java - 截图

Question

我想对我创建的面板进行屏幕截图，代码如下。任何人都可以告诉我为什么我没有得到。谢谢

    public static final void makeScreenshot(JFrame argFrame) 
    {
      Rectangle rec = argFrame.getBounds();
      BufferedImage bufferedImage = new BufferedImage(rec.width, rec.height, BufferedImage.TYPE_INT_ARGB);
      argFrame.paint(bufferedImage.getGraphics());

    try 
   {
        // Create temp file.
        File temp = File.createTempFile("C:\\Documents and Settings\\SriHari\\My Documents\\NetBeansProjects\\test\\src\\testscreenshot", ".jpg");

        // Use the ImageIO API to write the bufferedImage to a temporary file
        ImageIO.write(bufferedImage, "jpg", temp);

        //temp.deleteOnExit();
    } 


   catch (IOException ioe) {} 
  } // 
        public static void main(String args[])
        {
           TimeTableGraphicsRunner ts= new TimeTableGraphicsRunner();
           for(long i=1;i<1000000000;i++);
           ts.makeScreenshot(jf);
            System.out.println("hi");
        }

Answer 1

以下内容对我有用:

public static void main (String [] args)
{
    final JFrame frame = new JFrame ();

    JButton button = new JButton (new AbstractAction ("Make Screenshot!")
    {
        @Override
        public void actionPerformed (ActionEvent e)
        {
            Dimension size = frame.getSize ();
            BufferedImage img = new BufferedImage (size.width, size.height, BufferedImage.TYPE_3BYTE_BGR);
            Graphics g = img.getGraphics ();
            frame.paint (g);
            g.dispose ();
            try
            {
                ImageIO.write (img, "png", new File ("screenshot.png"));
            }
            catch (IOException ex)
            {
                ex.printStackTrace ();
            }
        }
    });

    frame.setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
    frame.getContentPane ().setLayout (new BorderLayout ());
    frame.getContentPane ().add (button, BorderLayout.CENTER);
    frame.pack ();
    frame.setVisible (true);
}

它不会渲染窗口标题和边框，因为这是由操作系统处理的，而不是 Swing。