Method windowClosing

app/src/processing/app/ui/ColorChooser.java:105–107

(WindowEvent e)

    window.setDefaultCloseOperation(WindowConstants.DO_NOTHING_ON_CLOSE);
    window.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
          hide();
        }
      });
    Toolkit.registerWindowCloseKeys(window.getRootPane(), actionEvent -> hide());
    Toolkit.setIcon(window);