Creating and Extending Flex 2 Components > Creating Custom Flex Components > Creating Flex Components > About creating components > The Flex class hierarchy

The Flex class hierarchy

Flex is implemented as an ActionScript class hierarchy. That class hierarchy contains component classes, manager classes, data-service classes, and classes for all other Flex features. The following example shows a portion of the class hierarchy for the Flex visual components, such as controls and containers:


Component class hierarchy

NOTE

 

For a complete description of the class hierarchy, see the Adobe Flex 2 Language Reference.

All visual components are derived from the UIComponent ActionScript class. Flex nonvisual components are also implemented as a class hierarchy in ActionScript. The most commonly used nonvisual classes are the Validator, Formatter, and Effect base classes.

You create custom components by extending the Flex class hierarchy using the MXML and ActionScript languages. Components inherit the properties, methods, events, styles, and effects of their superclasses.

Flex 2.01

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