dotnet C# 全局 Windows 鼠标钩子

llovebo

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2021-09-06 09:30

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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