Win32::Daemon::RegisterCallbacks(
    {
        start    => \&startService,
        stop     => \&stopService,
        pause    => \&pauseService,
        continue => \&continueService,
        running  => \&runService,
    }
);

##</code><code>##


sub startService
{
    # start the win32 service daemon
    # ------------------------------
    my ($event, $context) = @_;

    $context -> { last_state } = SERVICE_RUNNING;
    Win32::Daemon::State( SERVICE_START_PENDING, 30000 );

    # do what need to be done
    
    # exit
    Win32::Daemon::State( SERVICE_RUNNING );
}

# ==============================================================================

sub stopService
{
    # stop the win32 service daemon
    # -----------------------------
    my ($event, $context) = @_;
    $context -> { last_state } = SERVICE_STOPPED;
    Win32::Daemon::State( SERVICE_STOP_PENDING, 30000 );
    
    # do what needs to be done

    # exit
    Win32::Daemon::State( SERVICE_STOPPED );
    Win32::Daemon::StopService();
}

# ==============================================================================

sub pauseService
{
    # let the win32 service daemon make a pause
    # -----------------------------------------
    my ($event, $context) = @_;
    $context -> { last_state } = SERVICE_PAUSED;

    # do what needs to be done

    # exit
    Win32::Daemon::State( SERVICE_PAUSED );
}

# ==============================================================================

sub continueService
{
    # let the win32 service daemon exit a pause
    # -----------------------------------------
    my ($event, $context) = @_;
    $context -> { last_state } = SERVICE_RUNNING;

    # do what needs to be done

    # exit
    Win32::Daemon::State( SERVICE_RUNNING );
}

# ==============================================================================

sub runService
{
    # this is the callback of by the win32 service daemon
    # ---------------------------------------------------
    my ($event, $context) = @_;

    if ( Win32::Daemon::State() == SERVICE_RUNNING )
    {
        # count the number of calls (I do not know why)
        $context -> { count }++;
    }
}