Hi again, I was trying to figure out why the needles didn't show up in the Tk::Gauge examples, (and your code above). Anyways, it seems that Tk::Trace needs to be pre-loaded into Tk, before you load Tk. This is shown, but poorly described in the perldoc for Tk::Trace. Also see Simple Tk Gauge.

Anyways, change the top of your script to this, and see the needle appear( on linux anyways).

#!/usr/local/bin/perl -w
package Tk;
use Tk::Trace;

package main;
use Tk;
use Tk::Gauge;
use strict;
use warnings;
......
.......
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