How to terminate a TkinterApp correctly?

[Michael Peuser]

I just notice a left over line from a test, that lambda is of no use at all!
May be you will have to use WM_SAVE_YOURSELF instead of WM_DELETE_WINDOWS if
you want to be sure to keep the widget absolutly intact. Between these two
messages some tidying-up could aleady have happened behind the scene....So
this is my fine example:

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from Tkinter import *

def killingAction(ev):
    print "Destroyed"

def kidding():
         print "not killing"
         l.config(text="just kidding")
         l.master.protocol("WM_DELETE_WINDOW",original)

 l=Label(text="Kill me!")
l.pack()
l.bind("<Destroy>",killingAction)

 original= l.master.protocol("WM_DELETE_WINDOW",None)
l.master.protocol("WM_DELETE_WINDOW",kidding)


mainloop()
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Kindly
Michael P