A quick Tk Application

[Scott Penrose]

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Hi Dudes.

I have a favour to ask if someone has time please. I am no Tk expert 
and have run out of time to do a quick demonstration. I was wondering 
if someone could write up a very very small Tk app for me for the VTR 
conference tomorrow.

What I am looking for is a simple application that:

	* Has two Text Box - each 5 characters wide
	* Has a button (Clear) to clear those
	* Has a button (Exit) to exit
	* Has each of the two Text Box values 'tied' so that I can trigger 
when they change.

Then on change of the text if they could call "sendit($a, $b);" - it 
would be finished.

Here is my attempt...

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

my $top = MainWindow->new;
$top->Button(-text => "Exit", -command => sub { exit 0; })->pack;
$top->Button(-text => "Clear", -command => sub { })->pack;
$top->Entry(-width => 5)->pack;	# sub { sendit(1, $val); }
$top->Entry(-width => 5)->pack;	# sub { sendit(2, $val); }
MainLoop;

sub sendit {
	my ($line, $text) = @_;
	# XXX Call send code here.
}

The purpose of it is to demonstrate both a little tiny Tk script (I 
don't do any Tk programming and it still only took me 5 minutes to 
learn how to do the above) - and a network connection to another daemon 
controlling a big LED Display.

The actual send code is:

my $sock = IO::Socket::INET->new(
         PeerPort  => 2000,
         PeerAddr  => '10.0.1.16',
         Proto     => 'tcp',
) or die "Can't bind : $@\n";
$sock->send("$line $text\n");

My main problem is that I don't know how to trigger the call to the 
sendit on change of text. If that is too hard, press button will be 
just as good.

Scott
- -- 
Scott Penrose
Welcome to the Digital Dimension
http://www.dd.com.au/
scottp at dd.com.au

Dismaimer: Contents of this mail and signature are bound to change 
randomly. Whilst every attempt has been made to control said 
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butterflies either.

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