Symbian3/PDK/Source/GUID-7CE86E8C-0187-5679-B87D-71ABDE479048.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Thu, 11 Mar 2010 18:02:22 +0000
changeset 3 46218c8b8afa
parent 1 25a17d01db0c
child 5 f345bda72bc4
permissions -rw-r--r--
week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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<?xml version="1.0" encoding="utf-8"?>
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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<!-- This component and the accompanying materials are made available under the terms of the License 
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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"Eclipse Public License v1.0" which accompanies this distribution, 
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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<!-- Initial Contributors:
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents: 1
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    Nokia Corporation - initial contribution.
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents: 1
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Contributors: 
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
parents: 1
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-->
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
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<!DOCTYPE concept
46218c8b8afa week 10 bug fix submission (SF PDK version): Bug 1892, Bug 1897, Bug 1319. Also 3 or 4 documents were found to contain code blocks with SFL, which has been fixed. Partial fix for broken links, links to Forum Nokia, and the 'Symbian platform' terminology issues.
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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25a17d01db0c Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
Dominic Pinkman <Dominic.Pinkman@Nokia.com>
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<concept xml:lang="en" id="GUID-7CE86E8C-0187-5679-B87D-71ABDE479048"><title>Externalising and internalising descriptors</title><prolog><metadata><keywords/></metadata></prolog><conbody><section><title>Externalising</title> <p>Descriptors can be externalised in one of two ways:</p> <ul><li id="GUID-184B3A20-23C7-5F6C-80B0-B8902CC56DE8"><p>using the <codeph>WriteL()</codeph> member functions of the <codeph>RWriteStream</codeph> class.</p> </li> <li id="GUID-8593FABC-5C26-5155-8181-A9614126D678"><p>using the templated stream <codeph>operator&lt;&lt;</codeph> </p> </li> </ul> <p>The <codeph>WriteL()</codeph> member functions of <codeph>RWriteStream</codeph> write only the <i>content</i> of a descriptor to the stream; they do not write any length information.</p> <p>The <codeph>operator&lt;&lt;</codeph> is implemented by the Store framework to write <i>both</i> the length of the descriptor content and the content itself to the stream.</p> <p>Use of the <codeph>operator&lt;&lt;</codeph> is preferred because descriptors can then be internalised using either the corresponding <codeph>operator&gt;&gt;</codeph> or the variants of <codeph>HBufC::NewL()</codeph> or <codeph>HBufC::NewLC()</codeph> that take a read stream.</p> </section> <section><title>Internalising</title> <p>Descriptors can be internalised in one of three ways:</p> <ul><li id="GUID-62935D77-6E8A-572C-AD28-94F1287DBD59"><p>using the <codeph>ReadL()</codeph> member functions of the <codeph>RReadStream</codeph> class.</p> </li> <li id="GUID-4B78612E-1338-5205-95BC-757EB0CD0C00"><p>using the templated stream <codeph>operator&gt;&gt;</codeph> </p> </li> <li id="GUID-02D55084-3194-54E2-BCD7-5609819BCD91"><p>using the variants of <codeph>HBufC::NewL()</codeph> or <codeph>HBufC::NewLC()</codeph> that take a read stream.</p> </li> </ul> <p>The <codeph>ReadL()</codeph> member functions of <codeph>RReadStream</codeph> assume that the stream contains only the content of a descriptor.</p> <p>Note that the specific variant, <codeph>ReadL(TDes&amp; aDes)</codeph>, assumes that the length of data to be read from the stream is the same as the maximum length of the target descriptor.</p> <p>The templated stream <codeph>operator&gt;&gt;</codeph> is implemented by the Store framework to read both the length of the descriptor content and the content itself and assumes that the descriptor was originally externalised using the templated <codeph>operator&lt;&lt;</codeph>.</p> <p>The <codeph>NewLC()</codeph> and <codeph>NewL()</codeph> member functions of <codeph>HBufC</codeph> heap descriptors allocate the heap descriptor before internalising from the stream and also assume that the descriptor was originally externalised using the <codeph>operator&lt;&lt;</codeph>.</p> </section> </conbody></concept>