*    <li>ERROR_WIDGET_DISPOSED - if the receiver has been disposed</li>
 *    <li>ERROR_THREAD_INVALID_ACCESS - if not called from the thread that created the receiver</li>
 * </ul>
 */
public CTableItem getItem (int index) {
	checkWidget ();
	if (!(0 <= index && index < itemsCount)) SWT.error (SWT.ERROR_INVALID_RANGE);
	return items [index];
}