Global Hook.

Kode 

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using System.Threading;
using System.Runtime.InteropServices;
using System.Reflection;
using System.Runtime.CompilerServices;
using System.Diagnostics;

namespace Global_Hooking
{
    class GlobalHook
    {
        [StructLayout(LayoutKind.Sequential)]
        private class POINT
        {
            public int x;
            public int y;
        }


        [StructLayout(LayoutKind.Sequential)]
        private class MouseHookStruct
        {
            public POINT pt;
            public int hwnd;
            public int wHitTestCode;
            public int dwExtraInfo;
        }

        [StructLayout(LayoutKind.Sequential)]
        private class MouseLLHookStruct
        {
            public POINT pt;
            public int mouseData;
            public int flags;
            public int time;
            public int dwExtraInfo;
        }

        [StructLayout(LayoutKind.Sequential)]
        private class KeyboardHookStruct
        {
            public int vkCode;
            public int scanCode;
            public int flags;
            public int time;
            public int dwExtraInfo;
        }
        private const int WH_MOUSE = 0x7;
        private const int WH_MOUSE_LL = 0x14;
        private const int WH_KEYBOARD_LL = 0x13;
        private const int WM_MOUSEMOVE = 0x200;
        private const int WM_LBUTTONDOWN = 0x201;
        private const int WM_RBUTTONDOWN = 0x204;
        private const int WM_MBUTTONDOWN = 0x207;
        private const int WM_LBUTTONUP = 0x202;
        private const int WM_RBUTTONUP = 0x205;
        private const int WM_MBUTTONUP = 0x208;
        private const int WM_LBUTTONDBLCLK = 0x203;
        private const int WM_RBUTTONDBLCLK = 0x206;
        private const int WM_MBUTTONDBLCLK = 0x209;
        private const int WM_MOUSEWHEEL = 0x020A;
        private const int WM_KEYDOWN = 0x100;
        private const int WM_KEYUP = 0x101;
        private const int WM_SYSKEYDOWN = 0x104;
        private const int WM_SYSKEYUP = 0x105;
        private const byte VK_SHIFT = 0x10;
        private const byte VK_CAPITAL = 0x14;
        private const byte VK_NUMLOCK = 0x90;

        private static HookProc MouseHookProcedure;
        private static HookProc KeyboardHookProcedure;
       
        private int hMouseHook = 1;
        private int hKeyboardHook = 0;

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
        private static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hMod, int dwThreadId);
        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall, SetLastError = true)]
        private static extern int UnhookWindowsHookEx(int idHook);
        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        private static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam);
        [DllImport("user32")]
        private static extern int GetKeyboardState(byte[] pbKeyState);
        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]
        private static extern short GetKeyState(int vKey);
        [DllImport("Kernel32.dll")]
        protected static extern IntPtr GetCurrentProcess();
        [DllImport("Kernel32.dll")]
        protected static extern int GetLastError();
        [DllImport("user32.dll")]
        protected static extern IntPtr GetWindowThreadProcessId(IntPtr hWnd, IntPtr ProcessId);
        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr GetModuleHandle(string lpModuleName);



        public GlobalHook()
        {
            MouseHookProcedure = new HookProc(this.MouseHookProc);
            
            using (Process curProcess = Process.GetCurrentProcess())
            using (ProcessModule curModule = curProcess.MainModule)
            {
            hMouseHook = SetWindowsHookEx(WH_MOUSE_LL, MouseHookProc, GetModuleHandle(curModule.ModuleName),0);
            }
            if (hMouseHook == 0)
            {
                MessageBox.Show("Error");    
            }
        }

         ~GlobalHook()
        {
            hMouseHook = UnhookWindowsHookEx(hMouseHook);
        }

        private int KeyboardHookProc(int nCode, int wParam, IntPtr lParam)
        {
            return CallNextHookEx(hKeyboardHook, nCode, wParam, lParam);
        }

        private int MouseHookProc(int nCode, int wParam, IntPtr lParam)
        {
            if (nCode >= 0)
            {
                switch (wParam)
                {
                    case WM_MOUSEMOVE:
                        MessageBox.Show("WM_MOUSEMOVE");
                        break;
                }
                CallNextHookEx(hMouseHook, nCode, wParam, lParam);
            }
             
                return CallNextHookEx(hMouseHook, nCode, wParam, lParam);
        }

        private delegate int HookProc(int nCode, int wParam, IntPtr lParam);

    }
}