[Mono-list] problems with Wnck-sharp

[leonel.florin at cfg.jovenclub.cu]

Hi everyone:

I'm using the Wnck library in a program of monitoring, to extract the opened windows
on the Gnome desktop, the goals of this programs is to control the application that
my students open in the computer class.

I obtain the opened window with this example

using Wnck;
using Gdk;
using System.Diagnostics;
using System.IO;
using System.Threading;

namespace GetWindowsListFromC
{
	class MainClass
	{
		public static void Main (string[] args)
		{
			Gdk.Global.InitCheck (ref args);
			Wnck.Screen.Default.ForceUpdate ();

			Wnck.Screen.Default.ForceUpdate ();

                         while (true) {

				foreach (Wnck.Window item in Wnck.Screen.Default.Windows) {
					Console.WriteLine ("Window Name = " + item.Application.Name);
				}

				Wnck.Screen.Default.ForceUpdate ();
				Thread.Sleep (2000);
			}
		}
	}
}

all this work good, but, when pass tow second I retrieved the same list of opened
windows even if open an other windows or close one of the previews opened windows.

Is anyone knows work with Wnck-sharp and could help me, please I will wait.