如何在java中更改鼠标光标？ [英] How to change the mouse cursor in java?

问题描述

我在JList中有一个单词列表。每当我将鼠标光标指向一个单词时，我希望光标变为手形光标。现在我的问题是如何做到这一点？

I have a list of words inside the JList. Every time I point the mouse cursor at a word, I want the cursor to change into a hand cursor. Now my problem is how to do that?

有人可以帮我解决这个问题吗？

Could someone help me with this problem?

推荐答案

在JList上使用 MouseMotionListener 检测鼠标何时进入，然后调用 setCursor 将其转换为 HAND_CURSOR 。

Use a MouseMotionListener on your JList to detect when the mouse enters it and then call setCursor to convert it into a HAND_CURSOR.

示例代码：

final JList list = new JList(new String[] {"a","b","c"});
list.addMouseMotionListener(new MouseMotionListener() {
    @Override
    public void mouseMoved(MouseEvent e) {
        final int x = e.getX();
        final int y = e.getY();
        // only display a hand if the cursor is over the items
        final Rectangle cellBounds = list.getCellBounds(0, list.getModel().getSize() - 1);
        if (cellBounds != null && cellBounds.contains(x, y)) {
            list.setCursor(new Cursor(Cursor.HAND_CURSOR));
        } else {
            list.setCursor(new Cursor(Cursor.DEFAULT_CURSOR));
        }
    }

    @Override
    public void mouseDragged(MouseEvent e) {
    }
});

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