Question

我正在为我的应用程序创建一个AFKChecker。问题是低级别的鼠标钩子没有被调用。我检查过它是否返回0并不是。所以键盘钩子工作但不是鼠标钩子。我用谷歌搜索了，但我还没有找到解决问题的方法。

using System;
using System.Diagnostics;
using System.Runtime.InteropServices;

namespace AFKChecker
{
    public static class ActivityChecker
    {
        public static Int64 LastKeypress = 0;
        public static int AFKTime = 300;

        private const int WH_KEYBOARD_LL = 13;
        public const int WH_MOUSE_LL = 14;
        private static HookProc _keyproc = HookCallback;
        private static IntPtr _keyhookID = IntPtr.Zero;
        private static HookProc _mouseproc = HookCallback;
        private static IntPtr _mousehookID = IntPtr.Zero;

        public static void AddHook()
        {
            LastKeypress = Tools.UnixTime();
            _keyhookID = SetKeyboardHook(_keyproc);
            _mousehookID = SetKeyboardHook(_mouseproc);
        }

        private static IntPtr HookCallback(
        int nCode, IntPtr wParam, IntPtr lParam)
        {
            LastKeypress = Tools.UnixTime();
            return CallNextHookEx(_keyhookID, nCode, wParam, lParam);
        }

        public static void RemoveHook()
        {
            UnhookWindowsHookEx(_keyhookID);
            UnhookWindowsHookEx(_mousehookID);
        }

        public static Boolean IsAFK()
        {
            return (LastKeypress + AFKTime > Tools.UnixTime());
        }

        private static IntPtr SetKeyboardHook(HookProc proc)
        {
            using (Process curProcess = Process.GetCurrentProcess())
            using (ProcessModule curModule = curProcess.MainModule)
            {
                return SetWindowsHookEx(WH_KEYBOARD_LL, proc,
                    GetModuleHandle(curModule.ModuleName), 0);
            }
        }

        private static IntPtr SetMouseHook(HookProc proc)
        {
            using (Process curProcess = Process.GetCurrentProcess())
            using (ProcessModule curModule = curProcess.MainModule)
            {
                return SetWindowsHookEx(WH_MOUSE_LL, proc,
                    GetModuleHandle(curModule.ModuleName), 0);
            }
        }

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

        [DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr SetWindowsHookEx(int idHook,
            HookProc 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);

        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        private static extern IntPtr GetModuleHandle(string lpModuleName);
    }
}

祝你好运

Answer 1

安装鼠标/键盘钩只是为了找到用户的空闲时间，这在概念上是错误的。如果Windows不提供更好的API，这应该是最后的选择。

quick search显示为此目的而设计的GetLastInputInfo API。以及一个代码项目文章，描述了如何在C＃中执行此操作：Getting the user idle time with C#

Answer 2

您似乎没有致电SetMouseHook，请重新检查您的AddHook()功能：

    public static void AddHook()
    {
        LastKeypress = Tools.UnixTime();
        _keyhookID = SetKeyboardHook(_keyproc);
        _mousehookID = SetKeyboardHook(_mouseproc); // SetMouseHook() here?
    }

WH_MOUSE_LL挂钩不会被调用

2 个答案: