###@###.### (Russ Ethington)

Calling Graphics.clearRect() leaks GDI resources

Steps to reproduce
Compile java source code below
Run Win 95 Resource Meter
Run Java ClearTest
// note: GDI resources will continue to drop.


import java.awt.*;
import java.applet.*;

public class ClearTest extends Applet implements Runnable
{
   char string[];
   Thread life = null;

   public void init() {
      string = "Watch the Windows 95 resource meter!".toCharArray();
      resize(300, 50);
   }
   
   public void update(Graphics g) {
/* -->The next line eats Windows resources like crazy */
      g.clearRect(0, 0, 300, 50);
      g.drawChars(string, 0, string.length, 0,
                  g.getFontMetrics().getHeight());
   }

   public void start() {
      if (life == null) {
         life = new Thread(this);
         life.setPriority(Thread.MIN_PRIORITY);
         life.start();
      }
   }

   public void run() {
      while (life != null) {
         repaint();
         try life.sleep(10);
         catch (InterruptedException e) break;
      }
   }
   
   public void stop() { life = null; }

    // added 11/10/95 by kasmith
    public static void main(String args[])
    {
       Applet a = new ClearTest();
       a.init();
       a.start();

       AppFrame f = new AppFrame("Win 95 GDI test");
       f.add("Center", a);
       f.resize( a.size() );
       f.show();
    }
}

/* Generic Application Frame
 * @(#)AppFrame.java 1.2 08 Nov 1995 10:00:20
 * @author Kevin A. Smith
 *
 * In order to convert an applet to an application you must provide
 * two things: A main() function in the class body of the applet
 * and an AWT Frame window for the application to exist in. If your
 * applet requires parameters from the HTML Applet tag, you will need
 * to do additional work.
 *
 * Here's a sample main() function that you can add to your applet class:
 *
 * public static void main(String args[])
 * {
 * String title = "Application Title";
 *
 * // create an instance of your applet class
 * Applet a = new <Applet Class Name>();
 *
 * // initialize the applet
 * a.init();
 * a.start();
 *
 * // create new application frame window
 * AppFrame f = new AppFrame(title);
 *
 * // add applet to frame window
 * f.add("Center", a);
 *
 * // resize frame window to fit applet
 * // assumes that the applet sets its own size
 * // otherwise, you should set a specific size here.
 * f.resize( a.size() );
 *
 * // show the window
 * f.show();
 *
 * } // end main()
 *
 *
 * The class AppFrame provides a simple AWT Frame window for running
 * applications.
 *
 */

import java.awt.Frame;
import java.awt.Event;

// Application Frame window
class AppFrame extends Frame
{
    // constructor needed to pass window title to class Frame
    public AppFrame(String name)
    {
       // call java.awt.Frame(String) constructor
       super(name);
    }

    // needed to allow window close
    public boolean handleEvent(Event e)
    {
       // Window Destroy event
       if (e.id == Event.WINDOW_DESTROY)
       {
          // exit the program
          System.exit(0);
          return true;
       }
       
       // it's good form to let the super class look at any
       // unhandled events
       return super.handleEvent(e);

    } // end handleEvent()
}