SashForms can be either horizontal or vertical: SWT.HORIZONTAL or SWT.VERTICAL, : SashForm « SWT « Java Tutorial

1. Java Tutorial
2. SWT
3. SashForm

To create a horizontal SashForm:

import org.eclipse.swt.SWT;
import org.eclipse.swt.custom.SashForm;
import org.eclipse.swt.layout.FillLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;

public class SashFormCreate {
  public static void main(String[] args) {
    Display display = new Display();
    Shell shell = new Shell(display);
    shell.setText("SashForm Test");
    // Fill the parent window with the buttons and sash
    shell.setLayout(new FillLayout());

    // Create the SashForm and the buttons
    SashForm sashForm = new SashForm(shell, SWT.HORIZONTAL);
    new Button(sashForm, SWT.PUSH).setText("Left");
    new Button(sashForm, SWT.PUSH).setText("Right");

    shell.open();
    while (!shell.isDisposed()) {
      if (!display.readAndDispatch()) {
        display.sleep();
      }
    }
    display.dispose();

  }
}

17.85.SashForm
	17.85.1.	SashForms can be either horizontal or vertical: SWT.HORIZONTAL or SWT.VERTICAL,
	17.85.2.	Change SashForm Weight
	17.85.3.	Change SashForm Orientation
	17.85.4.	Maximize Control
	17.85.5.	Control the width in pixels of all sashes
	17.85.6.	Vertical SashForm
	17.85.7.	SashForm: create a sash form with three children