Threads oriented gui and concept of programm. Small example.

ThreadsAndGui.cs

using System;
using System.Threading;
using Gtk;

namespace koncept
{
	public static class MainClass
	{
		/* locks */
		public static object lockEnd;
		public static object lockM;
		
		/* data exchange */
		public static bool end;
		public static string message;
		
		/* threads */
		static Thread t2;
		
		public static void Main ()
		{
			end = false;
			message = "Ahoj světě! Napiště něco!";
			lockEnd = new object();
			lockM = new object();
			t2 = new Thread( Logic.run );
			/* run */
			t2.Start();
			Design.run();
			t2.Join();
			/*  */
		}
	}
	
	public static class Logic
	{
		
		private static string mes;
		
		public static void run() {
			Console.WriteLine("Napište:");
			while(true) {
				lock( MainClass.lockEnd ) {
					if( MainClass.end ) break;	
				}
				mes = Console.ReadLine();	
				Console.WriteLine("Přečetl jsem: {0}", mes);
				if( mes == "end" ) break;
				if( mes != "" ) Gtk.Application.Invoke( DoRefresh );
				Thread.Sleep( 500 );
			}
			
			/* ending sequence */
			Gtk.Application.Invoke( DoExit	);
			
			Console.WriteLine("Ukončuji tento thread.");
		}
		
		private static void DoExit(object sender, EventArgs e) {
			lock( MainClass.lockEnd ) {
				MainClass.end = true;	
			}	
		}
		
		private static void DoRefresh(object sender, EventArgs e) {
			lock ( MainClass.lockM ) {
				MainClass.message = mes;	
			}
		}
	}
	
	public static class Design
	{
		static AppWin aw;
		
		public static void run() {
			Gtk.Application.Init();
			aw = new AppWin();
			aw.Show();
			while( Gtk.Application.EventsPending() ) {	
				Gdk.Threads.Enter ();
				Gtk.Application.RunIteration();
				aw.Change( MainClass.message );
				Gdk.Threads.Leave ();
				lock( MainClass.lockEnd) {
					if( MainClass.end ) break;
				}
			}
		}
		

	}
	
	public class AppWin : Gtk.Window
	{
		Label l;
		
		public AppWin() : base( WindowType.Toplevel ) {
			this.DefaultWidth = 200;
			this.DefaultHeight = 100;
			this.l = new Label("Piš!");
			this.Add( l );
			this.ShowAll();
			this.DeleteEvent += OnDeleteEvent;
		}
		
		public void Change( string m ) {
			lock( MainClass.lockM ) {
				l.Text = m;	
			}
			l.ShowNow();
		}
		
		protected void OnDeleteEvent (object sender, DeleteEventArgs a) {
			((AppWin) sender).Hide();
			lock( MainClass.lockEnd ) {
				MainClass.end = true;
			}
			a.RetVal = true; 	
		} 
	}
}