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POCreating glasspane
 

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    <p>I have a question. Can I create glasspane in body MousePressed ? If yes anyone can write me how? I mean that I press mouse button and glass pane is visible and I can painting on him.</p> <p>EDIT</p> <p>Ok I have now what I want. My glass pane is creating when I click mouse button and disapear when I release this button. Now I have another question. Where I should create my painting method. I want draw rectangle on this glasss pane using mouse dragged. Where I must implement paint method? In other class or in this events? I implement one my try paint function but I don't know if this is good way. This is my code:</p> <pre><code>public class Selection extends JPanel { static Point startPoint; public static void GUI() { final JFrame frame = new JFrame(); JPanel panel = new JPanel(); JButton button = new JButton("Select"); final JPanel glassPane = new JPanel(); frame.setSize(400, 300); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); panel.add(button); glassPane.setOpaque(false); frame.add(panel); frame.setGlassPane(glassPane); glassPane.addMouseListener(new MouseAdapter() { @Override public void mousePressed(MouseEvent e) { super.mousePressed(e); System.out.println("f.getGlassPane() mousePressed"); if(e.getButton() == MouseEvent.BUTTON1) frame.getGlassPane().setVisible(true); startPoint=e.getPoint(); Graphics2D g = null; Graphics2D g2 = (Graphics2D) g; Rectangle2D rect = new Rectangle2D.Double(); rect.setFrameFromDiagonal(e.getPoint().x, e.getPoint().y,startPoint.x, startPoint.y); g2.setComposite(AlphaComposite.getInstance(AlphaComposite.SRC_OVER, 0.5F)); g2.setColor(Color.BLUE); g2.fill(rect); g2.draw(rect); } }); glassPane.addMouseMotionListener(new MouseMotionListener() { @Override public void mouseDragged(MouseEvent e) { } @Override public void mouseMoved(MouseEvent e) { // TODO Auto-generated method stub } }); frame.addMouseListener(new MouseAdapter() { @Override public void mousePressed(MouseEvent e) { super.mousePressed(e); if(e.getButton() == MouseEvent.BUTTON1) frame.getGlassPane().setVisible(true); } public void mouseReleased(MouseEvent e) { frame.getGlassPane().setVisible(false); } }); frame.setVisible(true); } int x1, x2, y1,y2; public void paintComponent(Graphics g) { Graphics2D g2 = (Graphics2D)g; g2.drawRect(x1,y1, x2, y2); } public static void main(String[] args) { GUI(); } } </code></pre>
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    1. COHave you tried before asking?
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    2. COyes, I think that I must create method with methods where I will implements painting methods and in frame I should create glass pane and add mouse listeners. That is good way?
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    3. COsee my answer below. NJormally you would: create your frame, add content (normal content: labels, text fields...) to it, set a glass pane and attache a MouseListener.
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