您的直接问题是，您正在混合重量级/ AWT组件和重量轻/ Swing组件…
Button是本地组件，这意味着它的绘画超出了Swing的控制范围，因此不受其影响。
而是使用
JButton代替。
public class TestJLayerZoom { public static void main(String args[]) { EventQueue.invokeLater(new Runnable() { @Override public void run() { Jframe frame = new Jframe(); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); final JPanel panel = new JPanel(); final ZoomUI layerUI = new ZoomUI(); final JLayer<JComponent> jLayer = new JLayer<JComponent>(panel, layerUI); JButton zoomIn = new JButton("Zoom In"); zoomIn.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { layerUI.zoom += 0.1; jLayer.repaint(); } }); panel.add(zoomIn); JButton zoomOut = new JButton("Zoom Out"); zoomOut.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { layerUI.zoom -= 0.1; jLayer.repaint(); } }); panel.add(zoomOut); frame.setPreferredSize(new Dimension(400, 200)); frame.add(jLayer); frame.pack(); frame.setVisible(true); } }); } private static class ZoomUI extends LayerUI<JComponent> { public double zoom = 2; // Changing this value seems to have no effect @Override public void paint(Graphics g, JComponent c) { Graphics2D g2 = (Graphics2D) g.create(); g2.scale(zoom, zoom); super.paint(g2, c); g2.dispose(); } @Override public void installUI(JComponent c) { super.installUI(c); JLayer jlayer = (JLayer) c; jlayer.setLayerEventMask( AWTEvent.MOUSE_EVENT_MASK | AWTEvent.ACTION_EVENT_MASK | AWTEvent.MOUSE_MOTION_EVENT_MASK ); } @Override public void uninstallUI(JComponent c) { JLayer jlayer = (JLayer) c; jlayer.setLayerEventMask(0); super.uninstallUI(c); } }}您的下一个问题将是研究如何转换鼠标事件;）
