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

my $dx;
my $dy;

my $mw = MainWindow->new;
$mw->geometry("700x600");

my $canvas = $mw->Canvas(-width => 700, -height => 565,
                -bg => 'black',
        -borderwidth => 3, 
        -relief => 'sunken',
           )->pack;

my $closebutton = $mw->Button(-text => 'Exit', -command => sub{Tk::exi
+t(0)})
               ->pack; 

$canvas->createText(100,10, -text => 'Drag Red Peg to hole', 
                    -fill => 'white');


$canvas->create('oval', 300,300,500,500,
                    -fill=>'yellow',
                 );

my $dr = $canvas->createRectangle(0, 20, 50, 75, 
                             -fill => 'red',
                 -tags => ['move','red'],
                 );

$canvas->bind('move', '<1>', sub {&mobileStart();});
$canvas->bind('move', '<B1-Motion>', sub {&mobileMove();});
$canvas->bind('move', '<ButtonRelease-1>', sub {&mobileStop();});

MainLoop;

sub mobileStart {
      my $ev = $canvas->XEvent;
      ($dx, $dy) = (0 - $ev->x, 0 - $ev->y);
      $canvas->raise('current');
}

sub mobileMove {
      my $ev = $canvas->XEvent;
      $canvas->move('current', $ev->x + $dx, $ev->y +$dy);
      ($dx, $dy) = (0 - $ev->x, 0 - $ev->y);
      my @coords = $canvas->coords('current');
}

sub mobileStop{&mobileMove;}
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