Symbian3/PDK/Source/GUID-B71F0B0C-CFEB-583F-841D-07340DD6B9CE.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Tue, 30 Mar 2010 11:56:28 +0100
changeset 5 f345bda72bc4
parent 1 25a17d01db0c
child 14 578be2adaf3e
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Week 12 contribution of PDK documentation_content. See release notes for details. Fixes Bug 2054, Bug 1583, Bug 381, Bug 390, Bug 463, Bug 1897, Bug 344, Bug 1319, Bug 394, Bug 1520, Bug 1522, Bug 1892"
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<?xml version="1.0" encoding="utf-8"?>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
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<!-- This component and the accompanying materials are made available under the terms of the License 
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"Eclipse Public License v1.0" which accompanies this distribution, 
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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Contributors: 
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-->
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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept id="GUID-B71F0B0C-CFEB-583F-841D-07340DD6B9CE" xml:lang="en"><title>Using
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f345bda72bc4 Week 12 contribution of PDK documentation_content. See release notes for details. Fixes Bug 2054, Bug 1583, Bug 381, Bug 390, Bug 463, Bug 1897, Bug 344, Bug 1319, Bug 394, Bug 1520, Bug 1522, Bug 1892"
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TDes8Overflow</title><shortdesc>Use TDes8Overflow to handle overflow issues when calling the<codeph>TDes8::AppendFormat()</codeph> function.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>The <codeph>Overflow()</codeph> member function of the overflow handler, <xref href="GUID-6A13E649-D15A-3BD7-B5C2-4DC23211F276.dita"><apiname>TDes8Overflow</apiname></xref>,
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can be defined and implemented to handle a potential descriptor overflow resulting
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from a call to <xref href="GUID-445B19E5-E2EE-32E2-8D6C-C7D6A9B3C507.dita#GUID-445B19E5-E2EE-32E2-8D6C-C7D6A9B3C507/GUID-E8BE9DD1-2D96-3E8E-943A-CD2ECFD78333"><apiname>TDes8::AppendFormat()</apiname></xref>.</p>
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<p>There are many actions that the overflow function can perform but some
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possibilities are:</p>
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<ul>
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<li id="GUID-0543F1D9-4DAA-5433-BF08-55CF7DB7D690"><p>just return - in effect,
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this suppresses the panic caused by the overflow.</p> </li>
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<li id="GUID-F8D403D7-903E-5FAC-8ADC-F2FD0EE6CA6B"><p>leave.</p> </li>
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<li id="GUID-B28E1AF3-F1C0-51F4-97C3-EA8CCD2CDF2D"><p>replace the entire string
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with some error indication, e.g. "Overflowed"</p> </li>
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</ul>
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<p>For more complex recovery actions, it may be easier to set a flag in the
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implementation of the <codeph>TDes8Overflow</codeph> class and check it on
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return from the call to <codeph>AppendFormat()</codeph>.</p>
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</conbody></concept>