通过键交互和ARIA支持，支持ARIA的浏览器和屏幕阅读器将能够帮助残疾人访问此复合框小部件。

With key interaction and ARIA support, this combo box widget can be accessible to people with disabilities by using ARIA-supported browsers and screen readers.

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图5显示了一个复合框小部件。

Figure 5 shows a combo box widget.

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这个小部件是一个简单的复合程序，允许显示或隐藏(即，折叠或展开)其子元素。

This widget is a simple composite that allows its child to be shown or hidden (i.e., collapsed or expanded).

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