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<concept id="GUID-CBB00F6A-CBA7-4872-B0A1-A86A863725F5" xml:lang="en"><title>Precompiled resource values available from the Symbian platform</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>The Symbian platform provides a generated resource header file
that contains symbolic IDs to resources in the Symbian platform for
use in your code. The file with the symbolic IDs is the <parmname>avkon.rsg</parmname> file and it is in the <parmname>./epoc32/include</parmname> folder. The file contains commonly used resource structures for
your resource file declarations.</p>
<p>A common example is the <parmname>R_AVKON_SOFTKEYS_OPTIONS_EXIT</parmname> symbolic ID, which maps to the <parmname>CBA</parmname> resource
that results in the softkeys <parmname>Options</parmname> and <parmname>Exit</parmname>. The <parmname>Options</parmname> softkey is bound
to a command that results in the application framework opening the
options menu based on the <parmname>MENU_PANE</parmname> resource.
The <parmname>Exit</parmname> softkey returns the <parmname>EAknSoftkeyExit</parmname> command, which would need to be handled in the appropriate place
for <xref href="GUID-4941C035-C359-4968-9BD5-31F44EE5F810.dita">command
handling</xref> in your application architecture. </p>
<note>
<p>The Symbian platform enumerations are in the <xref href="jar:GUID-759FBC7F-5384-4487-8457-A8D4B76F6AA6.jar!/html/avkon_8hrh.html" format="application/java-archive"><parmname>avkon.hrh</parmname></xref> file, which is in the <parmname>/epoc32/include</parmname> folder. </p>
</note>
<p>In general, you can map the commands returned from the CBA options
by comparing the names of the symbolic IDs to the symbolic names in
the enumerated list.</p>
<p>Other symbolic IDs for other purposes are also available in
the <parmname>avkon.rsg</parmname> file.</p>
<p>When the precompiled resources fit the needs of your application,
you can use them to access already existing resource structures. </p>
<p>For examples of how these symbolic IDs are used, see</p>
<ul>
<li><p><xref href="GUID-A3AF142B-F9DF-43FD-9D3F-788A74D0C575.dita">Using
precompiled CBA button resources</xref></p></li>
</ul>
</conbody></concept>