#!/usr/bin/perl -w

use Tk;

$top = MainWindow->new();
$top->maxsize(600,300);

$NUMCOLS = 10;  # Number of columns to display

# Create a frame into which all the text boxes will go
    
$frm = $top->Frame()->pack();

# Make and pack the scrollbar
    
$scrollbar = $frm->Scrollbar()->pack(-side => 'left', -fill => 'y');

# Set up textboxes

for ($i = 0; $i < $NUMCOLS; $i++) {

    $block[$i] = $frm->Text(
                -width  => 20,
                -height => 30,
                -background => 'white',
                -yscrollcommand => ['set' => $scrollbar]
                );

    for ($j = 0; $j < 100; $j++) {
    $block[$i]->insert('end',"$j\n");
    }
}

## Configure the scrollbar to scroll each textbox

$scrollbar->configure(-command => sub { foreach $box (@block) {
    $box->yview(@_);
}});

## Pack the textboxes

foreach $box (@block) {
    $box->pack(-side => 'left');
}

MainLoop();
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