author | Dominic Pinkman <Dominic.Pinkman@Nokia.com> |
Fri, 22 Jan 2010 18:26:19 +0000 | |
changeset 1 | 25a17d01db0c |
child 5 | f345bda72bc4 |
permissions | -rw-r--r-- |
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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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--> <!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"><concept id="GUID-F3EE1000-71A6-4D48-A30B-3D2357BF20FB" xml:lang="en"><title>Generic |
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button API</title><shortdesc>The Generic button API is used for enabling touch support for buttons.</shortdesc><prolog><metadata><keywords></keywords></metadata></prolog><conbody> |
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<p>An Avkon button is a generic button component specifically designed for |
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touch support. The generic button component (<xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknButton.html" format="application/java-archive"><codeph>CAknButton</codeph></xref>, defined in aknbutton.h) |
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is used, for example, in a toolbar and a status pane. The button can contain |
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text, an image, or both. </p> |
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<p>Buttons can have multiple states, and each of the states can have three |
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different states according to user actions. The possible user-action states |
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for the button states are:</p> |
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<ul> |
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<li><p>Normal</p></li> |
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<li><p>Pressed down</p></li> |
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<li><p>Dimmed</p></li> |
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</ul> |
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<p>By default, the button has a frame, it responds to tap (press) event, has |
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a latchable view in the pressed-down state, and has horizontally and vertically |
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aligned text in it. Some default behavior can be changed with button flags |
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or with the help of member functions. </p> |
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<p>To observe the buttons in your application, use the <codeph>MCoeControlObserver</codeph> observer |
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interface.</p> |
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<fig id="GUID-EEC0C576-8EEC-481E-817F-6E137E4F6A7D"> |
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<title>Generic button used in a toolbar</title> |
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<image href="GUID-ED823C5E-A59B-476A-BF88-0FCBA5D35FED_d0e49091_href.png" scale="50" placement="inline"></image> |
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</fig> |
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<note><p> The Generic button API is used for creating buttons that are displayed |
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as parts of container components, such as a toolbar. It is not used for creating |
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CBA buttons displayed in the control pane at the bottom of the device screen. |
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The API for creating CBA buttons is the Buttons |
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API.</p></note> |
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<p>For look and feel guidelines on the generic button component as part of |
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a toolbar, see the <xref href="GUID-EB212C35-5416-4CA7-8091-61B45D78E220.dita">toolbar |
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UI component description</xref>.</p> |
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<p>For information on using the API, see <xref href="GUID-97712509-84AD-462F-8FFB-E1E6D8278938.dita">Enabling |
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touch support for buttons</xref>.</p> |
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<p>For the Generic button API classes and header files, see Classes and Definitions.</p> |
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<section><title>Constraints</title><p>This API is valid for all platforms |
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running on Symbian OS 9.3 or later.</p></section> |
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<section><title>Emulator support</title><p>This API is supported in the WINS/WINSCW |
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emulator environment, with the following exception:</p><ul> |
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<li><p>Tactile feedback is not supported.</p></li> |
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</ul></section> |
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</conbody></concept> |