Symbian3/SDK/Source/GUID-3B441CDC-AB7A-4D8D-A595-57C21E1D426C.dita
changeset 7 51a74ef9ed63
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/SDK/Source/GUID-3B441CDC-AB7A-4D8D-A595-57C21E1D426C.dita	Wed Mar 31 11:11:55 2010 +0100
@@ -0,0 +1,48 @@
+<?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-3B441CDC-AB7A-4D8D-A595-57C21E1D426C" xml:lang="en"><title>Foreground
+events</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>The application framework calls <xref href="GUID-92361912-7768-3D2C-835E-BD3EF1366D6D.dita#GUID-92361912-7768-3D2C-835E-BD3EF1366D6D/GUID-71F5C50E-2595-3B8E-850A-6DB0CFBB091D"><apiname>CCoeAppUI::HandleForegroundEventL()</apiname></xref> when
+the application is switched to the foreground or background.</p>
+<p>While the default implementation of this method is empty, it can be,
+for example, used to display messages or pause a game when a focus change
+event occurs.</p>
+<p>An example of such a foreground event implementation is as follows:</p>
+<codeblock id="GUID-ECF10193-AB06-4267-A47F-D5EC2C561D9C" xml:space="preserve">// ------------------------------------------------------------------------------
+// CMyViewAppUi::HandleForegroundEventL(TBool aForeground)
+// This function is called by the  framework when the screen loses or gains focus. 
+// i.e. when it goes to the background or to the foreground. Incoming call 
+// softnote is an example.
+// This event applies to the entire application, all views.
+// ------------------------------------------------------------------------------
+//
+void CMyViewAppUi::HandleForegroundEventL(TBool aForeground)
+    {
+    if( aForeground == TRUE )
+        {
+        iEikonEnv-&gt;InfoMsg( _L( "Foreground true" ) );
+        }
+    else
+        {
+        iEikonEnv-&gt;InfoMsg( _L( "Foreground false" ) );
+        }
+    }
+</codeblock>
+<p>The <parmname>aForeground</parmname> parameter is true if the application
+is switched to the foreground (is visible) and false if the application has
+gone to the background.</p>
+<note>
+<p>The above code snippet uses the <i>MyView</i> example application provided
+in the <i> Platform Application Views</i> package available from <xref href="http://www.forum.nokia.com/info/sw.nokia.com/id/226649f9-4118-4c8a-92e6-6d72fb251ae1/S60_Platform_Application_Views_v2_1_en.zip.html" scope="external">Forum
+Nokia</xref> . </p>
+</note>
+</conbody></concept>
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