Click on the notification and it will launch the Extension Manager to install new updates.
点击通知，它就会载入扩展管理器来安装新的更新。
Select the Notification Service entry from the data grid, and click the Configure button, as shown in figure 6 (see larger image).
从数据窗格中选择Notification Service项，单击Configure按钮，如图6所示(参见大图)。
Not only does ButtonWithCallbacks handle behaviors essential to buttons (like clicking), it also handles notification of click events by invoking the callback functions.
ButtonWithCallbacks不仅处理按钮的一些本质行为(比如单击)，它同时还通过调用回调函数处理单击事件的通知。
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