import org.eclipse.swt.*;
import org.eclipse.swt.graphics.Rectangle;
import org.eclipse.swt.widgets.*;

public class Sash_test {

public static void main (String [] args) {
    Display display = new Display ();

    Shell shell = new Shell (display);
    shell.setSize(400, 300);
    shell.setBackground(shell.getDisplay().getSystemColor(SWT.COLOR_BLACK));
    final Sash sash = new Sash (shell, SWT.BORDER | SWT.VERTICAL);
    sash.setBackground(shell.getDisplay().getSystemColor(SWT.COLOR_GREEN));
    Rectangle clientArea = shell.getClientArea ();
    sash.setBounds (180, clientArea.y, 32, clientArea.height);
    sash.addListener (SWT.Selection, new Listener () {
        public void handleEvent (Event e) {
            sash.setBounds (e.x, e.y, e.width, e.height);
        }
    });
    shell.open ();
    sash.setFocus ();
    while (!shell.isDisposed ()) {
        if (!display.readAndDispatch ()) display.sleep ();
    }
    display.dispose ();
}
}