WPF NotifyIcon

--------------
CHG   Changed show/hide functionality in order to work better with showcase window (which is no longer the app's main window).

git-svn-id: https://svn.evolvesoftware.ch/repos/evolve.net/WPF/NotifyIcon@105 9f600761-6f11-4665-b6dc-0185e9171623

Source/Sample Project/Commands/HideSampleWindowCommand.cs

@@ -0,0 +1,27 @@
+using System.Windows;
+using System.Windows.Input;
+
+namespace Samples.Commands
+{
+  /// <summary>
+  /// Hides the main window.
+  /// </summary>
+  public class HideSampleWindowCommand : CommandBase<HideSampleWindowCommand>
+  {
+
+    public override void Execute(object parameter)
+    {
+      GetTaskbarWindow(parameter).Hide();
+      CommandManager.InvalidateRequerySuggested();
+    }
+
+
+    public override bool CanExecute(object parameter)
+    {
+      Window win = GetTaskbarWindow(parameter);
+      return win != null && win.IsVisible;
+    }
+
+
+  }
+}