要添加面板，你可以从窗口菜单选择它，并且可以将它锁定到你想要的任何地方。

To add a panel, select it from the Window menu and dock it wherever you want.

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您将各个按钮同时添加到面板中和可清除项的实例列表中，这个列表将用于一个侦听器之中。

You add each button both to the panel and to the instance list of clearable items, which you'll use in one of the listeners.

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唯一不同的是它还将显示一个加号按钮，用来将当前所选择的功能添加到面板上。

One difference is that it will display a plus button which can be used to add the currently selected action to the panel.

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