背景显示方法.doc

import java.awt.event.*; import javax.swing.*; import java.awt.*; public class BackgroundImage extends JFrame { JScrollPane scrollPane; ImageIcon icon; Image image; public BackgroundImage() { icon = new ImageIcon(bgpanel.jpg); JPanel panel = new JPanel() { protected void paintComponent(Graphics g) { // Dispaly image at at full size g.drawImage(icon.getImage(), 0, 0, null); // Scale image to size of component // Dimension d = getSize(); // g.drawImage(icon.getImage(), 0, 0, d.width, d.height, null); // Fix the image position in the scroll pane // Point p = scrollPane.getViewport().getViewPosition(); // g.drawImage(icon.getImage(), p.x, p.y, null); super.paintComponent(g); } }; panel.setOpaque( false ); panel.setPreferredSize( new Dimension(400, 400) ); scrollPane = new JScrollPane( panel ); getContentPane().add( scrollPane ); JButton button = new JButton( Hello ); panel.add( button ); } public static void main(String [] args) { BackgroundImage frame = new BackgroundImage(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setSize(300, 300); frame.setLocationRelativeTo( null ); frame.setVisible(true); } } mport java.awt.Graphics; import javax.swing.ImageIcon; import javax.swing.JFrame; import javax.swing.JScrollPane; import javax.swing.JTextArea; /** * 在JTextArea中显示一个图片背景（背景随滚动而移动位置） * * @author 五斗米 如转载请保留作者和出处 * @blog /mq612 */ public class Test extends JFrame { private static final long serialVersionUID = 4785452373598819719L; private JScrollPane sp = null; private JTextArea text = null; private ImageIcon imageIcon = null; public Test() { super(JTextArea); imageIcon = new ImageIcon(photo.jp