c#-全局键盘钩子

using System;

using System.Collections.Generic;

using System.Text;

using System.Windows.Forms;

using System.Runtime.InteropServices;

using System.Diagnostics;

namespace WebClick_Tool

{

    public class KeyPress_o

    {

        [StructLayout(LayoutKind.Sequential)]

        public class KeyBoardHookStruct

        {

            public int vkCode;

            public int scanCode;

            public int flags;

            public int time;

            public int dwExtraInfo;

        }

        //委托

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

        static int hHook = 0;

        public const int WH_KEYBOARD_LL = 13;

        //LowLevel键盘截获，如果是WH_KEYBOARD＝2，并不能对系统键盘截取，Acrobat Reader会在你截取之前获得键盘。

        static HookProc KeyBoardHookProcedure;

        //设置钩子

        [DllImport("user32.dll")]

        public static extern int SetWindowsHookEx(int idHook, HookProc lpfn, IntPtr hInstance, int threadId);

        [DllImport("user32.dll", CharSet = CharSet.Auto, CallingConvention = CallingConvention.StdCall)]

        //抽掉钩子

        public static extern bool UnhookWindowsHookEx(int idHook);

        [DllImport("user32.dll")]

        //调用下一个钩子

        public static extern int CallNextHookEx(int idHook, int nCode, int wParam, IntPtr lParam);

        [DllImport("kernel32.dll")]

        public static extern int GetCurrentThreadId();

        [DllImport("kernel32.dll")]

        public static extern IntPtr GetModuleHandle(string name);

        public static void Hook_Start()

        {

            if (hHook == 0)

            {

                KeyBoardHookProcedure = new HookProc(KeyBoardHookProc);

                hHook = SetWindowsHookEx(WH_KEYBOARD_LL, KeyBoardHookProcedure,

                        GetModuleHandle(Process.GetCurrentProcess().MainModule.ModuleName), 0);

                //如果设置钩子失败.

                if (hHook == 0)

                {

                    Hook_Clear();

                }

            }

        }

        /// <summary>

        /// 取消钩子事件

        /// </summary>

        public static void Hook_Clear()

        {

            bool retKeyboard = true;

            if (hHook != 0)

            {

                retKeyboard = UnhookWindowsHookEx(hHook);

                hHook = 0;

            }

        }

        public static int KeyBoardHookProc(int nCode, int wParam, IntPtr lParam)

        {

            if (nCode >= 0)

            {

                KeyBoardHookStruct kbh = (KeyBoardHookStruct)Marshal.PtrToStructure(lParam, typeof(KeyBoardHookStruct));

                Keys k = (Keys)Enum.Parse(typeof(Keys), kbh.vkCode.ToString());

                switch (k)

                {

                    case Keys.F2:

                        if (kbh.flags == 0)

                        {

                            // 这里写按下后做什么事

                            //Main.GB = true;

                            MainForm.Fs(FormBorderStyle.FixedSingle);

                            MainForm.StopAll = true;

                            MainForm.DisMes("停止...");

                            MainForm.Enb(true);

                        }

                        else if (kbh.flags == 128)

                        {

                            //放开后做什么事

                        }

                        return 1;

                }

            }

            return CallNextHookEx(hHook, nCode, wParam, lParam);

        }

    }

}
巴特西

c#-全局键盘钩子

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