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  PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">
<concept id="GUID-0F8D0399-58CD-4EB6-82DF-75D6BE5B0A84" xml:lang="en"><title>Application
framework concepts</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>The application framework contains a set of libraries and components
provided by the Symbian platform to make common functions available to applications.
Examples of the available functions include: </p>
<ul>
<li><p><xref href="GUID-07D2ED79-90B2-4ABC-A61F-108DAEE21955.dita">application
launching</xref></p></li>
<li><p><xref href="GUID-A9330FEF-C559-4E2B-B064-0151FDADEA8C.dita">event
handling</xref></p></li>
<li><p><xref href="GUID-E111C4E8-1342-4E87-ACB4-5B630AF1501C.dita">internationalization
and localization</xref></p></li>
<li><p><xref href="GUID-E402616A-7ED8-45AC-B836-99C3A3760B33.dita">keyboard</xref> and <xref href="GUID-4D2AA522-82AB-4D1E-9F1E-5C6A35DEF195.dita">pointer</xref> support</p>
</li>
</ul>
<p>All GUI-based applications use the application framework architecture.
You must derive the application classes from base classes provided by AVKON.
For more information on the classes involved in the application framework,
see <xref href="GUID-BDDDF68F-F7C3-43AF-8B6C-C77C701FD2A9.dita">Framework
requirements for GUI applications</xref>. For more
information on the UI, see <xref href="GUID-0F593BE1-1220-4403-B04E-B8E8A9A49701.dita">UI concepts</xref>.</p>
<p>In addition, the following concepts are relevant in the context of the
application framework:</p>
</conbody></concept>