Make a Scrolled Pane. Into the Scrolled Pane, pack a Frame for each row. To each Frame, add your Text widgets, packing left to right. Here is the idea with a bunch of Scrolled Canvases. If you also need to control focus, it is shown too. Of course, for 100 rows, you will need to automate the loop, I just hardwired in 2 Frames. UPDATE: added -expand=>1,-fill=>'both' options to make resizing look nice.

#!/usr/bin/perl
use strict;
use Tk;
use Tk::Pane;

my $mw = MainWindow->new;

$mw->geometry('400x250');

my $mwf = $mw->Scrolled('Pane', 
               -scrollbars=>'osoe', 
           -sticky=>'nwse',
           )->pack(-expand=>1, -fill=>'both');

my $f1 = $mwf->Frame()->pack(-expand=>1,-fill=>'both');
my $f2 = $mwf->Frame()->pack(-expand=>1,-fill=>'both');

my %canv;

for (0..4){
  $canv{$_}{'obj'} = $f1->Scrolled('Canvas',
            -height => 100,
            -width => 100,
            -bg =>'white',
        -scrollbars => 'osoe',
        -scrollregion => [ 0, 0, 500, 500 ], 
   )->pack(-side =>'left' ,-padx=>10,-pady=>10,-expand=>1,-fill=>'both
+');

  $canv{$_}{'obj'}->createText(50,50,
    -text   => $_,
    -anchor => 'center',
    );

my $num = $_;
$canv{$num}{'obj'}->CanvasBind( '<FocusOut>' => sub{
           $canv{$num}{'obj'}->configure(-bg=>'lightyellow');
   } );

$canv{$num}{'obj'}->CanvasBind( '<FocusIn>' => sub{
           $canv{$num}{'obj'}->configure(-bg=>'lightgreen');
   } );
}

for (5..9){
  $canv{$_}{'obj'} = $f2->Scrolled('Canvas',
            -height => 100,
            -width => 100,
        -bg =>'white',
            -scrollbars => 'osoe',
        -scrollregion => [ 0, 0, 500, 500 ], 
   )->pack(-side =>'left', -padx=>10,-pady=>10 ,-expand=>1,-fill=>'bot
+h');

  $canv{$_}{'obj'}->createText(50,50,
    -text   => $_,
    -anchor => 'center',
    );

my $num = $_;
$canv{$num}{'obj'}->CanvasBind( '<FocusOut>' => sub{
           $canv{$num}{'obj'}->configure(-bg=>'lightyellow');
   } );

$canv{$num}{'obj'}->CanvasBind( '<FocusIn>' => sub{
           $canv{$num}{'obj'}->configure(-bg=>'lightgreen');
   } );
}


my $button = $mw->Button(-text=>'Focus 1',
   -command => sub{
       $canv{1}{'obj'}->focusForce;
       $canv{1}{'obj'}->configure(-bg=>'blue');
     
     })->pack();


MainLoop();
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