#!/usr/bin/perl

use strict;
use warnings;
use Term::InKey;

while(my $key = ReadKey) {
   Clear;
   print "You typed: ".$key;
}

use Term::ReadKey;
  if (defined ($char = ReadKey(-1)) ) 
   {
    if(ord($char) == 27)
     {
      ...
     }
   }

#!/usr/bin/perl

use strict;
use warnings;
use Win32::KeyState qw(:get);

while(1) {
   print 'CapsNum is ', GetNumLock() ? 'On' : 'Off', "\n";
}

if (GetKeyState(0x10) & 1) {
      print "Shift key is depressed\n" 
   } else {
      print "Shift key is pressed\n" 
   }

#!/usr/local/bin/perl -w

use Tk;
use Win32::KeyState qw(:get);

my $main =  new Tk::MainWindow;
$main->geometry('1030x740');

my $vis = 1;

sub read_stuff
 {
  &switch_vis if ((GetKeyState(0x1b) & 1) == 1);
 }
$handler = $main->repeat(500, \&read_stuff);


sub switch_vis
 {
  if($vis == 0)
   {
    $vis = 1;
    $main->deiconify;
   }
  else
   {
    $vis = 0;
    $main->iconify;
   }
 }

MainLoop;

#!/usr/bin/perl
use strict;

package MyModule;
use base qw/Win32::API::Interface/;

__PACKAGE__->generate( "kernel32", "SetWindowsHookEx", "WH_MOUSE", \&test, "NULL", 0 );

1;

my $obj = MyModule->new();
$obj->SetWindowsHookEx();


sub test
 {
  print "Mouse Event\n";
 }

#!/usr/local/bin/perl -w

use Tk;
use Win32::API;

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

my $main =  new Tk::MainWindow;
$main->geometry('1030x740');

my $vis = 1;

sub read_stuff
{
 &switch_vis if ((GetAsyncKeyState(0x04) & 1) == 1);
}
$handler = $main->repeat(50, \&read_stuff);


sub switch_vis
{
  if($vis == 0)
   {
    $vis = 1;
    $main->deiconify;
   }
  else
   {
    $vis = 0;
    $main->withdraw;
   }
}

MainLoop;