HookMessage

using System;
using System.Collections.Generic;
using System.Text;
using System.Runtime.InteropServices;
using System.Windows.Forms;

internal class Win32
{
        [DllImport("user32.dll", SetLastError = true)]
                internal static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

}

public enum WinMsg
{
        WM_SETTEXT = 12
}


class spotify : Form
{
        public IntPtr getspotify()
        {
                return Win32.FindWindow("SpotifyMainWindow", null);

        }
}

class Exampleclass
{
        public static void Main()
        {
                spotify s = new spotify();
                IntPtr h = s.getspotify();
                System.Console.WriteLine("Hello world!");
                System.Console.WriteLine(h); // prints out 262990

        }
}