Java Swing - Defining a empty panel for a SplitPane

[supertreta]

Hi again,

I have the next components created on a JFrame:



The code used to instantiate this frame is:

public MyFrame(){           
    _mainPanel = new MyMainPanel();
    _mainPanel.setTransferHandler(_fileDropHandler);        

    initButtonsPanel();     

    _ListPanel = new MySideListPanel();
    _ListPanel.setMinimumSize(new Dimension(NOW_PLAYLING_LIST_MIN_WIDTH, 100));

    javax.swing.JPanel emptyPanel = new javax.swing.JPanel();
    emptyPanel.setOpaque(false);

    _splitPane = new JSplitPane(JSplitPane.HORIZONTAL_SPLIT, emptyPanel, _ListPanel);
    _splitPane.setOpaque(false);
    _splitPane.setOneTouchExpandable(true);
    _splitPane.setDividerSize(0);
    _splitPane.setResizeWeight(1.0);
    _splitPane.setOpaque(false);

    _mainPanel.setLayout(new BorderLayout());
    _mainPanel.add(_buttonsPanel, BorderLayout.SOUTH);
    _mainPanel.add(_splitPane, BorderLayout.CENTER);
    getContentPane().add(_mainPanel);
    }

As I defined, the emptyPanel is not opaque and I can see the mainPanel's components. However, I can not interact with them.

This doesn't happen with the buttonsPanel, where I can see and interact with the mainPanel's components between the buttons.

I think the problem is because I don't add the emptyPanel directly over the mainPanel. I add the SplitPane, which contains the emptyPanel.

What should I do?

Thanks in advance,
st

[camickr]

I would guess that opaqeness is only for painting.

Just because a component is transparent doesn't mean the component isn't there. So when you click in the area I would guess the split pane still receives the mouse event.

I'm not sure why you would design a form like this.

For a possible solution see: How to Use Root Panes (The Java™ Tutorials > Creating a GUI With JFC/Swing > Using Swing Components). The Glass Pane example shows how to forward events to components hidden under the glass pane.