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Re: java.awt.Frame - How to repaint without background update

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From	MaciekL <__nospam__maclab@o2.pl>
Newsgroups	comp.lang.java.programmer
Subject	Re: java.awt.Frame - How to repaint without background update
Date	Fri, 05 Aug 2011 13:45:27 +0200
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solved:

Adding additonal update method makes that Background is not displayed

public void update(Graphics g) { paint(g); }

Maciek

-- 
Regards

On 2011-08-05 13:15, MaciekL wrote:
> import java.awt.*;
> import java.awt.image.*;
> public class TestApp extends Frame implements Runnable
> {
>   BufferedImage img = new BufferedImage(640, 480,
> BufferedImage.TYPE_INT_RGB);
>   public TestApp()
>   {
>     Graphics g = img.getGraphics();
>     g.setColor(Color.RED);
>     g.drawRect(0, 0, img.getWidth() - 1, img.getHeight() - 1);
>     g.setColor(Color.BLUE);
>     g.fillRect(1, 1, img.getWidth() - 2, img.getHeight() - 2);
>     (new Thread(this)).start();
>   }
>   public void run()
>   {
>     while (true)
>     {
>       try { Thread.sleep(100); }
>       catch (Exception e) { }
>       repaint();
>     }
>   }
>   public void paint(Graphics g)
>   {
>     g.drawImage(img, 50, 50, this);
>   }
>   public static void main(String [] args)
>   {
>     Frame frame = new TestApp();
>     frame.setSize(740, 580);
>     frame.setLocation(50, 50);
>     frame.setVisible(true);
>   }
> }

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Re: java.awt.Frame - How to repaint without background update MaciekL <__nospam__maclab@o2.pl> - 2011-08-05 13:45 +0200
  Re: java.awt.Frame - How to repaint without background update Knute Johnson <september@knutejohnson.com> - 2011-08-05 08:30 -0700
    Re: java.awt.Frame - How to repaint without background update Ian Shef <invalid@avoiding.spam> - 2011-08-05 19:48 +0000

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