Make app shutdown when main window closed.

Perspex.Windows/Window.cs

@@ -23,7 +23,7 @@ namespace Perspex.Windows
     using Perspex.Windows.Threading;
     using Splat;
 
-    public class Window : ContentControl, ILayoutRoot, IRendered
+    public class Window : ContentControl, ILayoutRoot, IRendered, ICloseable
     {
         private UnmanagedMethods.WndProc wndProcDelegate;
 
@@ -75,6 +75,8 @@ namespace Perspex.Windows
             });
         }
 
+        public event EventHandler Closed;
+
         public Size ClientSize
         {
             get
@@ -166,6 +168,14 @@ namespace Perspex.Windows
             }
         }
 
+        private void OnClosed()
+        {
+            if (this.Closed != null)
+            {
+                this.Closed(this, EventArgs.Empty);
+            }
+        }
+
         [SuppressMessage("Microsoft.StyleCop.CSharp.NamingRules", "SA1305:FieldNamesMustNotUseHungarianNotation", Justification = "Using Win32 naming for consistency.")]
         private IntPtr WndProc(IntPtr hWnd, uint msg, IntPtr wParam, IntPtr lParam)
         {
@@ -175,9 +185,9 @@ namespace Perspex.Windows
 
             switch ((UnmanagedMethods.WindowsMessage)msg)
             {
-                ////case UnmanagedMethods.WindowsMessage.WM_DESTROY:
-                ////    this.OnClosed();
-                ////    break;
+                case UnmanagedMethods.WindowsMessage.WM_DESTROY:
+                    this.OnClosed();
+                    break;
 
                 case UnmanagedMethods.WindowsMessage.WM_KEYDOWN:
                     WindowsKeyboardDevice.Instance.UpdateKeyStates();

Perspex/Application.cs

@@ -6,9 +6,11 @@
 
 namespace Perspex
 {
+    using System.Threading;
     using Perspex.Controls;
     using Perspex.Input;
     using Perspex.Styling;
+    using Perspex.Threading;
     using Splat;
 
     public class Application
@@ -85,5 +87,12 @@ namespace Perspex
             Locator.CurrentMutable.Register(() => this.InputManager, typeof(IInputManager));
             Locator.CurrentMutable.Register(() => styler, typeof(IStyler));
         }
+
+        public void Run(ICloseable closable)
+        {
+            DispatcherFrame frame = new DispatcherFrame();
+            closable.Closed += (s, e) => frame.Continue = false;
+            Dispatcher.PushFrame(frame);
+        }
     }
 }

Perspex/ICloseable.cs

@@ -0,0 +1,15 @@
+// -----------------------------------------------------------------------
+// <copyright file="ICloseable.cs" company="Steven Kirk">
+// Copyright 2014 MIT Licence. See licence.md for more information.
+// </copyright>
+// -----------------------------------------------------------------------
+
+namespace Perspex
+{
+    using System;
+
+    public interface ICloseable
+    {
+        event EventHandler Closed;
+    }
+}

Perspex/Perspex.csproj

@@ -101,6 +101,7 @@
     <Compile Include="Controls\LogicalChildren.cs" />
     <Compile Include="Controls\Panel.cs" />
     <Compile Include="Controls\StackPanel.cs" />
+    <Compile Include="ICloseable.cs" />
     <Compile Include="IHeadered.cs" />
     <Compile Include="Diagnostics\Debug.cs" />
     <Compile Include="Input\InputElement.cs" />

TestApplication/Program.cs

@@ -234,7 +234,7 @@ namespace TestApplication
             };
 
             window.Show();
-            Dispatcher.Run();
+            Application.Current.Run(window);
         }
     }
 }