Symbian3/PDK/Source/GUID-CABA0B4D-11E4-5659-B949-C4277FB63804.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Fri, 22 Jan 2010 18:26:19 +0000
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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-CABA0B4D-11E4-5659-B949-C4277FB63804" xml:lang="en"><title>Notifier</title><shortdesc>A notifier is a simple service that allows either a single line
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message (an infoprint) or a simple dialog box to be displayed on the hardware's
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display device. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>It is used for sending (debug) trace messages to the screen and putting
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up debug dialog boxes. It can be used in any environment, including the text
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shell used for development of engine or low level type code. Because it doesn't
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require Uikon it is invaluable for developers who need to work without GUI
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dependencies. </p>
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<p>The dialog box consists of two lines of text and two buttons. The buttons
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each display a single text character and the user is expected to key in one
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of these characters. </p>
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<p>The notifier is a server, managed by the Kernel. The client side creates
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a session through an <codeph>RNotifier</codeph> handle. </p>
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<p> <note/> If a plug-in notifier DLL fails to load successfully, the
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OS will not start. Notifiers are critical system resources which must not
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fail to load correctly. </p>
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</conbody></concept>