Symbian3/PDK/Source/GUID-AF408E56-D2CB-557C-9D04-C6F7CE1A5424.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Tue, 30 Mar 2010 11:56:28 +0100
changeset 5 f345bda72bc4
parent 3 46218c8b8afa
child 14 578be2adaf3e
permissions -rw-r--r--
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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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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<?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. -->
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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<!-- 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". -->
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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<!-- Initial Contributors:
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    Nokia Corporation - initial contribution.
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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Contributors: 
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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-->
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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<!DOCTYPE concept
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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
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<concept xml:lang="en" id="GUID-AF408E56-D2CB-557C-9D04-C6F7CE1A5424"><title>How to store and restore text</title><prolog><metadata><keywords/></metadata></prolog><conbody><section><title>Storing text and its formatting</title> <p><codeph>theFs</codeph> represents a session with the file server.</p> <codeblock id="GUID-C99E3E76-4464-519F-9DDC-744E8AC31EEE" xml:space="preserve">RFs theFs;
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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CFileStore* theStore;
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TParse fileStoreName;
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TBufC&lt;28&gt; name(_L("C:\\Documents\\richtxt.dat"));
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TStreamId streamId;</codeblock> <p>A session with the file server must be opened before file-related operations are carried out. Use <xref href="GUID-E263C747-946F-35AA-9F1D-41833BD350FC.dita#GUID-E263C747-946F-35AA-9F1D-41833BD350FC/GUID-34CED17B-226B-303F-A76A-57EABC04EC94"><apiname>RFs::Connect()</apiname></xref> to open a session with the file server.</p> <p>Call <codeph>StoreL()</codeph> on the <xref href="GUID-39945DA4-B362-3DF6-BF9E-DD079EEA7934.dita"><apiname>CRichText</apiname></xref> object to externalise the text object to a <xref href="GUID-9CBA8AB1-5BFC-3719-82AF-22A9BD93C306.dita"><apiname>CFileStore</apiname></xref>. The stream in which the text is stored is identified by its ID. This will later be used to restore the rich text.</p> <p>Call <codeph>Close()</codeph> on the <xref href="GUID-E263C747-946F-35AA-9F1D-41833BD350FC.dita"><apiname>RFs</apiname></xref> object to close the file as well as the file server session.</p> <codeblock id="GUID-6F01639A-012D-5258-813F-25BB465E3603" xml:space="preserve">// Store text to a file store
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theFs.Connect();
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theFs.Parse(name,fileStoreName);
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theStore=CDirectFileStore::ReplaceLC
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    (theFs,fileStoreName.FullName(),EFileRead|EFileWrite);
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theStore-&gt;SetTypeL(KDirectFileStoreLayout);
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// externalize the rich text
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streamId=iRichText-&gt;StoreL(*theStore); // Store and get ID
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CleanupStack::PopAndDestroy(); // pop and destroy store
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theFs.Close();</codeblock> </section> <section><title>Restoring rich text</title> <p>The following example restores the text object by calling <codeph>RestoreL()</codeph> on the <xref href="GUID-39945DA4-B362-3DF6-BF9E-DD079EEA7934.dita"><apiname>CRichText</apiname></xref> object, specifying the file store and the ID of the stream in which the rich text is stored.</p> <p>The file is opened for reading only.</p> <codeblock id="GUID-5EE0AC49-32B0-5BC3-826E-29FC7006F7CA" xml:space="preserve">// Restore text from file store
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theFs.Connect();
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theFs.Parse(name,fileStoreName);theStore=CDirectFileStore::OpenLC
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    (theFs,fileStoreName.FullName(),EFileRead|EFileShareReadersOnly);
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if (theStore-&gt;Type()[0]!=KDirectFileStoreLayout)
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    User::Leave(KErrUnknown);
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 // internalize from the store
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RichText-&gt;RestoreL(*theStore,streamId);
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CleanupStack::PopAndDestroy(); // pop and destroy store
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theFs.Close();</codeblock> </section> </conbody></concept>