JScrollPane in JScrollPane

问题

I have a JScrollPane, which has a JPanel for its content pane. To that JPanel I add smaller JPanels, and as expected, if I add too much JPanel, a vertical scrollbar will appear.

The problem is, that my small JPanels contains a JScrollPane too for a JEditorPane. I'd like to use the mouse wheel only for the outer scrollpane, not for the smaller scrollpane. I already set wheelScrollingEnabled() to false for the small scrollpane, but if I scroll in any direction, and the mouse gets over the JEditorPane, the scrolling doesn't work anymore.

Any advice?

回答1:

You may try to forward the wheel events from the inner scroll pane to its parent.

innerScrollPane.addMouseWheelListener(new MouseWheelListener() {

    @Override
    public void mouseWheelMoved(MouseWheelEvent e) {
        innerScrollPane.getParent().dispatchEvent(e);
    }
});

回答2:

Add a MouseWheelListener to your JScrollPane and when handling an event, pass it to the main JScrollPane by invoking its dispatchEvent(AWTEvent) method;

来源：https://stackoverflow.com/questions/8729629/jscrollpane-in-jscrollpane