author | Dominic Pinkman <Dominic.Pinkman@Nokia.com> |
Thu, 11 Mar 2010 15:24:26 +0000 | |
changeset 2 | ebc84c812384 |
parent 0 | 89d6a7a84779 |
permissions | -rw-r--r-- |
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Initial contribution of Documentation_content according to Feature bug 1266 bug 1268 bug 1269 bug 1270 bug 1372 bug 1374 bug 1375 bug 1379 bug 1380 bug 1381 bug 1382 bug 1383 bug 1385
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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-3B441CDC-AB7A-4D8D-A595-57C21E1D426C" xml:lang="en"><title>Foreground |
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events</title><prolog><metadata><keywords/></metadata></prolog><conbody> |
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<p>The application framework calls <xref href="jar:GUID-35228542-8C95-4849-A73F-2B4F082F0C44.jar!/sdk/doc_source/reference/reference-cpp/Control_Environment/CCoeAppUiClass.html#%3a%3aCCoeAppUi%3a%3aHandleForegroundEventL%28TBool%29" format="application/java-archive"><parmname>CCoeAppUI::HandleForegroundEventL()</parmname></xref> when the application |
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is switched to the foreground or background.</p> |
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<p>While the default implementation of this method is empty, it can be, |
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for example, used to display messages or pause a game when a focus change |
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event occurs.</p> |
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<p>An example of such a foreground event implementation is as follows:</p> |
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<codeblock id="GUID-ECF10193-AB06-4267-A47F-D5EC2C561D9C" xml:space="preserve">// ------------------------------------------------------------------------------ |
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// CMyViewAppUi::HandleForegroundEventL(TBool aForeground) |
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// This function is called by the framework when the screen loses or gains focus. |
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// i.e. when it goes to the background or to the foreground. Incoming call |
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// softnote is an example. |
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// This event applies to the entire application, all views. |
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// ------------------------------------------------------------------------------ |
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// |
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void CMyViewAppUi::HandleForegroundEventL(TBool aForeground) |
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{ |
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if( aForeground == TRUE ) |
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{ |
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iEikonEnv->InfoMsg( _L( "Foreground true" ) ); |
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} |
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else |
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{ |
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iEikonEnv->InfoMsg( _L( "Foreground false" ) ); |
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} |
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} |
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</codeblock> |
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<p>The <parmname>aForeground</parmname> parameter is true if the application |
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is switched to the foreground (is visible) and false if the application has |
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gone to the background</p> |
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<note> |
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<p>The above code snippet uses the <i>MyView</i> example application provided |
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in the <i>S60 Platform: Platform Application Views</i> package available from <xref href="http://www.forum.nokia.com/info/sw.nokia.com/id/9c5f21fd-2162-42da-aaf6-17a59b943475/S60_Platform_Application_Views_v2_0_en.zip.html" scope="external">Forum |
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Nokia</xref> . </p> |
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</note> |
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</conbody></concept> |