Индикация смены раскладки клавиатуры в виде лампы с RGB-светодиодом для Gnome

да писала нейронка, но работает безотказно, вроде как последняя версия (если не ошибся с файлом), а затем для exe делаем автозапуск от админа и работает везде (во всех окнах и приложениях)

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

class Program
{
    private const int WH_KEYBOARD_LL = 13;
    private const int WM_KEYDOWN = 0x0100;
    private const int VK_CAPITAL = 0x14;

    private static LowLevelKeyboardProc _proc = HookCallback;
    private static IntPtr _hookID = IntPtr.Zero;

    static void Main()
    {
        TurnOffCapsLock();

        _hookID = SetHook(_proc);

        MSG msg;
        while (GetMessage(out msg, IntPtr.Zero, 0, 0))
        {
            TranslateMessage(ref msg);
            DispatchMessage(ref msg);
        }

        UnhookWindowsHookEx(_hookID);
    }

    private static IntPtr HookCallback(int nCode, IntPtr wParam, IntPtr lParam)
    {
        if (nCode >= 0 && wParam == (IntPtr)WM_KEYDOWN)
        {
            int vkCode = Marshal.ReadInt32(lParam);

            if (vkCode == VK_CAPITAL)
            {
                SendAltShift();
                return (IntPtr)1;
            }
        }
        return CallNextHookEx(_hookID, nCode, wParam, lParam);
    }

    private static void SendAltShift()
    {
        keybd_event(0x12, 0, 0, 0);
        keybd_event(0x10, 0, 0, 0);
        keybd_event(0x10, 0, 0x0002, 0);
        keybd_event(0x12, 0, 0x0002, 0);
    }

    private static void TurnOffCapsLock()
    {
        if ((GetKeyState(VK_CAPITAL) & 0x0001) != 0)
        {
            keybd_event(VK_CAPITAL, 0x45, 0, 0);
            keybd_event(VK_CAPITAL, 0x45, 0x0002, 0);
        }
    }

    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 delegate IntPtr LowLevelKeyboardProc(int nCode, IntPtr wParam, IntPtr 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("user32.dll")]
    static extern bool GetMessage(out MSG lpMsg, IntPtr hWnd, uint wMsgFilterMin, uint wMsgFilterMax);

    [DllImport("user32.dll")]
    static extern bool TranslateMessage([In] ref MSG lpMsg);

    [DllImport("user32.dll")]
    static extern IntPtr DispatchMessage([In] ref MSG lpMsg);

    [DllImport("user32.dll")]
    static extern void keybd_event(byte bVk, byte bScan, uint dwFlags, int dwExtraInfo);

    [DllImport("user32.dll")]
    static extern short GetKeyState(int nVirtKey);

    [StructLayout(LayoutKind.Sequential)]
    public struct MSG
    {
        public IntPtr hwnd;
        public uint message;
        public IntPtr wParam;
        public IntPtr lParam;
        public uint time;
        public Point pt;
    }

    [StructLayout(LayoutKind.Sequential)]
    public struct Point
    {
        public int x;
        public int y;
    }
}