This CheckButton toggles the title.
from gi.repository import Gtk
import sys
class MyWindow(Gtk.ApplicationWindow):
# a window
def __init__(self, app):
Gtk.Window.__init__(self, title="CheckButton Example", application=app)
self.set_default_size(300, 100)
self.set_border_width(10)
# a new checkbutton
button = Gtk.CheckButton()
# with a label
button.set_label("Show Title")
# connect the signal "toggled" emitted by the checkbutton
# with the callback function toggled_cb
button.connect("toggled", self.toggled_cb)
# by default, the checkbutton is active
button.set_active(True)
# add the checkbutton to the window
self.add(button)
# callback function
def toggled_cb(self, button):
# if the togglebutton is active, set the title of the window
# as "Checkbutton Example"
if button.get_active():
self.set_title("CheckButton Example")
# else, set it as "" (empty string)
else:
self.set_title("")
class MyApplication(Gtk.Application):
def __init__(self):
Gtk.Application.__init__(self)
def do_activate(self):
win = MyWindow(self)
win.show_all()
def do_startup(self):
Gtk.Application.do_startup(self)
app = MyApplication()
exit_status = app.run(sys.argv)
sys.exit(exit_status)
In line 17 the "toggled"
signal is connected to the callback function toggled_cb()
using widget.connect(signal, callback function)
. See for a more detailed explanation.
In this sample we used the following:
GtkApplication
GtkApplicationWindow
GtkToggleButton
GtkCheckButton