一共按钮数目是120个，并且有同样id号将会作出同样的动作。
There are only120 to go around, and any buttons with the same ID' s show the same actions.
初始化显示和shell后，可以添加任意数目的现有对象，如菜单栏、表、按钮、网格等。
After you have the display and shell initialized, you can add any number of existing objects such as menu bars, tables, buttons, grids, and so on.
该组件通过可配置组合框为用户提供一个按钮，和Checker一样，它支持数目不等的动作和属性。
This component presents a button to the user with a configurable combo box and, like the Checker, supports a variable number of actions and properties.
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