Fernando
O c�digo abaixo faz o que voc� precisa.
� s� voc� utilizar o Scrollbar do Scrollpane que ele
tem as propriedades necess�rias.
import java.awt.BorderLayout;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JScrollBar;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
public class JScrollPaneTest extends JFrame {
String doc =
"asdfd asdfadf asdfadf asfadf \nadsfaf asdfadf
asdfasdf \n"
+ "asdfadf asdfafda asdfadf a sdfadf
asdfasd \n"
+ "asdfadf asdfafda asdfadf\n a sdfadf
asdfasd\n "
+ "asdfadf asdfafda asdfadf asdfafda
asdfadf asdfafda asdfadf a sdfadf asdfasd\n "
+ "asdfadf asdfafda asdfadf asdfafda
asdfadf asdfafda asdfadf a sdfadf asdfasd\n "
+ "asdfadf asdfafda asdfadf asdfafda
asdfadf asdfafda asdfadf a sdfadf asdfasd\n "
+ "asdfadf asdfafda asdfa\ndf a sdfadf
asdfasd \n"
+ "asdfadf asdfafda asdfadf a sdfadf
asdfasd \n"
+ "asdfa sdfadsf asdfadf as\ndfad asdfad
asdfadf";
JTextArea area;
JScrollPane scroller;
JButton up;
JButton dn;
JButton lf;
JButton rg;
JScrollBar verbar; //armazena o scrollbar vertical
do scroller
JScrollBar horbar; //armazena o scrollbar
horizontal do scroller
JScrollPaneTest() {
super("AutoScroller Tester");
JPanel panel = (JPanel) getContentPane();
area = new JTextArea(10, 10);
area.setText(doc);
area.setWrapStyleWord(true);
scroller = new JScrollPane(area);
verbar = scroller.getVerticalScrollBar();
horbar = scroller.getHorizontalScrollBar();
panel.add(scroller, BorderLayout.CENTER);
JPanel panelButton = new JPanel(new
FlowLayout());
lf = new JButton("Left");
up = new JButton("Up");
dn = new JButton("Down");
rg = new JButton("Right");
panelButton.add(lf);
panelButton.add(up);
panelButton.add(dn);
panelButton.add(rg);
BtnListener b = new BtnListener();
up.addActionListener(b);
dn.addActionListener(b);
rg.addActionListener(b);
lf.addActionListener(b);
panel.add(panelButton, BorderLayout.SOUTH);
pack();
show();
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
class BtnListener implements ActionListener {
public void actionPerformed(ActionEvent e) {
if(e.getActionCommand().equals("Down")){
verbar.setValue(verbar.getValue()+1);
} else
if(e.getActionCommand().equals("Up")){
verbar.setValue(verbar.getValue()-1);
} else
if(e.getActionCommand().equals("Left")){
horbar.setValue(horbar.getValue()-1);
} else
if(e.getActionCommand().equals("Right")){
horbar.setValue(horbar.getValue()+1);
}
}
}
public static void main(String[] args) {
new JScrollPaneTest();
}
}
--- Fernando <[EMAIL PROTECTED]> wrote:
> Estou usando o JAreaText em um JScroolPane... eu n�o
> encontrei nada na documenta��o que fa�a rolar a
> barra para cima ou para baixo via C�DIGO fonte.
> (Isso normalmente acontece autom�ticamente pelo
> componente JScroolPane, mas eu preciso executar via
> c�digo as vezes subir, outras descer.)
>
> Fernando Franzine
>
>
>
> ---
> Outgoing mail is certified Virus Free.
> Checked by AVG anti-virus system
> (http://www.grisoft.com).
> Version: 6.0.501 / Virus Database: 299 - Release
> Date: 14/07/03
>
=====
[EMAIL PROTECTED]
www.marcelloschmidt.tk
Linux user #297319
http://counter.li.org
__________________________________
Do you Yahoo!?
Yahoo! SiteBuilder - Free, easy-to-use web site design software
http://sitebuilder.yahoo.com
---------------------------------------------------------------------
Para cancelar a subscri��o, envie mensagem para: [EMAIL PROTECTED]
Para comandos adicionais, envie mensagem para: [EMAIL PROTECTED]
