use Tk;
use Tk::Table;
$t = MainWindow->new(-title=>"tablesize")
    ->Table(rows => 5, columns => 5)->pack;
for $x (0 .. 4) {
    for $y (0 .. 4) {
        $t->put($x, $y, "$x:$y");
    }
};
$t->parent->Button(-text    =>"+",
                   -command => sub {
                       $x=$t->get(2,3);
                       $x->configure(-width => $x->cget("-width") + 1)
                   }
               )->pack;
MainLoop;
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I ran your code and it works great. I tried to add a '-' button but can't get it to work. Any ideas?

use Tk;
use Tk::Table;
$t = MainWindow->new(-title=>"tablesize")
    ->Table(rows => 5, columns => 5)->pack;
for $x (0 .. 4) {
    for $y (0 .. 4) {
        $t->put($x, $y, "$x:$y");
    }
};

$t->parent->Button(-text    =>"+",
                   -command => sub {
                       $x1=$t->get(2,2);
                       $x1->configure(-width => $x1->cget("-width") + 
+1);
                   }
               )->pack;
               
$t->parent->Button(-text    =>" - ",
                   -command => sub {
                       $x1=$t->get(2,2);
                       $x1->configure(-width => $x1->cget("-width") - 
+1);
                   }
               )->pack;
MainLoop;
[download]

See the source to sub Tk::Table::Layout

You may have luck, but maybe you should look at TableMatrix or TableMatrix::Spreadsheet.

For example:

#!/usr/bin/perl
use warnings;
use strict;
use Tk;
use Tk::TableMatrix;

my $top = MainWindow->new;

my $arrayVar = {};

print "Filling Array...\n";
my ($rows,$cols) = (400, 10);
  foreach my $row  (0..($rows-1)){
     foreach my $col (0..($cols-1)){
       $arrayVar->{"$row,$col"} = "$row,$col";
   }
}

print "Creating Table...\n";
## Test out the use of a callback to define tags on rows and columns
sub colSub{
  my $col = shift;
   return "OddCol" if( $col > 0 && $col%2) ;
}

my $label = $top->Label(-text => "TableMatrix v2 Example");

my $t = $top->Scrolled('TableMatrix', -rows => $rows, -cols => $cols,
    -width => 6, -height => 6,
 -titlerows => 1, -titlecols => 1,
 -variable => $arrayVar,
 -coltagcommand => \&colSub,
 -colstretchmode => 'last',
 -rowstretchmode => 'last',
 -selectmode => 'extended',
 -selecttitles => 0,
 -drawmode => 'slow',
 -scrollbars=>'se'
 );


my $button = $top->Button( -text => "Exit", -command => sub{
$top->destroy});

# hideous Color definitions here:
$t->tagConfigure('OddCol', -bg => 'brown', -fg => 'pink');
$t->tagConfigure('title', -bg => 'red', -fg => 'blue', -relief => 'sun
+ken');
$t->tagConfigure('dis', -state => 'disabled');

my $i = -1;
my $first = $t->cget(-colorigin);

my $anchor;
foreach $anchor( qw/ n s e w nw ne sw se c /){
 $t->tagConfigure($anchor, -anchor => $anchor);
 $t->tagRow($anchor, ++$i);
 $t->set( "$i,$first",$anchor);
}

$top->fontCreate('courier', -family => 'courier', -size => 10);
$t->tagConfigure('s', -font => 'courier', -justify => 'center');

$t->colWidth( -2 => 8, -1 => 9, 0=> 12,  4=> 14);

$label->pack( -expand => 1, -fill => 'both');

$t->pack(-expand => 1, -fill => 'both');
$button->pack(-expand => 1, -fill => 'x');

Tk::MainLoop;
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