use Tk;
use Win32::API;
use Tk::JPEG;
use Tk::StayOnTop;

my $boss_key = 0x04;

my $main =  new Tk::MainWindow( -title => 'IDEAL');
$main->geometry('1030x740');
my $image = $main->Photo('-format' => 'jpeg', -file => 'boss.jpg');
$main->Label(-image => $image)->pack();

Win32::API->Import('user32', 'GetAsyncKeyState', 'I', 'I');

my $vis = 1;
sub read_stuff
{
if ($vis) {
  $main->stayOnTop;
  $main->focus;
  $main->state("zoomed");
}
&switch_vis if ((GetAsyncKeyState($boss_key) & 1) == 1);
}
$main->repeat(50, \&read_stuff);


sub switch_vis
{
 unless($vis)
  {    
   $main->deiconify;
  }
 else
  {    
   $main->withdraw;
  }
  $vis = !$vis;
}

MainLoop;