#.. remove the headers same as yours so msg will be shorter.
my $mw = MainWindow->new;

my $arrayVar = {};

print "Filling Array...\n";
my ($rows,$cols) = (10, 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 $t = $mw->Scrolled('TableMatrix', -rows => $rows, -cols => $cols,
 -width => 6, -height => 6,
 -titlerows => 1, -titlecols => 1,
 -variable => $arrayVar,
 -coltagcommand => \&colSub,
 -colstretchmode => 'last',

 -rowtagcommand => \&rowSub,

 -rowstretchmode => 'last',
 -selectmode => 'extended',
 -selecttitles => 0,
 -drawmode => 'slow',
 -scrollbars=>'se'
 );


$mw->Button(-text => "Update", -command => \&update_table)
               ->pack(-side => 'bottom',-anchor => 'w');

#  Color definitions here:
$t->tagConfigure('active', -bg => 'blue', -fg => 'red', -relief => 'sunken');
$t->tagConfigure('OddCol', -bg => 'lightyellow', -fg => 'black');
$t->tagConfigure('title', -bg => 'lightblue', -fg => 'black', -relief => 'sunken');
$t->tagConfigure('dis', -state => 'disabled');
$t->pack(-expand => 1, -fill => 'both');
$t->focus;

Tk::MainLoop;

# $t->tagConfigure($anchor, -anchor => $anchor);
# $t->tagRow($anchor, ++$i);
# $t->set( "$i,$first",$anchor);
my $selected = -1;
my $prev_selected = -1;

sub update_table {
        #$t->tagCell('dis', '1,1' ); # REMOVED
        #$t->activate('2,2'); # REMOVED

        warn("\n\n\nprev_selected:'$prev_selected' , selected:'$selected'"); # ADDED
        $t->tagRow('active',$selected) if ($selected != -1); # ADDED
        $t->tagRow('OddCol',$prev_selected) if (defined $prev_selected && $prev_selected != -1); # ADDED
        $prev_selected = $selected; # ADDED
        warn("\n\n\npost updated prev_selected:'$prev_selected' , selected:'$selected'");

        
#       $t->configure(-padx =>( $t->cget(-padx)));
#       a trick needed sometimes to update                

}


sub rowSub{
  my $row = shift;
  $selected = $row; # ADDED
  warn ("\n\nrowSub - row: $row"); # ADDED

  return "Oddrow" if( $row > 0 && $row%2) ;
}