I'm unable to replicate your problem. Here's the code I'm using:

#!/usr/bin/perl -w
use strict;
use Tk;

my $mw = MainWindow->new(-title=>"Foo!");
my $f  = $mw->Frame(-width=>400, -height=>400)->pack;
print "Tk is $Tk::VERSION; Window id is ",$f->winfo('id'),"\n";
my $child = $mw->Toplevel(-title=>"Bar!",-use=>$f->winfo('id'));
$child->Label(-text=>"Bar!")->pack;
MainLoop;

[download]

..which tells me that Tk is 800.023; Window id is 0x2e00004 and pops up a window. Either your version of Tk is out of date or something, or there's something in the surrounding code which is making Tk go awry.

perl -pe '"I lo*`+$^X$\"$]!$/"=~m%(.*)%s;$_=$1;y^`+*^e v^#$&V"+@( NO CARRIER'

In reply to Re: '0x1b03b2' Isn't Numeric by Chmrr
in thread '0x1b03b2' Isn't Numeric by Jeffers

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