Most of the user interface components in Flex can handle user events.
Flex 中的大多数用户界面组件都可以处理用户事件。
TreeGrid is in charge of displaying the data and handling user events only.
TreeGrid负责显示数据,且只处理用户事件。
The setup of our widget is now complete, and the program is ready to receive user events.
现在我们的部件已经设置完成,并且程序准备接收用户事件。
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