--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/PDK/Source/GUID-DB2E0959-C24E-4E6E-BC6D-064B91BDE662.dita Tue Mar 30 11:56:28 2010 +0100
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->
+<!-- This component and the accompanying materials are made available under the terms of the License
+"Eclipse Public License v1.0" which accompanies this distribution,
+and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->
+<!-- Initial Contributors:
+ Nokia Corporation - initial contribution.
+Contributors:
+-->
+<!DOCTYPE concept
+ PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
+<concept id="GUID-DB2E0959-C24E-4E6E-BC6D-064B91BDE662" xml:lang="en"><title>Checking
+for touch support at runtime</title><shortdesc>The Symbian platform now includes <parmname>AknLayoutUtils::PenEnabled()</parmname> to
+check for touch support at runtime to allow for reduced run-time memory consumption
+if the device does not support touch.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>Typical cases where <parmname>AknLayoutUtils::PenEnabled()</parmname> might
+be useful include:</p>
+<ul>
+<li><p>In the component’s constructor to skip the creation of touch-only component
+controls.</p></li>
+<li><p>In the component’s <parmname>HandleResourceChange</parmname>, create
+touch-only component controls if the layout is switched from a non-touchable
+to a touchable one. Touch-only component controls should not be deleted.</p></li>
+<li><p>In the component’s drawing code.</p></li>
+</ul>
+<note><p><codeph>AknLayoutUtils::PenEnabled()</codeph> is supported from S60
+3rd Edition, FP1, onwards.</p></note>
+<codeblock xml:space="preserve">void CMyAppContainer::ConstructL( const TRect& aRect )
+ {
+ CreateWindowL();
+ SetRect( aRect );
+
+ // If the device supports touch, construct long tap detector
+ if ( AknLayoutUtils::PenEnabled() )
+ {
+ iLongTapDetector = CAknLongTapDetector::NewL( this );
+ }
+ ActivateL();
+ }</codeblock>
+<note><p>You cannot use <codeph>AknLayoutUtils::PenEnabled()</codeph> in <codeph>.rss</codeph> resource
+files.</p></note>
+</conbody></concept>
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