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POFire mouse event on underlying components
 

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    <p>I'm looking for a way to pass mouse events to components covered by other components. To illustrate what I mean, here's a sample code. It contains two <em>JLabel</em>s, one is twice smaller and entirely covered with a bigger label. If you mouse over the labels, only the bigger one fires <em>mouseEntered</em> event however.</p> <pre><code>import java.awt.Color; import java.awt.event.MouseAdapter; import java.awt.event.MouseEvent; import javax.swing.JFrame; import javax.swing.JLabel; import javax.swing.WindowConstants; import javax.swing.border.LineBorder; public class MouseEvtTest extends JFrame { public MouseEvtTest() { setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); setLayout(null); setSize(250, 250); MouseAdapter listener = new MouseAdapter() { @Override public void mouseEntered(MouseEvent e) { System.out.printf("Mouse entered %s label%n", e.getComponent().getName()); } }; LineBorder border = new LineBorder(Color.BLACK); JLabel smallLabel = new JLabel(); smallLabel.setName("small"); smallLabel.setSize(100, 100); smallLabel.setBorder(border); smallLabel.addMouseListener(listener); add(smallLabel); JLabel bigLabel = new JLabel(); bigLabel.setName("big"); bigLabel.setBorder(border); bigLabel.setSize(200, 200); bigLabel.addMouseListener(listener); add(bigLabel, 0); //Add to the front } public static void main(String[] args) { new MouseEvtTest().setVisible(true); } } </code></pre> <p>What would be the best way to fire mouse entered event on the smaller label when cursor is moved to the coordinates above it? How would it work in case where there would be multiple components stacked on top of each other? What about the remaining mouse events, like <em>mouseClicked</em>, <em>mousePressed</em>, <em>mouseReleased</em>, etc.?</p>
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    1. USEmilis Panovas
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    1. COI'm sorry, but I just have to ask - why would you want to do this? It does not seem like a very intuitive thing to do, and that usually means a maintenance problem.
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      1. USNemi
    2. COThis is just a sample code. The real deal has an invisible panel over a collection of other components. The panel at the top performs various tasks based on different conditions. For example if shift is held then you can grab and move the whole component with the components beneath. Since it would be difficult (and irrelevant) to explain all the details of the real life scenario, I figured this illustrates the problem rather well. In addition, this might not be the best way to do it, but I don't have the possibility to rewrite the component (mainly because of the time).
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