使用Ctrl C停止Python Gtk.Application

2023年1月25日 195次阅读

我正在创建一个应用程序.以前,我使用Gtk.Main()来启动我的应用程序,并创建了一些钩子来使用Ctrl C从命令行停止应用程序.现在,我已将应用程序迁移到更“标准”的Gtk.Application,但是可以不让它停止使用Ctrl C.

这是一个非常简单的Gtk.Application,当从命令行运行时,无法使用Ctrl C停止它：

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)

最佳答案

import signal
from gi.repository import GLib

...

GLib.unix_signal_add(GLib.PRIORITY_DEFAULT, signal.SIGINT, app.quit)
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