抱歉我吧整段code贴上来 我目前用java.awt 将图片load近来 我这段程式的功能是用滑鼠滚轮切换图片 目前已经可以做到侦测到滑鼠滚轮 切换图片的部分有个bug 就是我滑鼠假设我滚了一格 我设计上是要由example1.jpg 切换到 example2.jpg 但在视窗中(textArea)中图不会改变 不过如果移动视窗或是改变视窗大小 图就会变成我想要的(例：滑鼠滚轮动一格 图片不会变 但改变视窗大小後 图就变成example2.jpg了) 我在想说是不是我的Show_off_test中 改变图片时 没有办法及时flush?? 我用的OS是vista-32bit 会不会是OS的问题= =诡异的bug 大家帮帮我吧 谢谢 public class MouseWheelEventDemo extends JPanel implements MouseWheelListener { JTextArea textArea; JScrollPane scrollPane; final static String newline = "\n"; private static ImageDelegate mImage; static JFrame frame = new JFrame("Project 2007.4.7"); static Graphics g; static String[] names = {"example1.jpg","example2.jpg","example3.jpg","example4.jpg","example5.jpg"}; int count = 0; public MouseWheelEventDemo() { super(new BorderLayout()); textArea = new JTextArea(); textArea.setEditable(false); scrollPane = new JScrollPane(textArea); scrollPane.setVerticalScrollBarPolicy( JScrollPane.VERTICAL_SCROLLBAR_ALWAYS); scrollPane.setSize( new Dimension (1024,768)); add(scrollPane, BorderLayout.CENTER); //Register for mouse-wheel events on the text area. textArea.addMouseWheelListener(this); setPreferredSize(new Dimension(1024, 768)); setBorder(BorderFactory.createEmptyBorder(20,20,20,20)); } public void mouseWheelMoved(MouseWheelEvent e){ // String message; int notches = e.getWheelRotation(); if (notches == -1){ count--; } else{ count++; } if( count > 4 ) count = 0; else if( count < 0) count = 4; ShowOff_test( names[ count ]); System.out.println("TEST: " + names[ count ]); } public void paint( Graphics g ) { Graphics2D g2 = (Graphics2D)g; // Turn on antialiasing. g2.setRenderingHint( RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON ); g2.drawImage( MouseWheelEventDemo.mImage.getImage(), 0, 0, null ); //frame.dispose(); //g2.dispose(); } public static void ShowOff_test( String filename) { try { final Image image = ImageIO.read( new File( filename ) ); mImage = ( new ImageDelegate() { public Image getImage() { return image; } } ); //this.setSize( mImage.getWidth( null ), mImage.getHeight( null ) ); } catch ( Exception _ ) { throw new RuntimeException( _ ); } } /** * Create the GUI and show it. For thread safety, * this method should be invoked from the * event-dispatching thread. */ private static void createAndShowGUI() { //Create and set up the window. frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); //Create and set up the content pane. JComponent newContentPane = new MouseWheelEventDemo(); newContentPane.setOpaque(false); //content panes must be opaque frame.setContentPane(newContentPane); //Display the window. frame.pack(); //frame.update(mImage.getGraphics()); frame.dispose(); frame.setVisible(true); } public static void main(String[] args) { //Schedule a job for the event-dispatching thread: //creating and showing this application's GUI. ShowOff_test( names[ 0 ]); javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } } -- 想要赚大钱的= = 来找我吧~ 介绍全台湾即将引爆最新的产业给您 非传直销唷 --

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