4 files changed, 36 insertions, 3 deletions
diff --git a/src/GraphicObjects/GraphicObject.cs b/src/GraphicObjects/GraphicObject.cs
index 98b52b0d..f8ffb511 100644
--- a/src/GraphicObjects/GraphicObject.cs
+++ b/src/GraphicObjects/GraphicObject.cs
@@ -295,12 +295,12 @@ namespace go
 			}
 		}
 		[XmlAttributeAttribute()][DefaultValue("0;0")]
-		public Size MaximumSize {
+		public virtual Size MaximumSize {
 			get { return _maximumSize; }
 			set { _maximumSize = value; }
 		}
 		[XmlAttributeAttribute()][DefaultValue("0;0")]
-		public Size MinimumSize {
+		public virtual Size MinimumSize {
 			get { return _minimumSize; }
 			set { _minimumSize = value; }
 		}
diff --git a/src/GraphicObjects/ListBox.cs b/src/GraphicObjects/ListBox.cs
index ea7f9ec5..6267ca92 100644
--- a/src/GraphicObjects/ListBox.cs
+++ b/src/GraphicObjects/ListBox.cs
@@ -72,6 +72,7 @@ namespace go
 				data = value;
 
 				_list.Children.Clear ();
+				_list.registerForGraphicUpdate ();
 				if (data == null)
 					return;
 
diff --git a/src/GraphicObjects/MessageBox.cs b/src/GraphicObjects/MessageBox.cs
new file mode 100644
index 00000000..a5ce6910
--- /dev/null
+++ b/src/GraphicObjects/MessageBox.cs
@@ -0,0 +1,32 @@
+//
+//  MessageBox.cs
+//
+//  Author:
+//       Jean-Philippe Bruyère <jp.bruyere@hotmail.com>
+//
+//  Copyright (c) 2015 jp
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <http://www.gnu.org/licenses/>.
+using System;
+
+namespace go
+{
+	public class MessageBox
+	{
+		public MessageBox ()
+		{
+		}
+	}
+}
+
diff --git a/src/GraphicObjects/Window.cs b/src/GraphicObjects/Window.cs
index 09488499..8355ff15 100644
--- a/src/GraphicObjects/Window.cs
+++ b/src/GraphicObjects/Window.cs
@@ -174,7 +174,7 @@ namespace go
 			_icon = this.child.FindByName ("Icon") as Image;
 		}
 
-		void butQuitPress (object sender, MouseButtonEventArgs e)
+		protected void butQuitPress (object sender, MouseButtonEventArgs e)
 		{
 			ILayoutable parent = (sender as GraphicObject).Parent;
 			while(!(parent is Window))