private void AccuracyTest(object sender, RoutedEventArgs e) { accuracyTest = new AccuracyTest(); trackerController.tracker.GazeData += accuracyTest.EyeTrackerGazeData; trackerController.tracker.EyeTrackerError += accuracyTest.EyeTrackerError; accuracyTest.Closed += accuracyTest_Closed; accuracyTest.Start(); }