code: /*******************************************************************************
   * Copyright (c) 2000, 2008 IBM Corporation and others.
   * All rights reserved. This program and the accompanying materials
   * are made available under the terms of the Eclipse Public License v1.0
   * which accompanies this distribution, and is available at
   * http://www.eclipse.org/legal/epl-v10.html
   *
   * Contributors:
   *     IBM Corporation - initial API and implementation
   *******************************************************************************/
  package org.omnetpp.common.swt.custom;
  
  import org.eclipse.swt.events.VerifyEvent;
  import org.eclipse.swt.internal.SWTEventListener;
  
  /**
   * Classes which implement this interface provide a method
   * that deals with the event that is generated when a
   * key is pressed.
   *
   * @see VerifyEvent
   * @see <a href="http://www.eclipse.org/swt/">Sample code and further information</a>
   */
  @SuppressWarnings("restriction")
  public interface VerifyKeyListener extends SWTEventListener {
  /**
   * The following event fields are used:<ul>
   * <li>event.character is the character that was typed (input)</li>
   * <li>event.keyCode is the key code that was typed (input)</li>
   * <li>event.stateMask is the state of the keyboard (input)</li>
   * <li>event.doit is processed or not (output)</li>
   * </ul>
   * @param event the verify event
   * @see VerifyEvent
   */
  public void verifyKey (VerifyEvent event);
  }
  