package Kbh;
our $VERSION = '0.01';
require XSLoader;
XSLoader::load('Kbh', $VERSION);
sub process_key {
    print "process_key in perl\n";
    
}
1;

##</code><code>##

use ExtUtils::MakeMaker;
WriteMakefile (
    NAME => 'Kbh',
    VERSION => '0.01',
    OBJECT => 'hook.o Kbh.o',
);

##</code><code>##

LRESULT CALLBACK HookCallback(int nCode, WPARAM wParam, LPARAM lParam);
void processKey();
void register_hook();
void unregister_hook();
void MsgLoop();

##</code><code>##

#include <windows.h>
#include <WinAble.h>
#include "stdio.h"
#include "hook.h"

HHOOK hook;

LRESULT CALLBACK HookCallback( int nCode, WPARAM wParam, LPARAM lParam ) {
    processKey();
    return CallNextHookEx( hook, nCode, wParam, lParam );
}

void processKey() {
    printf("processKey  in C\n");

}

void MsgLoop() {
    MSG message;

    while ( GetMessage( &message, NULL, 0, 0 ) ) {
        TranslateMessage(&message);
        DispatchMessage(&message);
    }
}

void register_hook() {
    HMODULE hMod = (HMODULE) GetModuleHandle(NULL);
    hook = SetWindowsHookEx( WH_KEYBOARD_LL, HookCallback, hMod, 0 );

}

void unregister_hook() {
    UnhookWindowsHookEx(hook);

}

##</code><code>##

#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include "ppport.h"
#include "hook.h"

MODULE = Kbh               PACKAGE = Kbh

PROTOTYPES: DISABLE

void
MsgLoop()

void
register_hook()

void
unregister_hook()

void 
processKey()

    INIT:
        int count;
    PPCODE:
        dSP;
        PUSHMARK(SP);
        count= call_pv("Kbh::process_key", G_DISCARD|G_NOARGS); 
    if (count != 0)
        croak("Big trouble\n");

##</code><code>##

Perl Makefile.pl
dmake

##</code><code>##

use lib qw(./lib ./blib/arch/auto/Kbh);
use Kbh;
Kbh::register_hook();
Kbh::MsgLoop;
Kbh::unregister_hook();