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Windows Mobile C#按键钩子

yoours2014-07-23 14:08:26 阅读 1771
简介一边听听音乐，一边写写文章。
 
using System.Runtime.InteropServices; 
using System; 
 
public class KeyBoardHookClass 
{ 
    //声明代理，用于回调函数 
    public delegate int HookProc(int nCode, int wParam, ref KeyMSG lParam); 
    private static int hKeyboardHook = 0; 
    private HookProc KeyboardHookProcedure; 
 
    //win32下使用user32.dll  windows mobile 6.5下使用coredll.dll 
    //设置钩子 
    [DllImport("coredll.dll", EntryPoint = "SetWindowsHookEx")] 
    public static extern int SetWindowsHookEx(HookType idHook, HookProc lpfn, IntPtr hInstance, int threadId); 
    //抽调钩子 
    [DllImport("coredll.dll", EntryPoint = "UnhookWindowsHookEx")] 
    public static extern bool UnhookWindowsHookEx(int idHook); 
 
    //获得模块的句柄 
    [DllImport("coredll.dll", EntryPoint = "GetModuleHandle")] 
    public static extern IntPtr GetModuleHandle(string name); 
 
    //钩子消息循环 
    [DllImport("coredll.dll", EntryPoint = "CallNextHookEx")] 
    public static extern int CallNextHookEx(int idHook, int nCode, int wParam, ref KeyMSG lParam); 
 
    //钩子类型,可以根据情况自定义类型 
    public enum HookType 
    { 
        WH_KEYBOARD = 2, 
        WH_KEYBOARD_LL = 20            //键盘钩子 
    } 
 
    //键值枚举,可以把你想屏蔽的按键定义在这个枚举里面 
public enum KeyValueMap : 
    int 
    { 
        VK_ESCAPE = 0x1B,      //ESC 
        VK_RETURN = 0x0D,         //RETURN,回车 
        VK_APP5 = 0xC5,        //蓝色FN 
        VK_APP2 = 0xC2,       //黄色FN 
        VK_APP1 = 0xC1,         //WIN,菜单键 
        VK_TEND = 0x73,      //End,挂断键 
        VK_TTALK = 0x72,     //Talk,拨号键 
        VK_TVOLUMEUP = 0x75,    //音量+ 
        VK_TVOLUMEDOWN = 0x76,//音量- 
        VK_BACK = 0x08,         //BKSP 
        VK_SHIFT = 0x10,        //SHIFT 
        VK_TAB = 0x09,        //TAB 
        VK_TSTAR = 0x77,        //*,星号 
        VK_TPOUND = 0x78,        //#,井号 
        WM_KEYDOWN = 0x0100, 
        WM_KEYUP = 0x0101, 
        WM_SYSKEYDOWN = 0x0104, 
        WM_SYSKEYUP = 0x0105 
    } 
 
    //键盘结构 
    public struct KeyMSG 
    { 
        public int vkCode; //键值 
        public int scanCode; 
        public int flags; 
        public int time; 
        public int dwExtraInfo; 
    } 
 
    //打开钩子 
    public void StartHook() 
    { 
        try 
        { 
            KeyboardHookProcedure = new HookProc(KeyboardHookProc); 
            hKeyboardHook = SetWindowsHookEx(HookType.WH_KEYBOARD_LL, KeyboardHookProcedure, IntPtr.Zero, 0); 
        } 
        catch (Exception ex) 
        { 
            StopHook(); 
            throw new Exception(ex.ToString() + "安装钩子失败."); 
        } 
    } 
 
    //关闭钩子 
    public void StopHook() 
    { 
        try 
        { 
            UnhookWindowsHookEx(hKeyboardHook); 
        } 
        catch (Exception ex) 
        { 
            throw new Exception(ex.ToString() + "卸下钩子失败."); 
        } 
    } 
 
    //钩子回调函数 
    private int KeyboardHookProc(int nCode, int wParam, ref KeyMSG lParam) 
    { 
        if (nCode >= 0) 
        { 
            //wParam用于判断是按键按下还是弹起 
            //Keys keyData = (Keys)wParam; 
            KeyMSG m = (KeyMSG)lParam; 
            if (wParam == (int)KeyValueMap.WM_KEYDOWN || wParam == (int)KeyValueMap.WM_KEYUP || wParam == (int)KeyValueMap.WM_SYSKEYDOWN || wParam == (int)KeyValueMap.WM_SYSKEYUP) 
            { 
                switch (m.vkCode) 
                { 
                case (int)KeyValueMap.VK_TEND://屏蔽掉挂断键 
                case (int)KeyValueMap.VK_TTALK: 
                { 
                    return 1; 
                } 
                } 
            } 
        } 
 
        return CallNextHookEx(hKeyboardHook, nCode, wParam, ref lParam); 
    } 
} 
 
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