using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Runtime.InteropServices;
 
namespace ConsoleApplication2
{
    class Program
    {
 
        [DllImport("user32.dll", CharSet = CharSet.Auto)]
        public static extern IntPtr FindWindow(string lpClassName, string lpWindowName);
 
        [DllImport("user32.dll", EntryPoint = "GetDC")]
        public static extern IntPtr GetDC(IntPtr ptr);
 
        static void Main(string[] args)
        {
 
            IntPtr nWnd = FindWindow("","DutchLeader - Uitnodigingen - Windows Internet Explorer");
            if (nWnd != IntPtr.Zero)
            {
                IntPtr dcWindow = GetDC(nWnd);
                //Here should come the code to get the coordinates from the color pixel
            }
            else
            {
                Console.WriteLine("Window niet gevonden");
            }
        }
    }
}