WPF NotifyIcon

--------------
FIX   Removed debug output in WindowMessageSink.
CHG   Major rework on sample project.

git-svn-id: https://svn.evolvesoftware.ch/repos/evolve.net/WPF/NotifyIcon@104 9f600761-6f11-4665-b6dc-0185e9171623

Source/Sample Project/Tutorials/06 - Commands/ShowMessageCommand.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Windows;
+using System.Windows.Input;
+
+namespace Samples.Tutorials.Commands
+{
+  /// <summary>
+  /// A simple command that displays the command parameter as
+  /// a dialog message.
+  /// </summary>
+  public class ShowMessageCommand : ICommand
+  {
+    public void Execute(object parameter)
+    {
+      MessageBox.Show(parameter.ToString());
+    }
+
+    public bool CanExecute(object parameter)
+    {
+      return true;
+    }
+
+    public event EventHandler CanExecuteChanged;
+  }
+}