--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-AC5665B4-8E33-58A3-824B-6CC40E13160A.dita	Wed Mar 31 11:11:55 2010 +0100
@@ -0,0 +1,62 @@
+<?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-AC5665B4-8E33-58A3-824B-6CC40E13160A"><title>Signal Strength Information Tutorial</title><shortdesc>This tutorial describes how to get the signal strength information with the telephony API for applications. </shortdesc><prolog><metadata><keywords/></metadata></prolog><taskbody> <steps id="GUID-118619CA-9C07-578D-B36A-0CEDA713DEF6"> <step id="GUID-C52B6FA6-6291-5222-8943-C2AF63432054"><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-7AF254B4-BBDE-5F65-801E-95E39353CDDB"><cmd/><info>use <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony::GetSignalStrength()</apiname></xref> to get the signal strength information </info> </step> <step id="GUID-A9D065A3-6247-5600-9501-F0D78367D874"><cmd/><info>you can cancel the asynchronous request with a <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>EGetSignalStrengthCancel</apiname></xref> </info> </step> <step id="GUID-46E2E940-FFC4-5C20-A809-65966C993A0E"><cmd/><info>pass the enumeration <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony::ESignalStrengthChange</apiname></xref> to get the notification of any changes to the signal strength information </info> </step> <step id="GUID-99E58056-7B48-5439-B084-4E06CABC49D0"><cmd/><info>pass the enumeration <xref href="GUID-97D402C8-B4B7-385A-92B3-D3FCC0CA575A.dita"><apiname>CTelephony::ESignalStrengthChangeCancel</apiname></xref> to cancel the notification request. </info> </step> </steps> <example id="GUID-7D719A16-CC6E-59F8-9B2B-ED7A8E9EC516"><title>Signal strength example</title> <codeblock id="GUID-E35C1AE7-A832-57DB-8600-E1CA73F0B308" xml:space="preserve">#include &lt;e32base.h&gt;
+#include &lt;Etel3rdParty.h&gt;
+
+class CClientApp : public CActive
+    { 
+
+private:
+    CTelephony* iTelephony;
+    CTelephony::TSignalStrengthV1 iSigStrengthV1;
+    CTelephony::TSignalStrengthV1Pckg iSigStrengthV1Pckg;
+
+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),
+      iSigStrengthV1Pckg(iSigStrengthV1)
+    {
+    //default constructor
+    }
+
+void CClientApp::SomeFunction()
+    {
+    iTelephony-&gt;GetSignalStrength(iStatus, iSigStrengthV1Pckg);
+    SetActive();
+    }
+
+void CClientApp::RunL()
+    {
+    if(iStatus==KErrNone)
+       {
+       TInt32 sigStrength = iSigStrengthV1.iSignalStrength;
+       TInt8 bar = iSigStrengthV1.iBar;
+       }
+    }
+
+void CClientApp::DoCancel()
+    {
+    iTelephony-&gt;CancelAsync(CTelephony::EGetSignalStrengthCancel);
+    }</codeblock> </example> </taskbody></task>
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