comment on

Under Tk, Ctrl+C no longer sends the INT signal. You can still bind <Control-c> to something, though.

Also, Tk already incorporates a loop: the MainLoop. Looping over short lists is probably OK, but introducing loops that might take a long time to iterate or have a high number of iterations is wrong, you should use Tk->repeat or Tk->after instead, see Tk::after.

#!/usr/bin/perl
use warnings;
use strict;

use Tk;

sub periodically {
    warn "Testing the file existence...\n";
}

my $mw = MainWindow->new(-title => 'Test');

my $repeat = $mw->repeat(1000, \&periodically);

$mw->bind('<Control-c>', sub { $mw->afterCancel($repeat) });

MainLoop();
[download]

Update: Added the example.

map{substr$_->[0],$_->[1]||0,1}[\*||{},3],[[]],[ref qr-1,-,-1],[{}],[sub{}^*ARGV,3]

In reply to Re: Interrupting a loop by choroba
in thread Interrupting a loop by merrymonk

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