使用者介面应用程序中的一些常见事件范例，像是利用使用者动作(例如按一下按钮)执行程序码区段。

Some common examples of events are found in user interface applications where a user action such as clicking a button causes a segment of code to execute.

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为确认回呼事件是来自预期的使用者介面(UI)，您可以验证回呼。

To ensure that callback events originate from the expected user interface (UI), you can validate callbacks.

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启用与使用者介面互动的背景工作，透过使用者介面执行绪上引发的事件来沟通。

Enables background tasks that interact with the user interface, communicating via events raised on the user-interface thread.

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