Behaviors

Styles give you a practical way to reuse groups of property settings. They're a great first step that can help you build consistent, well-organized interfaces—but they're also broadly limited.

The problem is that property settings are only a small part of the user-interface infrastructure in a typical application. Even the most basic program usually needs reams of user-interface code that has nothing to do with the application's functionality. In many programs, the code that's used for UI tasks (such as driving animations, powering slick effects, maintaining user-interface state, and supporting user-interface features like dragging, zooming, and docking) far outweighs the business code in both size and complexity. Much of this code ...

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