C#實現(xiàn)的鼠標(biāo)鉤子

更新時間：2015年03月11日 14:33:47 投稿：hebedich

本文給大家分享的是使用C#實現(xiàn)鼠標(biāo)鉤子功能，程序已能獲取鼠標(biāo)坐標(biāo)，其他就沒別的功能了，有需要的小伙伴參考下吧。

C#實現(xiàn)的鼠標(biāo)鉤子，可以獲取鼠標(biāo)在屏幕中的坐標(biāo)，記得要以管理員權(quán)限運行才行

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Reflection;

using System.Runtime.InteropServices;

using System.Text;

using System.Windows.Forms;

namespace app01

{

    public partial class Form1 : Form

    {

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

        //定義鉤子句柄

        public static int hHook = 0;

        //定義鉤子類型

        public const int WH_MOUSE_LL = 14;

        public HookProc MyProcedure;

        //安裝鉤子

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

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

        //卸載鉤子

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

        public static extern bool UnhookWindowsHookEx(int idHook);

        //調(diào)用下一個鉤子

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

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

        [StructLayout(LayoutKind.Sequential)]

        public class POINT

        {

            public int x;

            public int y;

        }

        [StructLayout(LayoutKind.Sequential)]

        public class MouseHookStruct

        {

            public POINT pt;

            public int hwnd;

            public int wHitTestCode;

            public int dwExtraInfo;

        }

        public Form1()

        {

            InitializeComponent();

        }

        private void button1_Click(object sender, EventArgs e)

        {

            if (hHook == 0)

            {

                MyProcedure = new HookProc(this.MouseHookProc);

                //這里掛節(jié)鉤子

                hHook = SetWindowsHookEx(WH_MOUSE_LL, MyProcedure, Marshal.GetHINSTANCE(Assembly.GetExecutingAssembly().GetModules()[0]), 0);

                if (hHook == 0)

                {

                    MessageBox.Show("SetWindowsHookEx Failed");

                    return;

                }

                button1.Text = "卸載鉤子";

            }

            else

            {

                bool ret = UnhookWindowsHookEx(hHook);

                if (ret == false)

                {

                    MessageBox.Show("UnhookWindowsHookEx Failed");

                    return;

                }

                hHook = 0;

                button1.Text = "安裝鉤子";

            }

        }

        public int MouseHookProc(int nCode, IntPtr wParam, IntPtr lParam)

        {

            MouseHookStruct MyMouseHookStruct = (MouseHookStruct)Marshal.PtrToStructure(lParam, typeof(MouseHookStruct));

            if (nCode < 0)

            {

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

            }

            else

            {

                String strCaption = "x = " + MyMouseHookStruct.pt.x.ToString("d") + "  y = " + MyMouseHookStruct.pt.y.ToString("d");

                this.Text = strCaption;

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

            }

        }

    }

}