using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Windows.Forms;

using System.Runtime.InteropServices;

namespace GameLoop

{

    [StructLayout(LayoutKind.Sequential)]

    public struct Message

    {

        public IntPtr hWnd;

        public Int32 msg;

        public IntPtr wParam;

        public IntPtr lParam;

        public uint time;

        public System.Drawing.Point p;

    }

    public class FastLoop

    {

        [System.Security.SuppressUnmanagedCodeSecurity]

        [DllImport("User32.dll", CharSet = CharSet.Auto)]

        public static extern bool PeekMessage(

            out Message msg,

            IntPtr hWnd,

            uint messageFilterMin,

            uint messageFilterMax,

            uint flags);

        PreciseTimer _timer = new PreciseTimer();

        public delegate void LoopCallback();

        LoopCallback _callback;

        public FastLoop(LoopCallback callback)

        {

            _callback = callback;

            Application.Idle += new EventHandler(OnApplicationEnterIdle);

        }

        void OnApplicationEnterIdle(object sender, EventArgs e)

        {

            while (IsAppStillIdle())

            {

                _callback();

            }

        }

        private bool IsAppStillIdle()

        {

            Message msg;

            return !PeekMessage(out msg, IntPtr.Zero, , , );

        }

    }

}