Symbian3/PDK/Source/GUID-C11AF871-56C8-4EA4-A1E0-E2B23372EF84.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-C11AF871-56C8-4EA4-A1E0-E2B23372EF84" xml:lang="en"><title>Touch
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down and hold</title><prolog><metadata><keywords/></metadata></prolog><conbody>
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<p>Touch down and hold is used, for example, to open the Symbian
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stylus pop-up menu. Applications can use an animation (starts after 0.15 seconds
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from the start of a stylus down event) to indicate that a Touch down and hold
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action has been initiated.</p>
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<p>On the whole, Touch down and hold may be difficult for users to find, and
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therefore its use should be considered carefully. As in the case of task swapping,
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the use of Touch down and hold should aim at being analogous to using a long
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key press on the hardware keys.</p>
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<section id="GUID-F3F82BBF-587D-471E-A2DE-E9248077EE0A"><title>Using
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touch down and hold events in C++ applications</title><p>The API to use for
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receiving touch down and hold events in applications or controls is the <xref href="GUID-92018B6B-3CBB-434D-9E61-F271C67E98E3.dita">Touch UI utilities API</xref>.</p><p>Use
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the class <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classCAknLongTapDetector.html" format="application/java-archive"><codeph>CAknLogTapDetector</codeph></xref> to
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receive touch down and hold events, called long tap events in the API reference.</p><p>Your
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long tap handler must inherit from the class <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classMAknLongTapDetectorCallBack.html" format="application/java-archive"><codeph>MAknLongTapDetectorCallBack</codeph></xref> and implement the <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/classMAknLongTapDetectorCallBack.html#fe6ac5bacc8f58579a53889d524e661f" format="application/java-archive"><codeph>MAknLongTapDetectorCallBack::HandleLongTapEventL()</codeph></xref> call
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back function.</p></section>
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</conbody></concept>