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

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();
  }
}