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