Name: diC59631 Date: 12/04/97


The swing 0.6.1 JScrollPane is broken.
Specifically, the scroll bars are brought
up when a component which is smaller than the
viewport is put in the scrollpane, and the
scrollpane is resized smaller. The 0.5.1 code
which worked is listed below. 0.6.1 breaks it.

To see the effect, compile the following under
both 0.5.1 and 0.6.1. When run you will get a
window with a scrolled pane which contains a
simple "Hello World." button. Dragging the
window larger seems to be okay, but shrinking
the window in 0.6.1 causes scrollbars to appear
with no thumb visible. Weird.

-------- CUT HERE --------

import java.awt.*;
import com.sun.java.swing.*;

public class Scroller
{
  public static void main(String argv[])
  {
    Frame application = new Frame("Scroller");

    JScrollPane scroller =
        new JScrollPane(ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED,
                        ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);

    JButton button = new JButton("Hello World.");

    application.add("Center",scroller);

    application.setSize(640,480);
    application.show();

    scroller.getViewport().add(button);
  }
}
(Review ID: 21296)
======================================================================