C # low level keyboard manipulator not working

Question

This is the code for my keyhooking class, but it does not work. I was wondering if anyone could explain to me why? I will install it in another console application. The debug message gives the correct output, but the keyboard hook just does not capture the keys. I was hoping if someone would tell me why.

namespace GlobalHooks
{
    public class InterceptKeys
    {        
        private const int WH_KEYBOARD_LL = 13;
        private const int WM_KEYDOWN = 0x0100;

        private static IntPtr _hookID = IntPtr.Zero;
        private static String keysHooked = String.Empty;

        private static LowLevelHookProc keyboardHook;

        public delegate IntPtr LowLevelHookProc(int nCode, Int32 wParam, IntPtr lParam);
        public delegate void KeyboardHandleFunction(int vkCode);
        public static event KeyboardHandleFunction keyHookReturn;

        public InterceptKeys(KeyboardHandleFunction func)
        {
            keyHookReturn = func;
            keyboardHook = new LowLevelHookProc(HookCallback);
        }

        public static void debug()
        {
            Console.Write("\n[Success!] _hookID: "+_hookID);
            Console.Write("\n[Success!] keyboardProc: "+keyboardHook.ToString());
        }

        private IntPtr SetupHook(LowLevelHookProc keyProcess)
        {
            using (Process curProcess = Process.GetCurrentProcess())
            using (ProcessModule curModule = curProcess.MainModule)
            {
                return SetWindowsHookEx(WH_KEYBOARD_LL, keyProcess,
                    GetModuleHandle(curModule.ModuleName), 0);
            }
        }

        public void Hook()
        {
            _hookID = SetupHook(keyboardHook);
            debug();
        }

        public void Unhook()
        {
            UnhookWindowsHookEx(_hookID);
        }


        public static void OnCallbackReturn(int nCode)
        {
            if (keyHookReturn != null)
            {
                keyHookReturn(nCode);
            }
            else
            {
                throw new Exception();
            }
        }

        public static IntPtr HookCallback(int nCode, Int32 wParam, IntPtr lParam)
        {
            Console.WriteLine("Calledback"Wink;
            if (nCode >= 0 && wParam == WM_KEYDOWN)
            {
                int vkCode = Marshal.ReadInt32(lParam);
                Console.WriteLine((Keys)vkCode);
                OnCallbackReturn(nCode);
            }
            return CallNextHookEx((int)_hookID, nCode, wParam, lParam);
        }

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr SetWindowsHookEx(int idHook, LowLevelHookProc lpfn, IntPtr hMod, uint dwThreadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern bool UnhookWindowsHookEx(IntPtr hhk);

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr CallNextHookEx(int hhk, int nCode, int wParam, IntPtr lParam);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr GetModuleHandle(string lpModuleName);
    }
} 

Answer 1

Do you call Application.Runin your function Main?

In the standard Console stream there is no message loop that is necessary for the hooks to work correctly, it Application.Runwill take care of this.