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 task

    11   PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">

    12 <task xml:lang="en" id="GUID-8FC2BA94-2374-5BFE-B4CF-624A6B0056BC"><title>Call Waiting Status Tutorial</title><shortdesc>This tutorial describes how to get the call waiting status information with the telephony API for applications. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody> <steps id="GUID-E24D656A-701E-5B29-B189-06304C4C7DE5"> <step id="GUID-4CDC8306-6814-5E5F-835A-694D1849A746"><cmd/><info>create a new instance of <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony</apiname></xref>  </info> </step> <step id="GUID-C37BEE6E-CB6F-50ED-81F1-4523E2312A6C"><cmd/><info>call<xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname> CTelephony::GetCallWaitingStatus()</apiname></xref> to get the call waiting information </info> </step> <step id="GUID-020F7560-2DC2-59E1-B685-579A33235C56"><cmd/><info>you can cancel the asynchronous request with a <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony::EGetCallWaitingStatusCancel</apiname></xref> enumeration. </info> </step> </steps> <example id="GUID-F3885187-FB33-5490-87C5-184138F7E4B3"><title>Call waiting status example</title> <codeblock id="GUID-05F9F0DE-5D96-55F8-B1B9-A9CE858CF5B7" xml:space="preserve">#include &lt;e32base.h&gt;

    13 #include <Etel3rdParty.h>

    14 

    15 class CClientApp : public CActive

    16     { 

    17 

    18 private:

    19     CTelephony* iTelephony;

    20     CTelephony::TCallWaitingSupplServicesV1 iCallWaitingSupplServicesV1;

    21     CTelephony::TCallWaitingSupplServicesV1Pckg iCallWaitingSupplServicesV1Pckg;

    22 

    23 public:

    24     CClientApp(CTelephony* aTelephony);

    25     void SomeFunction();

    26 

    27 private:

    28     /*

    29        These are the pure virtual methods from CActive that  

    30        MUST be implemented by all active objects

    31        */

    32     void RunL();

    33     void DoCancel();

    34    };

    35 

    36 CClientApp::CClientApp(CTelephony* aTelephony)

    37     : CActive(EPriorityStandard),

    38       iTelephony(aTelephony),

    39       iCallWaitingSupplServicesV1Pckg(iCallWaitingSupplServicesV1)

    40     {

    41     //default constructor

    42     }

    43 

    44 void CClientApp::SomeFunction()

    45     {

    46     iTelephony->GetCallWaitingStatus(iStatus, iCallWaitingSupplServicesV1Pckg);

    47     SetActive();

    48     }

    49 

    50 void CClientApp::RunL()

    51     {

    52     if(iStatus==KErrNone)

    53        {

    54        CTelephony::TSupplServiceStatus callWaitingStatus = iCallWaitingSupplServicesV1.iCallWaiting;

    55        }

    56     }

    57 

    58 void CClientApp::DoCancel()

    59     {

    60     iTelephony->CancelAsync(CTelephony::EGetCallWaitingStatusCancel);

    61     }</codeblock> </example> </taskbody></task>