[Tkinter-discuss] How to catch when the root window closes?

[Snakey]

would think that the root window is exited by using the "X" windows close
button?  If this is the case, you can bind the window manager event
WM_DELETE_WINDOW to a handler.  Try this:

root = Tk()
...
... some other codes

# --------------------------
# to bind the window manager's CLOSE event to a fn
# --------------------------
root.protocol( "WM_DELETE_WINDOW", my_function )

# so when the user press the "x" button, my_function is executed.  Write
watever code you need in my_function(), and at the end of 
# the function, you can execute root.destroy to close the application.





inhahe wrote:
> 
> I tried doing root.bind("<Destroy>",onquit)
> but i don't get why onquit is called *18* times when I exit the app.
> what's the ideal way to execute something *once* when the app is exited?
> Thanks,
> inhahe
> 
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