Symbian3/SDK/Source/GUID-1BB546C1-2795-55D9-97B6-AC3F6AB79389-GENID-1-8-1-6-1-1-4-1-6-1-7-1.dita
author Dominic Pinkman <Dominic.Pinkman@Nokia.com>
Wed, 31 Mar 2010 11:11:55 +0100
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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-1BB546C1-2795-55D9-97B6-AC3F6AB79389-GENID-1-8-1-6-1-1-4-1-6-1-7-1" xml:lang="en"><title>Controls</title><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>In the Symbian platform UI Control Framework, all UI elements (with a few
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exceptions) are <keyword>controls</keyword>. A control is a rectangular area
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of the screen that may respond to user input events. Buttons, menus, text
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input boxes and application views displaying application-specific data are
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all examples of controls. </p>
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<p>All controls are implemented by deriving from the <codeph>CCoeControl</codeph> class.
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Concrete implementations of controls are provided by a user interface library,
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or by the application programmer. The control framework itself provides no
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concrete controls. </p>
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</conbody></concept>