Make app into a windows app.

And activate on show.

Perspex.Windows/Window.cs

@@ -109,7 +109,7 @@ namespace Perspex.Windows
 
         public void Show()
         {
-            UnmanagedMethods.ShowWindow(this.Handle, 4);
+            UnmanagedMethods.ShowWindow(this.Handle, 1);
         }
 
         protected override void OnPreviewKeyDown(KeyEventArgs e)

TestApplication/TestApplication.csproj

@@ -5,7 +5,7 @@
     <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
     <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
     <ProjectGuid>{E3A1060B-50D0-44E8-88B6-F44EF2E5BD72}</ProjectGuid>
-    <OutputType>Exe</OutputType>
+    <OutputType>WinExe</OutputType>
     <AppDesignerFolder>Properties</AppDesignerFolder>
     <RootNamespace>TestApplication</RootNamespace>
     <AssemblyName>TestApplication</AssemblyName>