public ParticleEditor() { super("Particle Editor"); lwjglCanvas = new LwjglCanvas(new Renderer(), false); addWindowListener( new WindowAdapter() { public void windowClosed(WindowEvent event) { System.exit(0); // Gdx.app.quit(); } }); initializeComponents(); setSize(1000, 950); setLocationRelativeTo(null); setDefaultCloseOperation(DISPOSE_ON_CLOSE); setVisible(true); }