Initial commit

TestWindow/App.xaml.cs

@@ -0,0 +1,24 @@
+using System.Collections.Generic;
+using System.Windows;
+
+namespace TestWindow
+{
+    public partial class App
+    {
+        private List<WindowSource> _windowSourceList;
+
+        protected override void OnStartup(StartupEventArgs e)
+        {
+            base.OnStartup(e);
+
+            _windowSourceList = new List<WindowSource> { new WindowSource(), new WindowSource(), new WindowSource() };
+        }
+
+        protected override void OnExit(ExitEventArgs e)
+        {
+            _windowSourceList.ForEach(ws => ws.Dispose());
+
+            base.OnExit(e);
+        }
+    }
+}