C#

using System;
using System.Runtime.InteropServices;
using System.Timers;

namespace LastInputTest
{
    class Program
    {
        static void Main(string[] args)
        {
            Console.WriteLine("Press Enter to exit!");
            using (Timer timer = new Timer(1000))
            {
                timer.AutoReset = true;
                timer.Elapsed += new ElapsedEventHandler(timer_Elapsed);
                timer.Start();
                while (Console.ReadKey().Key != ConsoleKey.Enter)
                {
                    Console.WriteLine();
                }
            }
        }

        static void timer_Elapsed(object sender, ElapsedEventArgs e)
        {
            LASTINPUTINFO lii = new LASTINPUTINFO();
            lii.cbSize = LASTINPUTINFO.Size;
            NativeMethods.GetLastInputInfo(ref lii);
            Console.WriteLine(lii.dwTime);
        }

    }

    internal static class NativeMethods
    {
        // http://msdn.microsoft.com/en-us/library/ms646302(v=vs.85).aspx
        /*
BOOL WINAPI GetLastInputInfo(
  __out  PLASTINPUTINFO plii
);
         */
        [DllImport("User32.dll", SetLastError = true)]
        public static extern int GetLastInputInfo(ref LASTINPUTINFO lii);
    }

    // http://msdn.microsoft.com/en-us/library/ms646272(v=vs.85).aspx
    /*
typedef struct tagLASTINPUTINFO {
  UINT  cbSize;
  DWORD dwTime;
} LASTINPUTINFO, *PLASTINPUTINFO;
     */
    [StructLayout(LayoutKind.Sequential)]
    internal struct LASTINPUTINFO
    {
        public static readonly int Size = Marshal.SizeOf(typeof(LASTINPUTINFO));

        public int cbSize;
        public uint dwTime;
    }
}

prasadbuddhika wrote:

i have got some unicode values

String myText = System.Text.Encoding.Unicode.GetString(myBuffer);

I are Troll

Azad Giordano Ratzki wrote:

Be helpful or don't bother commenting.