low level system hook

hola,

necesito recoger los eventos de tecla en mi aplicación, aunque esta no esté
activa, he tratado de pasar un ejemplo de system windows hooks que vi en vb
.net a c# , pero no me responde igual, no sé qué es lo que estoy haciendo
mal, os agradeceria me dierais una solución ;)

<codigo>
using System;

using System.Runtime.InteropServices;

namespace IOHTV

{

[ StructLayout( LayoutKind.Sequential)]

public struct KBDLLHOOKSTRUCT

{


int vkCode;

int scanCode;

int flags;

int time;

int dwExtraInfo;

}

public class KeyBoardHooksManager

{

public delegate int LowLevelKeyBoardProcDelegate(int nCode, int wParam, ref
KBDLLHOOKSTRUCT lParam);

[DllImport("user32.dll")]

public static extern int SetWindowsHookExA(int idHook,
LowLevelKeyBoardProcDelegate lpfn, int hMod, int dwThreadId);

[DllImport("user32.dll")]

public static extern int UnhookWindowsHookEx(int hHook);

[DllImport("user32.dll")]

public static extern int CallNextHookEx(int hHook, int nCode, int wParam,
ref KBDLLHOOKSTRUCT lParam);


public static int LowLevelKeyBoardProc(int nCode, int wParam, ref
KBDLLHOOKSTRUCT lParam)

{

Console.WriteLine("Key event");


return 1;

}

public const int WH_KEYBOARD_LL = 13;


public void Test()

{

KeyBoardHooksManager.SetWindowsHookExA(WH_KEYBOARD_LL, new
LowLevelKeyBoardProcDelegate(LowLevelKeyBoardProc) ,
Marshal.GetHINSTANCE(System.Reflection.Assembly.GetExecutingAssembly().GetMo
dules()[0]).ToInt32(), 0);

}

}


class Class1

{

[STAThread]

static void Main(string[] args)

{

KeyBoardHooksManager a = new KeyBoardHooksManager();

a.Test();

Console.Read();

}

}

}

</codigo>