Symbian3/PDK/Source/GUID-F2397B5A-0700-46D5-8E07-CBB9F769DA01.dita
changeset 1 25a17d01db0c
child 3 46218c8b8afa
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Symbian3/PDK/Source/GUID-F2397B5A-0700-46D5-8E07-CBB9F769DA01.dita	Fri Jan 22 18:26:19 2010 +0000
@@ -0,0 +1,46 @@
+<?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-F2397B5A-0700-46D5-8E07-CBB9F769DA01" xml:lang="en"><title>Getting
+user selection from the choice list</title><prolog><metadata><keywords/></metadata></prolog><conbody>
+<p>Every time the choice list's status changes, e.g. when the user opens or
+closed the list or selects an item from the list, the client application is
+informed through the <codeph>MCoeControlObserver</codeph> interface. </p>
+<p>Notifications are received by the <codeph>HandleControlEventL</codeph> callback
+function in the class <codeph>MCoeControlObserver</codeph>. The event is <codeph>EEventStateChanged</codeph>.</p>
+<p>After receiving the event, the client application can use the choice list's <codeph>SelectedIndex</codeph> method
+to request if the selection has changed. </p>
+<codeblock xml:space="preserve">void CMyAppContainer::HandleControlEventL( CCoeControl* aControl,
+                                                  TCoeEvent aEventType )
+    {
+
+     if ( aControl == iChoiceList )
+        {
+        switch ( aEventType )
+            {
+            case EEventStateChanged:
+                {
+                TInt newSelection = iChoiceList-&gt;SelectedIndex();
+                if ( iSelection != newSelection )
+                    {
+                    // selected item changed
+                    iSelection = newSelection;
+                    }
+                }
+                break;
+                    
+            default:
+                break;
+            }
+        }
+    }
+</codeblock>
+</conbody></concept>
\ No newline at end of file