dotnet C# 全局 Windows 鼠标钩子

dotnet 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publicclassMouseHookEventArgs:EventArgs{publicboolHandle{get;set;}///<inheritdoc/>publicMouseHookEve…

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);
        }
    }

 

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