This may not solve the problem exactly. But here's an example of using one Tk::Text widget to contain other Tk widgets, even other Text widgets.

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

my $MW = MainWindow->new;

my $TX = $MW->Scrolled( 'Text', -wrap => 'none' )->pack( -expand => 'y
+', -fill => 'both' );

my $t1 = $TX->Scrolled( "Text", width => 20 );
my $t2 = $TX->Scrolled( "Text", width => 20 );
my $t3 = $TX->Scrolled( "Text", width => 20 );
my $t4 = $TX->Scrolled( "Text", width => 20 );
my $t5 = $TX->Scrolled( "Text", width => 20 );


$TX->window('create', 'end', -window => $t1);
$TX->window('create', 'end', -window => $t2);
$TX->window('create', 'end', -window => $t3);
$TX->window('create', 'end', -window => $t4);
$TX->window('create', 'end', -window => $t5);

MainLoop;
[download]

It is left as an exercise for the reader to get all that to size in an eye-pleasing way.

PS in 'perldoc Tk::Scrollbar' there is mention of an '-orient' attribute, but attempts to use it (on my machine) fail. Very disappointing.

I also suggest looking at a scrolling Tk::Canvas widget as the container for multiple widgets, but don't have a facile example since Canvas is a little more complex. The 'widget' demo offers some hints, but nothing to latch onto.