Redefining a sub:

#!/usr/bin/perl
use warnings;
no warnings "redefine";
use Tk;
use Tk::TableMatrix;

sub Tk::TableMatrix::Paste
{

print "start\n";
 my $w = shift;
 my $cell = shift || ''; ## Perltk not sure if translated correctly
 my $data;
 if ($cell ne '')
  {
   eval{ $data = $w->GetSelection(); }; return if($@);
  }
 else
  {
   eval{ $data = $w->GetSelection('CLIPBOARD'); }; return if($@);
   $cell = 'active';
  }
 $w->PasteHandler($w->index($cell),$data);
 $w->focus if ($w->cget('-state') eq 'normal');
print "end\n";
}

my $top = MainWindow->new;

my $arrayVar = {};

foreach my $row  (0..20){
    foreach my $col (0..10){
        $arrayVar->{"$row,$col"} = "r$row, c$col";
    }
}

my $t = $top->Scrolled('TableMatrix', -rows => 21, -cols => 11, 
                              -width => 6, -height => 6,
                  -titlerows => 1, -titlecols => 1,
                  -variable => $arrayVar,
                  -selectmode => 'extended',
                  -resizeborders => 'both',
                  -titlerows => 1,
                  -titlecols => 1,
                  -bg => 'white',
                 #  -state => 'disabled'
                #  -colseparator => "\t",
                #  -rowseparator => "\n"
                    );
            
$t->tagConfigure('active', -bg => 'gray90', -relief => 'sunken');
$t->tagConfigure( 'title', -bg => 'gray85', -fg => 'black', -relief =>
+ 'sunken');

# $t->bind("<Any-Enter>", sub { $t->focus });

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

Tk::MainLoop;
[download]

Creating a custom package: (shown with a Tk::Text widget as example ) which allows you to redefine a sub, without warnings.

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

package Tk::MyText;
require Tk::Text;
use base qw/Tk::Text/;
Construct Tk::Widget 'MyText';

sub InsertKeypress {
  my($w, $char) = @_;
   if (ord($char) < 27) {
     print chr(ord($char) | 0x40), "\n";
     # only Control-G/J/L/M/Q/R/S/U/W/Y/Z are making it to here
   } else {
  $w->SUPER::InsertKeypress($char);
  }
}

package main;

my $top = tkinit;
my $text = $top->MyText->pack;

$text->eventAdd('<<Bogus>>' => '<Control-Key-G>','<Control-Key-g>');
$text->bind('<<Bogus>>', 
     sub { $text->insert('end'," <-- How do I supress this?\n") });

print $text->eventInfo('<<Bogus>>');

MainLoop;
[download]

and a second package version, which uses ClassInit to gain access to the $mw bindings too.

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

package Tk::MyText;

require Tk::Text;
use base qw/Tk::Text/;
Construct Tk::Widget 'MyText';

sub ClassInit {
  print "ClassInit [@_]\n";
  my($class,$mw) = @_;
  $class->SUPER::ClassInit($mw);
  $mw->bind($class,'<Control-KeyPress>','NoOp');
  $class;
}
#####################################################

package main;

my $top = tkinit;
my $text = $top->MyText->pack;

$text->eventAdd('<<Bogus>>' => '<Control-Key-G>','<Control-Key-g>');
$text->bind('<<Bogus>>',

sub { $text->insert('end'," <-- How do I supress this?\n") });

print $text->eventInfo('<<Bogus>>');

MainLoop;
[download]