La ventana de GtkApplication más sencilla que puede soportar .
from gi.repository import Gtk
import sys
# a Gtk ApplicationWindow
class MyWindow(Gtk.ApplicationWindow):
# constructor: the title is "Welcome to GNOME" and the window belongs
# to the application app
def __init__(self, app):
Gtk.Window.__init__(self, title="Welcome to GNOME", application=app)
class MyApplication(Gtk.Application):
# constructor of the Gtk Application
def __init__(self):
Gtk.Application.__init__(self)
# create and activate a MyWindow, with self (the MyApplication) as
# application the window belongs to.
# Note that the function in C activate() becomes do_activate() in Python
def do_activate(self):
win = MyWindow(self)
# show the window and all its content
# this line could go in the constructor of MyWindow as well
win.show_all()
# start up the application
# Note that the function in C startup() becomes do_startup() in Python
def do_startup(self):
Gtk.Application.do_startup(self)
# create and run the application, exit with the value returned by
# running the program
app = MyApplication()
exit_status = app.run(sys.argv)
sys.exit(exit_status)
set_default_size(200, 100) establece el tamaño predeterminado de la ventana a una anchura de 200 y una altura de 100; si en lugar de un número positivo le pasa -1 tendrá el tamaño predeterminado.
set_position(Gtk.WindowPosition.CENTER) centra la ventana. Otras opciones son Gtk.WindowPosition.NONE, Gtk.WindowPosition.MOUSE, Gtk.WindowPosition.CENTER_ALWAYS, Gtk.WindowPosition.CENTER_ON_PARENT.
En este ejemplo se usa lo siguiente:
GtkApplication
GtkApplicationWindow