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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.dita">Dialogs

API</xref></p></li>

<li><p><xref format="html" href="specs/guides/Editors_API_Specification/Editors_API_Specification.html.dita">Editors

API</xref></p></li>

<li><p><xref format="html" href="specs/guides/Form_API_Specification/Form_API_Specification.html.dita">Form

API</xref></p></li>

<li><p><xref format="html" href="specs/guides/Grids_API_Specification/Grids_API_Specification.html.dita">Grids

API</xref></p></li>

<li><p><xref format="html" href="specs/guides/Grids_API_Specification/Grids_API_Specification.html.dita">Lists

API</xref></p></li>

<li><p><xref format="html" href="specs/guides/Notes_API_Specification/Notes_API_Specification.html.dita">Notes

API</xref></p></li>

<li><p><xref format="html" href="specs/guides/Setting_Pages_API_Specification/Setting_Pages_API_Specification.html.dita">Setting

Pages API</xref></p></li>

</ul>

</itemgroup>

</li>

</ul>

</conbody></concept>