Python定义点击右上角关闭按钮事件

Python定义点击右上角关闭按钮事件(Python defines the event of clicking the close button in the upper right corner) 

文章来自：https://www.cnblogs.com/iAmSoScArEd/p/11200029.html 爬虫、转载请注明出处。

import tkinter
import tkinter.messagebox

def callbackClose():
    tkinter.messagebox.showwarning(title='警告', message='点击了关闭按钮')
    sys.exit(0)

root = tkinter.Tk()
root.title("点击关闭按钮事件")
root.protocol("WM_DELETE_WINDOW", callbackClose)
root.mainloop()  # 进入消息循环