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<concept id="GUID-2C74E932-B1CA-434B-AF96-66D52D689620" xml:lang="en"><title>Optional resource file statements</title><prolog><metadata><keywords/></metadata></prolog><conbody>
<p>The resource file statements listed in the following are optional;
Create resource file statements only for the UI components used by
the application for which the default implementation is not used.</p>
<p>For more information on resource statements for these components,
see:</p>
<ul>
<li><p><xref href="GUID-A4F3738C-CBFD-4151-9132-26FE05966715.dita">CBA buttons</xref></p></li>
<li><p><xref href="GUID-E849C798-07A0-47B3-BDBF-203325062FBD.dita">Menu bar resource statements</xref></p></li>
<li><p><xref href="GUID-B238952B-1691-49F4-B8B9-9F755011A7DD.dita">View
resource statements in the view architecture</xref></p></li>
<li><p><xref href="GUID-CCE6DC36-625C-487C-9AD8-F1BF8E36080A.dita">UI components</xref></p>
<itemgroup>
<p>Building an AVKON-based application UI is a primary choice for
third-party add-on applications that do not need advanced customization.
Such an approach guarantees compatibility across different Series
60 Developer Platform editions, but, in turn, puts some limitations
on the application UI layout imposed by AVKON.  AVKON provides a wide
choice of well-designed and versatile components, but not all of these
are easily modifiable.</p>
<note>
<p>AVKON or AVKON-derived components should be favoured over 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 controls. 
AVKON UI components <xref href="GUID-B02C762B-C452-4184-ABEA-4753E6CD47D2.dita">scale</xref> automatically
according to screen resolution and orientation.</p>
</note>
<ul>
<li><p><xref format="html" href="specs/guides/Dialogs_API_Specification/Dialogs_API_Specification.html" scope="external">Dialogs API</xref></p></li>
<li><p><xref format="html" href="specs/guides/Editors_API_Specification/Editors_API_Specification.html" scope="external">Editors API</xref></p></li>
<li><p><xref format="html" href="specs/guides/Form_API_Specification/Form_API_Specification.html" scope="external">Form API</xref></p></li>
<li><p><xref format="html" href="specs/guides/Grids_API_Specification/Grids_API_Specification.html" scope="external">Grids API</xref></p></li>
<li><p><xref format="html" href="specs/guides/Grids_API_Specification/Grids_API_Specification.html" scope="external">Lists API</xref></p></li>
<li><p><xref format="html" href="specs/guides/Notes_API_Specification/Notes_API_Specification.html" scope="external">Notes API</xref></p></li>
<li><p><xref format="html" href="specs/guides/Setting_Pages_API_Specification/Setting_Pages_API_Specification.html" scope="external">Setting Pages API</xref></p></li>
</ul>
</itemgroup>
</li>
</ul>
</conbody></concept>