Enable DevTools in XamlTestApplication.

XamlTestApplication/Views/MainWindow.cs

@@ -1,10 +1,15 @@
 namespace XamlTestApplication.Views
 {
     using OmniXaml.AppServices.Mvvm;
+    using Perspex.Diagnostics;
     using Perspex.Xaml.Desktop;
 
     [ViewToken("Main", typeof(MainWindow))]
     public class MainWindow : PerspexWindow
-    {         
+    {
+        public MainWindow()
+        {
+            DevTools.Attach(this);
+        }
     }
 }

XamlTestApplication/XamlTestApplication.csproj

@@ -149,6 +149,10 @@
       <Project>{d2221c82-4a25-4583-9b43-d791e3f6820c}</Project>
       <Name>Perspex.Controls</Name>
     </ProjectReference>
+    <ProjectReference Include="..\Perspex.Diagnostics\Perspex.Diagnostics.csproj">
+      <Project>{7062ae20-5dcc-4442-9645-8195bdece63e}</Project>
+      <Name>Perspex.Diagnostics</Name>
+    </ProjectReference>
     <ProjectReference Include="..\Perspex.Input\Perspex.Input.csproj">
       <Project>{62024b2d-53eb-4638-b26b-85eeaa54866e}</Project>
       <Name>Perspex.Input</Name>