Set the Handled parameter to true if appearance settings are completely processed by your code. Assign false if you want to keep the default processing code. Note that in this case, the default processing code can override your changes.
To learn which item types may present as appearance items, see the following table:
Provides access to a LayoutItemTemplateContainer, LayoutGroupTemplateContainer or TabbedGroupTemplateContainer when it's processed by the WebLayoutManager and when the AppearanceController.Refresh method is invoked. To access a container and its control, use the adapter's Data property.
Provides access to a XAFLayoutItemInfo object representing a layout item or group when it's created by the WinLayoutManager and when the AppearanceController.Refresh method is invoked. To access the XAFLayoutItemInfo object, use the adapter's Data property.