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from tkinter import *
# This file shows how to trap the killing of a window
# when the user uses window manager menus (typ. upper left hand corner
# menu in the decoration border).
### ******* this isn't really called -- read the comments
def my_delete_callback():
print("whoops -- tried to delete me!")
class Test(Frame):
def deathHandler(self, event):
print(self, "is now getting nuked. performing some save here....")
def createWidgets(self):
# a hello button
self.hi_there = Button(self, text='Hello')
self.hi_there.pack(side=LEFT)
def __init__(self, master=None):
Frame.__init__(self, master)
Pack.config(self)
self.createWidgets()
###
### PREVENT WM kills from happening
###
# the docs would have you do this:
# self.master.protocol("WM_DELETE_WINDOW", my_delete_callback)
# unfortunately, some window managers will not send this request to a window.
# the "protocol" function seems incapable of trapping these "aggressive" window kills.
# this line of code catches everything, tho. The window is deleted, but you have a chance
# of cleaning up first.
self.bind_all("<Destroy>", self.deathHandler)
test = Test()
test.mainloop()
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