<em><!--red_beg-->dotnet<!--red_end--></em> C# 全局 Windows 鼠标钩子

本文来告诉大家一个简单的方法实现全局的 鼠标钩子

实现封装方法十分简单，请看代码

   public class MouseHookEventArgs : EventArgs    {        public bool Handle { get; set; }
        /// <inheritdoc />        public MouseHookEventArgs(MouseMessages mouseMessage)        {            MouseMessage = mouseMessage;        }
        public MouseMessages MouseMessage { get; }
        public enum MouseMessages        {            MouseDown,            MouseMove,            MouseUp,        }    }
    /// <summary>    /// 鼠标钩子    /// </summary>    public static class MouseHook    {        private delegate IntPtr MouseProc(int nCode, IntPtr wParam, IntPtr lParam);        private static MouseProc _proc = HookCallback;        private static IntPtr _hookID = IntPtr.Zero;        private const int WH_MOUSE_LL = 14;
        private enum MouseMessages        {            WM_MOUSEMOVE = 0x0200        }
        [StructLayout(LayoutKind.Sequential)]        private struct POINT        {            public int x;            public int y;        }
        [StructLayout(LayoutKind.Sequential)]        private struct MSLLHOOKSTRUCT        {            private POINT pt;            private uint mouseData;            private uint flags;            private uint time;            private IntPtr dwExtraInfo;        }
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]        private static extern IntPtr SetWindowsHookEx(int idHook,            MouseProc lpfn, IntPtr hMod, uint dwThreadId);
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]        [return: MarshalAs(UnmanagedType.Bool)]        private static extern bool UnhookWindowsHookEx(IntPtr hhk);
        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]        private static extern IntPtr CallNextHookEx(IntPtr hhk, int nCode,            IntPtr wParam, IntPtr lParam);
        /// <summary>        /// 开启全局钩子        /// </summary>        /// <param name="moduleName"></param>        public static void Start(string moduleName)        {            Debug.WriteLine($"模块 {moduleName} 开启全局鼠标钩子");
            _hookID = SetHook(_proc);        }
        public static void Stop()        {            UnhookWindowsHookEx(_hookID);        }
        private static IntPtr SetHook(MouseProc proc)        {            using (Process curProcess = Process.GetCurrentProcess())            using (ProcessModule curModule = curProcess.MainModule)            {                return SetWindowsHookEx(WH_MOUSE_LL, proc,                    Kernel32.GetModuleHandle(curModule.ModuleName), 0);            }        }        private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)        {            if (nCode >= 0 )            {                MouseHookEventArgs mouseHookEventArgs = null;                switch ((WM) wParam)                {                    case WM.MOUSEMOVE:                        mouseHookEventArgs=(new MouseHookEventArgs(MouseHookEventArgs.MouseMessages.MouseMove));                        break;                    case WM.LBUTTONDOWN:                        mouseHookEventArgs=(new MouseHookEventArgs(MouseHookEventArgs.MouseMessages.MouseDown));                        break;                    case WM.LBUTTONUP:                        mouseHookEventArgs=(new MouseHookEventArgs(MouseHookEventArgs.MouseMessages.MouseUp));                        break;                }                //MSLLHOOKSTRUCT hookStruct = (MSLLHOOKSTRUCT)Marshal.PtrToStructure(lParam, typeof(MSLLHOOKSTRUCT));
                if (mouseHookEventArgs != null)                {                    OnMouseEvent(mouseHookEventArgs);
                    if (mouseHookEventArgs.Handle)                    {                        return IntPtr.Zero;                    }                }
            }            return CallNextHookEx(_hookID, nCode, wParam, lParam);        }
        public static event EventHandler<MouseHookEventArgs> MouseEvent;
        private static void OnMouseEvent(MouseHookEventArgs e)        {            MouseEvent?.Invoke(null, e);        }    }

本文会经常更新，请阅读原文： https://blog.lindexi.com/post/dotnet-C-%E5%85%A8%E5%B1%80-Windows-%E9%BC%A0%E6%A0%87%E9%92%A9%E5%AD%90.html 

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