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<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>