in reply to TK close window int signal

What signal is it recieving when you click the window close button on the upper right hand side?

None. Tk doesn't use signals.

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Re^2: TK close window int signal
by Anonymous Monk on May 29, 2011 at 03:58 UTC
    To elaborate, MainLoop is responsible for processing GUI messages. Closing the last toplevel window, ends the MainLoop. 
    $ perl -MTk -e " tkinit->MainLoop; die qq[hi] "
hi at -e line 1.

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