c# wince 键盘钩子

 public class HookKeyClass
    {
        public delegate int HookKeyProc(int code, IntPtr wParam, IntPtr lParam);
        public delegate void KeyEventHandler(int KeyValue);
        public event KeyEventHandler KeyEvent;
        private HookKeyProc hookKeyDeleg;
        private int hHookKey = 0;
        public HookKeyClass()
        { Start(); }

        ~HookKeyClass()
        { Stop(); }

        #region public methods
        //安装钩子
        private void Start()
        {
            if (hHookKey != 0)
            {
                //Unhook the previouse one
                this.Stop();
            }

            hookKeyDeleg = new HookKeyProc(HookKeyProcedure);
            hHookKey = SetWindowsHookEx(WH_KEYBOARD_LL, hookKeyDeleg, GetModuleHandle(null), 0);
            if (hHookKey == 0)
            {
                throw new SystemException("Failed acquiring of the hook.");
            }
        }

        //拆除钩子
        private void Stop()
        {
            UnhookWindowsHookEx(hHookKey);
        }

        #endregion

        #region protected and private methods
        private int HookKeyProcedure(int code, IntPtr wParam, IntPtr lParam)
        {
            switch ((int)wParam)
            {
                case 257:         //按下响应
                    KBDLLHOOKSTRUCT hookStruct = (KBDLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(KBDLLHOOKSTRUCT));
                    if (code < 0)
                    { return CallNextHookEx(hookKeyDeleg, code, wParam, lParam); }
                    //if(hookStruct.vkCode==201 |
                    KeyEvent(hookStruct.vkCode);
                    break;
                case 256:

                    break;

                default: break;
            }

            return CallNextHookEx(hookKeyDeleg, code, wParam, lParam);
        }
        #endregion

        #region P/Invoke declarations

        [DllImport("coredll.dll")]
        private static extern int SetWindowsHookEx(int type, HookKeyProc HookKeyProc, IntPtr hInstance, int m);
        //private static extern int SetWindowsHookEx(int type, HookMouseProc HookMouseProc, IntPtr hInstance, int m);

        [DllImport("coredll.dll")]
        private static extern IntPtr GetModuleHandle(string mod);

        [DllImport("coredll.dll")]
        private static extern int CallNextHookEx(HookKeyProc hhk, int nCode, IntPtr wParam, IntPtr lParam);

        [DllImport("coredll.dll")]
        private static extern int GetCurrentThreadId();

        [DllImport("coredll.dll", SetLastError = true)]
        private static extern int UnhookWindowsHookEx(int idHook);
        private struct KBDLLHOOKSTRUCT
        {
            public int vkCode;
            public int scanCode;
            public int flags;
            public int time;
            public IntPtr dwExtraInfo;
        }

        const int WH_KEYBOARD_LL = 20;
        public class KeyBoardInfo
        {
            public int vkCode;
            public int scanCode;
            public int flags;
            public int time;
        }
        #endregion
    }

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Text;
using System.Windows.Forms;
using TaxiDLL;

namespace Taxi
{
    public partial class FormKey : Form
    {
        HookKeyClass hk = new HookKeyClass();

        public FormKey()
        {
            InitializeComponent();
        }

        private void FormKey_Load(object sender, EventArgs e)
        {
            hk.KeyEvent += new HookKeyClass.KeyEventHandler(hk_KeyEvent);    //按键事件
        }
       
        private void hk_KeyEvent(int KeyValue)
        {
            textBox1.Text = KeyValue.ToString();
            //switch (KeyValue)
            //{
            //    case 206: textBox1.Text = KeyValue.ToString(); break;
            //    default: break;
            //}
        }
       
    }
}