Dear Monks,

I'm playing around a little bit again with Tk, and got the following problem:

If anybody just presses at the X at the upper right corner of the window or Alt+F4 (i mostly work under Win2k), the Window closes and the program finishes. 

#!perl -w
use strict;
use Tk;

my $mw = MainWindow->new();
$mw->OnDestroy( \&ExitApplication );
MainLoop;

sub ExitApplication {
    print ("Exiting\n");
    # do some cleanup
}

[download]
With something like the code above, I could at least do some cleanup before quitting.

What I'm looking for: if somebody presses the X at the top right corner of the window or Alt-F4, I want a MsgBox to pop up and ask "Do you really want to quit (Yes/No)", and if the user presses the Button for "No", the program should continue running. With OnDestroy, I only know a way to quit, but not to go on.

Best regards and thanx in advance,
perl -le "s==*F=e=>y~\*martinF~stronat~=>s~[^\w]~~g=>chop,print"

In reply to Tk - intercepting alt-f4 and the like by strat

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