java - 如何更改鼠标悬停时的图标？

Question

我有白色图标，当我经过该图标时我想制作不同的颜色。

这是我的白色图标:

hint.setIcon(newjavax.swing.ImageIcon(getClass().getResource ("white.png")));

如何使鼠标拖动到图标上时改变颜色？

Answer 1

我怀疑这个问题的答案是在一个未修饰的按钮中。将白色图像设置为图标，将黄色图像设置为 roll-over icon 。像这样:

import java.awt.*;
import javax.swing.*;
import java.net.URL;
import javax.imageio.ImageIO;

class HoverImage {

    HoverImage(Image img1, Image img2) {
        JButton b = new JButton(new ImageIcon(img1));
        b.setRolloverIcon(new ImageIcon(img2));

        b.setBorderPainted(false);
        b.setContentAreaFilled(false);

        JOptionPane.showMessageDialog(null, b);
    }

    public static void main(String[] args) throws Exception {
        URL url1 = new URL("/image/XZ4V5.jpg");
        URL url2 = new URL("/image/7bI1Y.jpg");
        final Image img1 = ImageIO.read(url1);
        final Image img2 = ImageIO.read(url2);
        //Create the frame on the event dispatching thread
        SwingUtilities.invokeLater(new Runnable(){
            @Override
            public void run() {
                new HoverImage(img1, img2);
            }
        });
    }
}