using System;
using System.Drawing;
using System.Media;
using System.Runtime.InteropServices;
using System.Threading;

sealed class Win32
{
    // Source: https://stackoverflow.com/questions/753132/how-to-get-the-colour-of-a-pixel-at-x-y-using-c/753157#753157
    [DllImport("user32.dll")]
    static extern IntPtr GetDC(IntPtr hwnd);

    [DllImport("user32.dll")]
    static extern Int32 ReleaseDC(IntPtr hwnd, IntPtr hdc);

    [DllImport("gdi32.dll")]
    static extern uint GetPixel(IntPtr hdc, int nXPos, int nYPos);

    static public System.Drawing.Color GetPixelColor(int x, int y)
    {
        IntPtr hdc = GetDC(IntPtr.Zero);
        uint pixel = GetPixel(hdc, x, y);
        ReleaseDC(IntPtr.Zero, hdc);
        Color color = Color.FromArgb((int)(pixel & 0x000000FF),
                     (int)(pixel & 0x0000FF00) >> 8,
                     (int)(pixel & 0x00FF0000) >> 16);
        return color;
    }

    // Main Method
    static public void Main(String[] args)
    {
        Int32 x = 740;
        Int32 y = 560;
        // System.Windows.Forms.Cursor.Position = new Point(x, y);

        Color oldColor = GetPixelColor(x, y);
        Color newColor;
        while (true) {
            newColor = GetPixelColor(x, y);
            Console.WriteLine(newColor);
            if (newColor.ToArgb() != oldColor.ToArgb())
            {
                break;
            }
            oldColor = newColor;
            Thread.Sleep(1000);
        }
        using (var soundPlayer = new SoundPlayer(@"c:\Windows\Media\tada.wav"))
        {
            Console.WriteLine("WEEEEUUUUWEEEEEUUUU");
            while (true)
            {
                soundPlayer.Play();
                Thread.Sleep(1000);
            }
        }
    }
}