Name: gm110360 Date: 02/04/2004


FULL PRODUCT VERSION :
java version "1.4.1_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.1_01-b01)
Java HotSpot(TM) Client VM (build 1.4.1_01-b01, mixed mode)

FULL OPERATING SYSTEM VERSION :
Microsoft Windows 2000 [Version 5.00.2195]
Service Pack 3

A DESCRIPTION OF THE PROBLEM :
The "old modifiers" ALT_MASK and META_MASK are reset if
combined with BUTTON1_MASK when instantiating a MouseEvent.

In this situation, the constructor of MouseEvent calls
setNewModifiers(), which resets the BUTTON2_MASK and
BUTTON3_MASK. Unfortunately these corresponds to ALT_MASK
and META_MASK.

REGRESSION. Last worked in version 1.3.1

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
1. Run the attached program


EXPECTED VERSUS ACTUAL BEHAVIOR :
With JDK 1.4.1, the output is:
isAltDown: false

While with JDK 1.3.1 it is:
isAltDown: true

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
import java.awt.event.MouseEvent;
import javax.swing.JButton;

public class MouseEventTest {

  public MouseEventTest() {
    MouseEvent e = new MouseEvent(new JButton(),
                                  MouseEvent.MOUSE_PRESSED,
                                  1,
                                  MouseEvent.BUTTON1_MASK | MouseEvent.ALT_MASK,
                                  10,
                                  10,
                                  1,
                                  false);

    boolean isAltDown =
        (e.getModifiers() & MouseEvent.ALT_MASK) == MouseEvent.ALT_MASK;
    System.out.println( "isAltDown: " + isAltDown);
    System.exit(0);
  }

  public static void main(String[] args) {
    MouseEventTest mouseEventTest1 = new MouseEventTest();
  }
}
---------- END SOURCE ----------

Release Regression From : 1.3.1_10
The above release value was the last known release where this
bug was known to work. Since then there has been a regression.

(Incident Review ID: 181632)
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