Symbian3/PDK/Source/GUID-0F1CB874-391F-5D44-B960-517E447DC712.dita
author Graeme Price <GRAEME.PRICE@NOKIA.COM>
Fri, 15 Oct 2010 14:32:18 +0100
changeset 15 307f4279f433
parent 14 578be2adaf3e
permissions -rw-r--r--
Initial contribution of the Adaptation Documentation.
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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-0F1CB874-391F-5D44-B960-517E447DC712" xml:lang="en"><title>Accessing
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the Running Applications</title><shortdesc>Applications running on a device are known as tasks. The <codeph>TApaTaskList</codeph> class
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is used to access applications running on a device, where each task can be
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an instance of the <codeph>TApaTask</codeph> class, which is used to manipulate
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or query tasks. </shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
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<section id="GUID-991C9C7B-42B7-5357-B09B-C8A0F59716B0"><title>Finding an
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application by its UID</title> <p>The following example code shows how to
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find or end a running application that is, a task by its UID using the <xref href="GUID-E1A1806C-8757-35DF-A4FB-AE3C63DED364.dita"><apiname>TApaTaskList</apiname></xref> and <xref href="GUID-851055CF-D5E6-34EA-8D4B-53FC50D90C24.dita"><apiname>TApaTask</apiname></xref> classes. </p> <codeblock id="GUID-C85440FD-57E3-5CB6-88A2-6F2551B37EF7" xml:space="preserve">// Assign UID of the application to a constant, to find the application by its UID
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const TUid KMyAppUid = {0x10009e9f};
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// Creates an instance of a TApaTaskList taking reference to a window server session.
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//    TApaTaskList allows access to all tasks running on the device. 
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TApaTaskList taskList(CCoeEnv::Static()-&gt;WsSession());
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// Creates a TApaTask instance that allows us to find out things about the task in question, for example: send a
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// key-stroke to it, abort or end the task.              
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TApaTask task = taskList.FindApp(KMyAppUid);
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// Checks whether the specified task exists on the device.          
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if (task.Exists())
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    {
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    task.EndTask(); // Ends the task
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    }</codeblock> </section>
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<section id="GUID-D785BAD1-5071-5766-89A7-26E925826B9F"><title>Bringing an
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application to the foreground</title> <p>The following code example shows
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how to find an application by its name and then bring it to the foreground. </p> <codeblock id="GUID-84318E73-F144-5031-853B-971E2257D0D5" xml:space="preserve">_LIT(KAppName, "myApp");
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TApaTaskList taskList(CCoeEnv::Static()-&gt;WsSession());
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TApaTask task = taskList.FindApp(KAppName);
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if (task.Exists())
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    {
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    task.BringToForeground();
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    }</codeblock> </section>
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</conbody></concept>