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Symbian3/SDK/Source/GUID-F86CFD79-88B1-55E0-AF81-4666D97B7AF5.dita
author Dominic Pinkman <dominic.pinkman@nokia.com>
Tue, 20 Jul 2010 12:00:49 +0100
changeset 13 48780e181b38
parent 7 51a74ef9ed63
permissions -rw-r--r--
Week 28 contribution of SDK documentation content. See release notes for details. Fixes bugs Bug 1897 and Bug 1522.
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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-F86CFD79-88B1-55E0-AF81-4666D97B7AF5" xml:lang="en"><title>Automatic
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file deletion on closure</title><shortdesc>This topic describes how a temporary file can be destroyed automatically
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when the owning thread closes it or if the owning thread crashes. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>Set <codeph>EDeleteOnClose</codeph> when opening a temporary file to enable
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the automatic deletion on closure. <codeph>EDeleteOnClose</codeph> can be
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used with <xref href="GUID-BE0804F6-4375-3C8A-8C83-968F510466E0.dita#GUID-BE0804F6-4375-3C8A-8C83-968F510466E0/GUID-87D0C77C-CC63-3D70-BACE-3C5EE702BD37"><apiname>RFile::Temp()</apiname></xref> and <xref href="GUID-BE0804F6-4375-3C8A-8C83-968F510466E0.dita#GUID-BE0804F6-4375-3C8A-8C83-968F510466E0/GUID-1EB4AA8F-9363-3EC5-8AE2-1F70F15FCF15"><apiname>RFile::Create()</apiname></xref>.
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For example: </p>
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<codeblock id="GUID-F74D3314-7C59-5350-913F-D38AED696799" xml:space="preserve">r = file.Create(TheFs, filename, EFileShareAny | EFileRead | EFileWrite | EDeleteOnClose);</codeblock>
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<p>The purpose of this flag is to prevent memory leaks when components that
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create temporary files crash. </p>
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<section id="GUID-BB928F1C-75DD-409D-8C0A-B753D3B19FE3"><note><ul>
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<li id="GUID-BFA882BB-D312-5FBB-906F-5B27A6B4507D"><p>Existing files cannot
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be opened with <codeph>EDeleteOnClose</codeph> set. Any attempts to do this
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will return the error message <codeph>KErrArgument</codeph>. </p> </li>
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<li id="GUID-CA76B615-62CE-59E5-B1D8-B0628728D7C6"><p>Automatic file deletion
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is not default behavior. </p> </li>
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</ul></note> </section>
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</conbody></concept>
FCL/sftools/depl/docscontent