Cleanup

WGneu/App.xaml.cs

@@ -18,20 +18,22 @@ namespace WGneu {
             MainDispatcher = Dispatcher;
         }
 
-        public void App_Startup(object sender, EventArgs e) {
+        protected override void OnStartup(StartupEventArgs e) {
             Task.Run(() => Documents.Html.Init(PrintingReadyChanged));
             Task.Run(() => Documents.Pdf.Init(PrintingReadyChanged));
+            base.OnStartup(e);
         }
 
-        public void App_Exit(object sender, EventArgs e) {
+        protected override void OnExit(ExitEventArgs e) {
             Task.Run(() => Documents.Pdf.Close());
+            base.OnExit(e);
         }
 
         private void PrintingReadyChanged() {
-            Dispatcher.BeginInvoke(App_PrintingReadyChanged, this, new EventArgs());
+            Dispatcher.BeginInvoke(OnPrintingReadyChanged, new EventArgs());
         }
 
-        private void App_PrintingReadyChanged(object sender, EventArgs e) {
+        protected void OnPrintingReadyChanged(EventArgs e) {
             foreach (Window w in Windows) {
                 foreach (var b in Utils.FindVisualChilds<Button>(w).Where(b => "Print".Equals(b.Tag))) {
                     b.IsEnabled = IsPrintingReady;