Java Glossary : ScrollPane

Java definitions: 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

You are here : home : Java Glossary : S words : ScrollPane.

ScrollPane

Allows you to display part of a large Panel and let the user scroll to see all over it. In AWT, you use ScrollPane, and in Swing JScrollPane. The Swing version lets you control horizontal and vertical scrollbars independently. With the AWT version, you either have neither or both. With ScrollPane you cannot change the scrolling policy once you set it in the constructor. With JScrollPane you can. Here is how you use it:

import java.awt.ScrollPane;
...
private ScrollPane scroller;
...
// ScrollPane.SCROLLBARS_AS_NEEDED is the default
// ScrollPane.SCROLLBARS_ALWAYS
// ScrollPane.SCROLLBARS_NEVER (rather pointless)
scroller = new ScrollPane( ScrollPane.SCROLLBARS_ALWAYS );

// controls how fast you scroll with the wheelmouse.
scroller.getVAdjustable().setUnitIncrement( 16 );

// add the contents you want scolled, usually a Panel or Canvas
scroller.add ( aPanel );

documentation on ScrollPane : available:

on the web at java.Sun.com
on J: in the JDK 1.4.2_04: J:\j2sdk1.4.2_04\docs\api\java\awt\ScrollPane.html
on J: in the JDK 1.5 beta: J:\Program Files\Java\j2sdk1.5.0\docs\api\java\awt\ScrollPane.html

AWT ¤ Canvas ¤ JScrollPane ¤ Panel ¤ scrollbar ¤ Swing ¤ window differences

home	Canadian Mind Products
	mindprod.com IP:[24.87.56.253]
	Your IP:[80.134.30.163]
	You are visitor number 220.
	Please send errors, omissions and suggestions
	to improve this page to Roedy Green.
	You can get a fresh copy of this page from:	or possibly from your local J: drive mirror:
	http://mindprod.com/jgloss/scrollpane.html	J:\mindprod\jgloss\scrollpane.html