Check page 243 of "Mastering Perl/Tk", specifically the 'Window Properties' section.

Assigning a empty sub to the WM_DELETE_WINDOW callback turns the button off - like so:

$mw->protocol( WM_DELETE_WINDOW, sub{} );

You'll need to turn off strict subs, as it doesn't like the bareword WM_DELETE_WINDOW. Although I'm sure there is a way of getting around that - I just don't know it...

In reply to Re: tk question: strick app cann't close by clicking by BlueBlazerRegular
in thread tk question: strick app cann't close by clicking by benlaw

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