代码说明： The component will automatically check for the state of the caps-lock num-lock, and scroll-lock keys, plus, it will also display the current time (all achieved through a private TTimer). Furthermore, the component will also automatically display any application hint, by setting the application's OnHint method to the custom method that is used by the TTimer. 自动显示Caps-lock num-lock scroll-lock键状态和时间的状态栏元件

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