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/*******************************************************************************
* Copyright (c) 2015 RCP Vision (http://www.rcp-vision.com) 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:
* Vincenzo Caselli - Initial contribution and API
*
*******************************************************************************/
package org.eclipse.swt.events;
import org.eclipse.swt.internal.SWTEventListener;
/**
* Classes which implement this interface provide a method that deals with the
* event that is generated when help is requested for a control, typically when
* the user presses F1.
* <p>
* After creating an instance of a class that implements this interface it can
* be added to a control using the <code>addHelpListener</code> method and
* removed using the <code>removeHelpListener</code> method. When help is
* requested for a control, the helpRequested method will be invoked.
* </p>
*
* @see HelpEvent
*/
public interface HelpListener extends SWTEventListener {
/**
* Sent when help is requested for a control, typically when the user
* presses F1.
*
* @param e
* an event containing information about the help
*/
public void helpRequested(HelpEvent e);
}