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javaswingjpaneltransparency

Preventing components below panel to get hovered when panel is transparent

I have a JPanel, set to be transparent:

public SomePanel() {
    setOpaque(false);
    [...]
}

I have other JComponent instances under it (at the same location, but below it).

If I draw on the panel using paintComponent(g), putting my mouse on the panel still triggers mouseEntered and mouseExited events for other components below it.

How can I prevent components below the panel to fire mouse events if the non-opaque panel is visible? I am using setOpaque(false) because I need a transparent background, perhaps there is another way to achieve this?

Solution

  • One possible solution: give the covering JPanel its own MouseListener, one that is there to simply swallow the mouse events and prevent them from being transmitted. The code could be as simple as:

    myPanel.addMouseListener(new MouseAdapter() {});