text(

"And this is the secondary text that explains things.")

dialog.run()

print("ERROR dialog closed")

dialog.destroy()

def on_warn_clicked(self, widget):

dialog = Gtk.MessageDialog(self, 0, Gtk.MessageType.WARNING,

Gtk.ButtonsType.OK_CANCEL, "This is an WARNING MessageDialog")

dialog.format_secondary_text(

"And this is the secondary text that explains things.")

response = dialog.run()

if response == Gtk.ResponseType.OK:

print("WARN dialog closed by clicking OK button")

elif response == Gtk.ResponseType.CANCEL:

print("WARN dialog closed by clicking CANCEL button")

dialog.destroy()

def on_question_clicked(self, widget):

dialog = Gtk.MessageDialog(self, 0, Gtk.MessageType.QUESTION,

Gtk.ButtonsType.YES_NO, "This is an QUESTION MessageDialog")

dialog.format_secondary_text(

"And this is the secondary text that explains things.")

response = dialog.run()

if response == Gtk.ResponseType.YES:

print("QUESTION dialog closed by clicking YES button")

elif response == Gtk.ResponseType.NO:

print("QUESTION dialog closed by clicking NO button")

dialog.destroy()

win = MessageDialogWindow()

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

win.show_all()

Gtk.main()