Running the attached test case. Click on the choice menu; while the choice menu is up, move the mouse into drawing canvas. A mouse press on canvas will generate one mouse pressed event and another one with click_count set to 2 as in the following output:

---mousePressed: java.awt.event.MouseEvent[MOUSE_PRESSED,(213,203),mods=16,clickCount=1] on panel0

---mousePressed: java.awt.event.MouseEvent[MOUSE_PRESSED,(213,203),mods=16,clickCount=2] on panel0

It should have generated one mouse pressed event.

/*
 * @(#)DrawTest.java 1.4 98/03/23
 *
 * Copyright (c) 1997 Sun Microsystems, Inc. All Rights Reserved.
 *
 * Sun grants you ("Licensee") a non-exclusive, royalty free, license to use,
 * modify and redistribute this software in source and binary code form,
 * provided that i) this copyright notice and license appear on all copies of
 * the software; and ii) Licensee does not utilize the software in a manner
 * which is disparaging to Sun.
 *
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING ANY
 * IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
 * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN AND ITS LICENSORS SHALL NOT BE
 * LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING
 * OR DISTRIBUTING THE SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR ITS
 * LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT,
 * INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER
 * CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF
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 * This software is not designed or intended for use in on-line control of
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 */

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

import java.util.Vector;

public class DrawTest extends Applet{
    DrawPanel panel;
    DrawControls controls;

    public void init() {
        setLayout(new BorderLayout());
        panel = new DrawPanel();
        controls = new DrawControls(panel);
        add("Center", panel);
        add("South",controls);
    }

    public void destroy() {
        remove(panel);
        remove(controls);
    }

    public static void main(String args[]) {
        Frame f = new Frame("DrawTest");
        DrawTest drawTest = new DrawTest();
        drawTest.init();
        drawTest.start();

        f.add("Center", drawTest);
        f.setSize(300, 300);
        f.show();
    }
    public String getAppletInfo() {
        return "A simple drawing program.";
    }
}

class DrawPanel extends Panel implements MouseListener, MouseMotionListener {
    public static final int LINES = 0;
    public static final int POINTS = 1;
    int mode = LINES;
    Vector lines = new Vector();
    Vector colors = new Vector();
    int x1,y1;
    int x2,y2;
    int xl, yl;

    public DrawPanel() {
        setBackground(Color.white);
        addMouseMotionListener(this);
        addMouseListener(this);
    }

    public void setDrawMode(int mode) {
        switch (mode) {
          case LINES:
          case POINTS:
            this.mode = mode;
            break;
          default:
            throw new IllegalArgumentException();
        }
    }


    public void mouseDragged(MouseEvent e) {
        // e.consume();
        switch (mode) {
            case LINES:
                xl = x2;
                yl = y2;
                x2 = e.getX();
                y2 = e.getY();
                break;
            case POINTS:
            default:
                colors.addElement(getForeground());
                lines.addElement(new Rectangle(x1, y1, e.getX(), e.getY()));
                x1 = e.getX();
                y1 = e.getY();
                break;
        }
        repaint();
    }

    public void mouseMoved(MouseEvent e) {
    }

    public void mousePressed(MouseEvent e) {
        // e.consume();
        System.out.println("\n---mousePressed: "+ e);
        switch (mode) {
            case LINES:
                x1 = e.getX();
                y1 = e.getY();
                x2 = -1;
                break;
            case POINTS:
            default:
                colors.addElement(getForeground());
                lines.addElement(new Rectangle(e.getX(), e.getY(), -1, -1));
                x1 = e.getX();
                y1 = e.getY();
                repaint();
                break;
        }
    }
    public void mouseReleased(MouseEvent e) {
        // e.consume();
        System.out.println("\n---mouseReleased: "+ e);
        switch (mode) {
            case LINES:
                colors.addElement(getForeground());
                lines.addElement(new Rectangle(x1, y1, e.getX(), e.getY()));
                x2 = xl = -1;
                break;
            case POINTS:
            default:
                break;
        }
        repaint();
    }

    public void mouseEntered(MouseEvent e) {
    }

    public void mouseExited(MouseEvent e) {
    }

    public void mouseClicked(MouseEvent e) {
    }

    public void paint(Graphics g) {
        int np = lines.size();

        /* draw the current lines */
        g.setColor(getForeground());
        g.setPaintMode();
        for (int i=0; i < np; i++) {
            Rectangle p = (Rectangle)lines.elementAt(i);
            g.setColor((Color)colors.elementAt(i));
            if (p.width != -1) {
                g.drawLine(p.x, p.y, p.width, p.height);
            } else {
                g.drawLine(p.x, p.y, p.x, p.y);
            }
        }
        if (mode == LINES) {
            g.setXORMode(getBackground());
            if (xl != -1) {
                /* erase the last line. */
                g.drawLine(x1, y1, xl, yl);
            }
            g.setColor(getForeground());
            g.setPaintMode();
            if (x2 != -1) {
                g.drawLine(x1, y1, x2, y2);
            }
        }
    }
}
class DrawControls extends Panel implements ItemListener {
    DrawPanel target;

    public DrawControls(DrawPanel target) {
        this.target = target;
        setLayout(new FlowLayout());
        setBackground(Color.lightGray);
        target.setForeground(Color.red);
        CheckboxGroup group = new CheckboxGroup();
        Checkbox b;
        add(b = new Checkbox(null, group, false));
        b.addItemListener(this);
        b.setBackground(Color.red);
        add(b = new Checkbox(null, group, false));
        b.addItemListener(this);
        b.setBackground(Color.green);
        add(b = new Checkbox(null, group, false));
        b.addItemListener(this);
        b.setBackground(Color.blue);
        add(b = new Checkbox(null, group, false));
        b.addItemListener(this);
        b.setBackground(Color.pink);
        add(b = new Checkbox(null, group, false));
        b.addItemListener(this);
        b.setBackground(Color.orange);
        add(b = new Checkbox(null, group, true));
        b.addItemListener(this);
        b.setBackground(Color.black);
        target.setForeground(b.getForeground());
        Choice shapes = new Choice();
        shapes.addItemListener(this);
        shapes.addItem("Lines");
        shapes.addItem("Points");
        shapes.setBackground(Color.lightGray);
        add(shapes);
    }

    public void paint(Graphics g) {
        Rectangle r = getBounds();

        g.setColor(Color.lightGray);
        g.draw3DRect(0, 0, r.width, r.height, false);
    }

  public void itemStateChanged(ItemEvent e) {
    if (e.getSource() instanceof Checkbox) {
      target.setForeground(((Component)e.getSource()).getBackground());
    } else if (e.getSource() instanceof Choice) {
      String choice = (String) e.getItem();
      if (choice.equals("Lines")) {
        target.setDrawMode(DrawPanel.LINES);
      } else if (choice.equals("Points")) {
        target.setDrawMode(DrawPanel.POINTS);
      }
    }
  }
}


The above test now runs fine on Solaris FCS build. However, on WinNT, the test only prints a mouseReleased event. It also draws a line from (0,0) to the clicked point on the panel.
xianfa.deng@Eng 1998-10-29