Symbian3/PDK/Source/GUID-4D5B0B16-329F-5932-995D-DB43E6641EF9.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Fri, 22 Jan 2010 18:26:19 +0000
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permissions -rw-r--r--
Addition of the PDK content and example code for Documentation_content according to Feature bug 1607 and bug 1608
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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-4D5B0B16-329F-5932-995D-DB43E6641EF9" xml:lang="en"><title>UID
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manipulation classes</title><shortdesc>Describes the classes that provide the mechanism for manipulating
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UIDs in programs.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>A UID is a globally unique identifier consisting of a 32-bit number. Symbian
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platform makes extensive use of UIDs to provide lightweight identification
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of file types.</p>
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<p>To guarantee uniqueness, all UIDs are assigned to developers centrally
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by Symbian. For testing and development, a well known range of public UIDs
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can be used, but these must not be used for general release. To generate UIDs
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for use in programs, developers must contact Symbian. </p>
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<p>The <codeph>TUid</codeph>, <codeph>TUidType</codeph> and <codeph>TCheckedUid</codeph> classes
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provide the mechanism for creating and manipulating (e.g. comparing) UIDs
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within programs.</p>
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</conbody></concept>