1 <?xml version="1.0" encoding="utf-8"?>

     2 <!-- Copyright (c) 2007-2010 Nokia Corporation and/or its subsidiary(-ies) All rights reserved. -->

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     4 "Eclipse Public License v1.0" which accompanies this distribution, 

     5 and is available at the URL "http://www.eclipse.org/legal/epl-v10.html". -->

     6 <!-- Initial Contributors:

     7 	Nokia Corporation - initial contribution.

     8 Contributors: 

     9 -->  <!DOCTYPE concept PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd"><concept id="GUID-F3262DF6-39CA-4E96-AD0E-C1FFDE9B0A61" xml:lang="en"><title>Commonly

    10 used controls</title><prolog><metadata><keywords></keywords></metadata></prolog><conbody>

    11 <p>The Symbian platform provides Avkon controls, which are a convenient

    12 set of UI components designed specifically for devices based on the Symbian

    13 platform.</p>

    14 <p>Commonly used Avkon controls include:</p>

    15 <ul>

    16 <li><p>dialogs </p></li>

    17 <li><p>editors</p></li>

    18 <li><p>forms </p></li>

    19 <li><p>grids</p></li>

    20 <li><p>lists </p></li>

    21 <li><p>notes</p></li>

    22 <li><p>pop-up lists </p></li>

    23 <li><p>queries </p></li>

    24 <li><p>setting pages</p></li>

    25 </ul>

    26 <p>All of the Avkon resources listed above, except dialogs ,queries, and

    27 notes, are non-window-owning controls. This means that they cannot exist on

    28 the screen without being inside another <xref href="GUID-5944FFF1-79C6-4F5E-95C8-F4833AFC64AB.dita">control</xref>.</p>

    29 <note>

    30 <p>Since Avkon UI resources scale automatically according to screen resolution

    31 and orientation, it is recommended that you consider using Avkon or Avkon-derived

    32 components in your application UI as they may require less implementation

    33 effort. Custom <xref href="jar:GUID-35228542-8C95-4849-A73F-2B4F082F0C44.jar!/sdk/doc_source/reference/reference-cpp/Control_Environment/CCoeControlClass.html" format="application/java-archive"><parmname>CCoeControl</parmname></xref>-derived

    34 controls may require additional efforts to support <xref href="GUID-B02C762B-C452-4184-ABEA-4753E6CD47D2.dita">scalability</xref> and <xref href="GUID-A1DBE03F-728E-4F31-BE74-5BDA3906C8DD.dita">themes</xref>.</p>

    35 </note>

    36 </conbody></concept>