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From "Dmitriy Matveev (JIRA)" <j...@apache.org>
Subject [jira] Created: (HARMONY-4925) [classlib][awt] GDI Objects are not released after calling getGraphics() function of Component class
Date Wed, 10 Oct 2007 16:03:50 GMT
[classlib][awt] GDI Objects are not released after calling getGraphics() function of Component
class
----------------------------------------------------------------------------------------------------

                 Key: HARMONY-4925
                 URL: https://issues.apache.org/jira/browse/HARMONY-4925
             Project: Harmony
          Issue Type: Bug
          Components: Classlib
         Environment: Windows
            Reporter: Dmitriy Matveev


Reproducer:

import java.awt.Frame;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.event.MouseEvent;
import java.awt.event.MouseListener;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

public class Test {

    public static void main(String[] args) {
        final Frame f = new Frame() {
            public void paint(Graphics g) {
                Graphics2D g2d = (Graphics2D) g;
                g2d.drawString("asdf",50,50);
            }
        };

        f.setBounds(0, 0, 800, 600);
        f.setVisible(true);

        f.addWindowListener(new WindowAdapter() {

            public void windowClosing(WindowEvent ev) {
                System.exit(0);
            }
        });
        
        f.addMouseListener(new MouseListener(){
            public void mouseReleased(MouseEvent e){
               f.getGraphics();
            }

            public void mouseClicked(MouseEvent e) {
            }

            public void mouseEntered(MouseEvent e) {
            }

            public void mouseExited(MouseEvent e) {
            }

            public void mousePressed(MouseEvent e) {
            }
        });
    }

}

You may use Windows Task Manager to view the number of used GDI objects.
To do this, you need:   
   1. Click the Processes tab in Task Manager
   2.Click View, then Select Columns.
   5. Check GDI Objects and click OK.
   6. Click the java-process of the test, and scroll to the GDI Objects column.


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