I have found that I can set column widths using $wg->colWidth
Also I want to set characteristics (for example colour, state) of individual cells of a tablematrix.
So far, the only way I have found of setting the a cell’s colour and state is to:
1. Define a tag with the characteristics I want;
2. Use $wg->tagCell to add one of the defined tags to the cell.
This works as the code below shows. Is this the preferred way of setting cell characteristics?

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

my $mw = MainWindow->new;

my (%wg, %hashv);

print "Filling Array...\n";
my ($rows,$cols) = (10, 10);
 foreach my $row  (0..($rows-1)){
    foreach my $col (0..($cols-1)){
      $hashv{t1}{"$row,$col"} = 2*$row + 3*$col;
      $hashv{t2}{"$row,$col"} = 2*$row + 3*$col + 100;
   }
}

print "Creating Table t1\n";

$wg{t1} = $mw->Scrolled('TableMatrix', -rows => $rows, -cols => $cols,
 -width => 10, -height => 10,
 -titlerows => 1, -titlecols => 1,
 -variable => \%{$hashv{t1}},
 -coltagcommand => \&colSub1,
 -browsecommand => \&tbmx_browse_cmd_t1,
 -colstretchmode => 'last',
 -rowstretchmode => 'last',
 -selectmode => 'extended',
 -selecttitles => 0,
 -drawmode => 'slow',
 -scrollbars=>'se'
 );
$wg{t1}->grid(-row => 0, -column => 0);

# set the column widths

$wg{t1}->colWidth(0 => 2, 1 => 4, 2 => 6, 4 => 8);

# defining tags

$wg{t1}->tagConfigure('dis', -state => 'disabled', -bg => 'yellow');
$wg{t1}->tagConfigure('red', -bg => 'red'); 

$wg{t1}->tagCell('dis',"1,1");
$wg{t1}->tagCell('dis',"1,2");
$wg{t1}->tagCell('dis',"1,3");

$wg{t1}->tagCell('red',"3,1");
$wg{t1}->tagCell('red',"3,2");
$wg{t1}->tagCell('red',"3,3");

#=====================================================
#
# tbmx_browse_cmd_t1
#
# browse command for table matrix t1
#
#=====================================================

sub tbmx_browse_cmd_t1() {

my ($previous_index, $actual_index) = @_;

my ($row, $col) = split ',', $actual_index;
print "[tbmx_browse_cmd_t1] index actual <$actual_index> previous <$pr
+evious_index> row <$row> col <$col>\n";
}
Tk::MainLoop;
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