private void OpenKerkythea_Click(object sender, RoutedEventArgs e) { Cursor = Cursors.Wait; var input = "kerkytheatest.xml"; var output = "kerkytheatest.png"; Viewport3DHelper.Export(view1.Viewport, input); var ktl = new KerkytheaLauncher { InputFile = input, OutputFile = output }; var p = ktl.Start(); p.WaitForExit(); Process.Start(output); Cursor = Cursors.Arrow; }