Horizontal scroll bar doesn't show up?

Question

   JScrollBar _horizontalScroll;
  _verticalScroll = new JScrollBar(JScrollBar.VERTICAL);
   this.add(_verticalScroll);
   _verticalScroll.addAdjustmentListener(this);
   _verticalScroll.setVisible(true);
   _horizontalScroll = new JScrollBar(JScrollBar.HORIZONTAL);
   _horizontalScroll.addAdjustmentListener(this);
   _horizontalScroll.setVisible(true);

I have a code shown above, here vertical scroll bar is working fine, but horizontal scroll bar is not working (doesn't appear on my Swing GUI).

Does it require to show horizontal scroll bar? Means does your content extends width of frame/component? — Harry Joy, Jul 15 '11 at 05:33
I believe Harry meant more like "is the child of the scroll pane wider (in pixels) than the frame". If it is not, no scroll-bar will appear. — Andrew Thompson, Jul 15 '11 at 07:43

score 2 · Answer 1 · edited Jul 15 '11 at 05:54

2

Try adding the entire panel into the JScrollPane.

JScrollPane scrollPane = new JScrollPane(panel,
                     ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, 
                     ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED);

And you can add your listeners using

scrollPane.getHorizontalScrollBar().addAdjustmentListener(this);

edited Jul 15 '11 at 05:54

Harry Joy

58,650
30
162
207

answered Jul 15 '11 at 05:39

Suken Shah

1,622
14
20

score 2 · Accepted Answer · answered Jul 15 '11 at 05:41

2

You never add your horizontal scrollbar.

answered Jul 15 '11 at 05:41

Jeffrey

44,417
8
90
141

Horizontal scroll bar doesn't show up?

2 Answers2