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Chapter 7. Working with Events > Using Custom Events
7.5. Using Custom Events
You use custom events to communicate information and data between application components. As I described previously, Flex applications are built with a modular architecture, with functionality divided between multiple components. When a component needs to share information with the rest of the application, it does so by dispatching an event.
The following MXML component displays three choices of Small, Medium, and Large in a group of RadioButton components:
