Symbian3/SDK/Source/GUID-9EE405E2-2D58-525B-8C33-B1EAC0C5A71A.dita
changeset 0 89d6a7a84779
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-9EE405E2-2D58-525B-8C33-B1EAC0C5A71A.dita	Thu Jan 21 18:18:20 2010 +0000
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+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License 
+"Eclipse Public License v1.0" which accompanies this distribution, 
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+    Nokia Corporation - initial contribution.
+Contributors: 
+-->
+<!DOCTYPE task
+  PUBLIC "-//OASIS//DTD DITA Task//EN" "task.dtd">
+<task xml:lang="en" id="GUID-9EE405E2-2D58-525B-8C33-B1EAC0C5A71A"><title>Network Signal Status Tutorial </title><shortdesc>This tutorial describes how to get the network signal status with the telephony API for applications. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody> <steps id="GUID-457C44A1-1947-51F5-9BBB-7DC61AE2BE3D"> <step id="GUID-DC0EA5D5-2F74-5AEA-B96E-727809E45043"><cmd/><info>create new instance of <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony</apiname></xref>  </info> </step> <step id="GUID-8BB0592B-C650-5FC1-B32A-3D41778D99A2"><cmd/><info>use <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony::GetIndicator()</apiname></xref> to get the network signal status information </info> </step> <step id="GUID-0DE72B37-076D-5C92-9439-DC28F91EDB23"><cmd/><info>you can cancel the asynchronous request with a <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EGetIndicatorCancel</apiname></xref> object </info> </step> <step id="GUID-7841BBB1-8081-5A91-B8D5-5210971EFDB3"><cmd/><info>use the enumeration<xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EIndicatorChange</apiname></xref> to get the notification of any changes to the network signal status </info> </step> <step id="GUID-6E4772BB-C48B-5613-A1C7-5A5A549F4596"><cmd/><info>cancel the notification request with <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EIndicatorChangeCancel</apiname></xref> enumeration. </info> </step> </steps> <example id="GUID-B8922F87-D2CA-5103-B629-628D875CFBBD"><title>Network signal status example</title> <codeblock id="GUID-2EC900DF-10B9-5E63-8F0E-84D396520FDE" xml:space="preserve">#include &lt;e32base.h&gt;
+#include &lt;Etel3rdParty.h&gt;
+
+class CClientApp : public CActive
+    { 
+
+private:
+    CTelephony* iTelephony;
+    CTelephony::TIndicatorV1 iIndicatorV1;
+    CTelephony::TIndicatorV1Pckg iIndicatorV1Pckg;
+
+public:
+    CClientApp(CTelephony* aTelephony);
+    void SomeFunction();
+
+private:
+    /*
+       These are the pure virtual methods from CActive that  
+       MUST be implemented by all active objects
+       */
+    void RunL();
+    void DoCancel();
+   };
+
+CClientApp::CClientApp(CTelephony* aTelephony)
+    : CActive(EPriorityStandard),
+      iTelephony(aTelephony),
+      iIndicatorV1Pckg(iIndicatorV1)
+    {
+    //default constructor
+    }
+
+void CClientApp::SomeFunction()
+    {
+    iTelephony-&gt;GetIndicator(iStatus, iIndicatorV1Pckg);
+    SetActive();
+    }
+
+void CClientApp::RunL()
+    {
+    if(iStatus==KErrNone)
+       {
+       if(iIndicatorV1.iCapabilities &amp; CTelephony::KIndNetworkAvailable)
+          {
+          // We can detect when a network is present
+          if(iIndicatorV1.iIndicator &amp; CTelephony::KIndNetworkAvailable)
+             {} // Network is present
+          else
+             {} // Network is no present
+          }
+       else
+          {} // We do not know whether a network is present
+       }
+    }
+
+void CClientApp::DoCancel()
+    {
+    iTelephony-&gt;CancelAsync(CTelephony::EGetIndicatorCancel);
+    }</codeblock> </example> </taskbody></task>
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