ACAT.Lib.Core.Utility.User32Interop.GetKeyState C# (CSharp) Метод

        public static extern short GetKeyState(int vKey);

 /// <summary>
 /// Is capslock engaged?
 /// </summary>
 /// <returns></returns>
 public static bool IsNumLockOn()
 {
     return(User32Interop.GetKeyState(VK_NUMLOCK) != 0);
 }