Forcing JFrame to not resize after setResizable(false). Command wont work

Question

I have a simple Atari breakout program, and long story short, one of my powerups is to allow the user to resize the window for a few seconds, then make the window non-resizable

Answer 1

Well one way I could think of is setting the size back after a resizing event if the frame is not resizable.

Not sure how well it would work though.

frame.addComponentListener(new ComponentAdapter() {
    @Override
    public void componentResized(ComponentEvent e) {
        if (!frame.isResizable()) {
            frame.setSize(...);
        }
    }
});

Answer 2

Have you tried revalidating the JFrame immediately after the power up ends? This will most likely solve your issue (though I wouldn't know given that you have neither an SSCCE, or an MVCE). I hope this helps, and best of luck.

Answer 3

Use Java's Robot class to force a mouse release. I've modified your example code below:

public static void main(String[] args) {        
  JFrame testFrame = new JFrame();
  testFrame.setResizable(true);
  testFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  Timer testTimer = new Timer(6000, new ActionListener() {
    @Override
    public void actionPerformed(ActionEvent e) {
            testFrame.setResizable(false);
      Robot r;
      try {
        r = new Robot();
        r.mouseRelease( InputEvent.BUTTON1_DOWN_MASK);
      } catch (AWTException ex) {
        ex.printStackTrace();
      }
    }

  });
  testFrame.setVisible(true);
  testTimer.start();
}