This is my first post, so please be gentle if I have made any noob mistakes :)

I have found a post that attempts to tackle this problem, but the solutions provided are not very simple, or complete.

see Using Tk::Text and '<<Modified>>'

I need:

I am looking for something as simple as (or as close as possible): 

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

use Tk;

# Global variables
my $entry_val;

# Main Window
my $mw = new MainWindow;
$mw->Entry(
   -validate=>"all", 
   -validatecommand=>\&handleEvent, 
   -textvariable=>\$entry_val,
)->pack();

MainLoop;

# Callbacks
sub handleEvent {
   my ($new_val, $chars_2_change, $curr_val, $index, $action) = @_;

   # do nothing if No Change and No Force Validate
   if (!$chars_2_change && $action != -1){
      return;
   }

   # do something meaningful here.
   # for now, just print the $new_val
   print $new_val."\n";
}

[download]

While the above code works great, it only satisfies 2 out of my 3 requirements. I am hoping that I have missed a widget that provides this functionality simply, or some option(s) of Entry that I may have overlooked to provide scrollable multi-line support.

In reply to using TK Text (or something similar), is there a simple way to get the -validate=>"all" functionality in TK Entry? by noelgolding

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