Both those methods will do what I require which is great, however as soon as I try to share the reference the value on the traceVariable does not update, and on the Watch_variable the compiler complains 'attempt to free non-existent shared string'.

my $v = 0;
share ($v);
$mw->traceVariable(\$v, 'w' => [\&update_meter]);

my $thr = threads->new(\&sub1);

sub sub1{
    while (1){
         $v+= 1;
         sleep(1);
         print $v.":";
    }
}

[download]

thanks skywalker

In reply to Re^2: Tk Bind scalar by skywalker
in thread Tk Bind scalar by skywalker

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