Symbian3/PDK/Source/GUID-0970A970-6E56-556C-B032-B7EAF8ABBBA6.dita
changeset 1 25a17d01db0c
child 3 46218c8b8afa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/PDK/Source/GUID-0970A970-6E56-556C-B032-B7EAF8ABBBA6.dita	Fri Jan 22 18:26:19 2010 +0000
@@ -0,0 +1,33 @@
+<?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-0970A970-6E56-556C-B032-B7EAF8ABBBA6" xml:lang="en"><title>How
+to use CleanupReleasePushL()</title><shortdesc><codeph>CleanupReleasePushL()</codeph> pushes a <codeph>TCleanupItem</codeph> onto
+the cleanup stack ready for <codeph>CleanupStack::PopAndDestroy()</codeph> to
+release.</shortdesc><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>The <codeph>CleanupReleasePushL()</codeph> templated function constructs
+and pushes a <codeph>TCleanupItem</codeph> onto the cleanup stack. When <codeph>CleanupStack::PopAndDestroy()</codeph> is
+called, the <codeph>Release()</codeph> member function of the object encapsulated
+by the <codeph>TCleanupItem</codeph> is called.</p>
+<codeblock id="GUID-5CBFFD7F-68B3-55E5-9518-2A2899710AAA" xml:space="preserve">...
+RTestThree three;
+CleanupReleasePushL(three);
+...
+CleanupStack::PopAndDestroy();
+...
+</codeblock>
+<p>The <codeph>TCleanupItem</codeph> object encapsulates a reference to the <codeph>RTestThree</codeph> object;
+the cleanup operation is the static function <codeph>Release()</codeph> of
+the templated class <codeph>CleanupRelease&lt;class T&gt;</codeph>. This is implemented
+by simply calling the <codeph>Release()</codeph> member function of <codeph>RTestThree</codeph>.
+This means that <codeph>RTestThree</codeph> must define or inherit a member
+function <codeph>Release()</codeph> which performs whatever clean up is required.</p>
+</conbody></concept>
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