Java Tutorial/SWT/ScrollBar

Introducing ScrollBar

1. You don"t create ScrollBars directly.
2. You can retrieve a reference to the ScrollBar by calling getHorizontalBar() or getVerticalBar().

Scrollable Styles:

StyleDescriptionSWT.H_SCROLLCreates a horizontal ScrollBar (passes the SWT.HORIZONTAL style to ScrollBar"s constructor)SWT.V_SCROLLCreates a vertical ScrollBar (passes the SWT.VERTICAL style to ScrollBar"s constructor)

Show the selection value by using ScrollBar

   <source lang="java">

import org.eclipse.swt.SWT; import org.eclipse.swt.layout.FillLayout; import org.eclipse.swt.widgets.Display; import org.eclipse.swt.widgets.List; import org.eclipse.swt.widgets.ScrollBar; import org.eclipse.swt.widgets.Shell; public class ScrollBarSelectionValue {

 public static void main(String[] args) {
   Display display = new Display();
   Shell shell = new Shell(display);
   shell.setLayout(new FillLayout());

   // Create a List with a vertical ScrollBar
   List list = new List(shell, SWT.V_SCROLL);
   // Add a bunch of items to it
   for (int i = 0; i < 500; i++) {
     list.add("A list item");
   }
   // Get the ScrollBar
   ScrollBar sb = list.getVerticalBar();
   // Show the selection value
   System.out.println("Selection: " + sb.getSelection());
   shell.open();
   while (!shell.isDisposed()) {
     if (!display.readAndDispatch()) {
       display.sleep();
     }
   }
   display.dispose();
 }

}</source>