Swing and Active rendering problem

Question

Hopefully this is the right place to post. I have a problem with active rendering and swing. Basically my code below messes up when I start rendering the swing either using repaint() or paint(g).
If I use repaint() then the gui flickers like mad and if I use paint(g) then I get deadlocks when typing into the textbox.
Any help would be great for what am I doing wrong. How do I solve this problem?
public GuiWindow() {
          try {
               guiImage = ImageIO.read(this.getClass().getResource("Images/Gui2.png"));
          } catch (Exception e) {}
          this.setPreferredSize(new Dimension(800, 600));
          this.setUndecorated(true);
          this.setIgnoreRepaint(true);
          this.setResizable(false);
          this.addKeyListener(kl);
          this.setFocusable(true);
          this.requestFocus();
          this.setTitle("PWO");
          JPanel panel = new JPanel()
          public void paintComponent(Graphics g)
          //Scale image to size of component
               super.paintComponent(g);
               Dimension d = getSize();
               g.drawImage(guiImage, 0, 0, d.width, d.height, null);
               this.setIgnoreRepaint(true);
                        //draw background for the gui
          JTextField Name = new JTextField(20);
          panel.add(Name);
          this.setContentPane(panel);
                myRenderingLoop();
public void myRenderingLoop() {
          int fps = 20;
          long startTime;
          int frameDelay = 1000 / fps;
          this.createBufferStrategy(2);
          BufferStrategy myStrategy = this.getBufferStrategy();
          Graphics2D g;
          while (!done) {
               startTime = System.currentTimeMillis();          
               do {
                    do {
                         g = (Graphics2D)myStrategy.getDrawGraphics();
                         this.repaint();
                         this.render(g); //render the game
                         g.dispose();
                    } while (myStrategy.contentsRestored());
                    myStrategy.show();
                    Toolkit.getDefaultToolkit().sync();
               } while (myStrategy.contentsLost());
               while (System.currentTimeMillis() - startTime < frameDelay) {
                    try {
                         Thread.sleep(15);
                    } catch (InterruptedException ex){}
     }Edited by: Aammbi on Apr 6, 2008 7:05 PM

Answer 1

I really have no idea what your code is trying to do, but a few comments.
1) There is no need to use a BufferStrategy since Swing is double buffered automatically
2) Don't use a while loop with a Thread.sleep(). Chances are the GUI EDT is sleeping which makes the GUI unresponsive
3) Use a Swing Timer for animation.
If you need further help then you need to create a [Short, Self Contained, Compilable and Executable, Example Program (SSCCE)|http://homepage1.nifty.com/algafield/sscce.html], that demonstrates the incorrect behaviour.