You use visual components to build Adobe® Flex®applications. Visual components (often referred to as components for brevity) have a flexible set of characteristics that let you control and configure them as necessary to meet your application's requirements.

• About visual components
• Class hierarchy for visual components
• Using the UIComponent class
• Sizing visual components
• Handling events
• Applying styles
• Applying behaviors
• Applying skins
• Changing the appearance of a component at run time
• Extending components