1 <?xml version="1.0" encoding="utf-8"?>

     2 <!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->

     3 <!-- This component and the accompanying materials are made available under the terms of the License 

     4 "Eclipse Public License v1.0" which accompanies this distribution, 

     5 and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->

     6 <!-- Initial Contributors:

     7     Nokia Corporation - initial contribution.

     8 Contributors: 

     9 -->

    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-E1A2872E-6E8D-4C02-B3C0-23213FD56106" xml:lang="en"><title>Handling

    13 button events</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <p>Use the <codeph>MCoeControlObserver</codeph> observer interface to observe

    15 button events. Set the button container to be its observer.</p>

    16 <p>For more information on events, see <xref href="GUID-A9330FEF-C559-4E2B-B064-0151FDADEA8C.dita">Event

    17 handling</xref>.</p>

    18 <codeblock xml:space="preserve">void CMyAppContainer::HandleControlEventL( CCoeControl* aControl, 

    19                                                   TCoeEvent aEventType ) 

    20     { 

    21         switch ( aEventType ) 

    22             { 

    23 

    24 // Button state changed (button was pressed) 

    25 

    26             case EEventStateChanged: 

    27                 … 

    28                 break; 

    29 

    30 // Button is pressed for a long time (in case of 

    31 // a KAknButtonReportOnLongPress flagged button) 

    32 

    33             case CAknButton::ELongPressEvent: 

    34                 … 

    35                 break; 

    36 

    37 // Button long press ended (in case of 

    38 // a KAknButtonReportOnLongPress flagged button) 

    39 

    40             case CAknButton::ELongPressEndedEvent: 

    41                 … 

    42                 break; 

    43 

    44             default: 

    45                 break; 

    46             } 

    47     } 

    48 

    49 </codeblock>

    50 </conbody></concept>