The UI visible in Figures 1, 2, and 3 is a canvas container that holds three user interface components: the table and two menu buttons.

在图 1、2 和 3 中可见的 UI 是一个画布容器，它们包含 3 个用户界面元素：表和两个菜单按钮。

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We add the table and two menu buttons to the canvas container in the createChildren function (Listing 11), which overrides the same function in the base class.

我们在createchildren函数中将表和两个菜单按钮添加到画布容器中(清单11)，该函数将覆盖基类中的相同函数。

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When a container is resized so that a toolbar's items are clipped, ext JS automatically handles this overflow by creating a menu of the extra toolbar items.

当容器缩放导致工具栏项目切除时，Ext JS通过创建额外工具栏项目菜单来自动处理这种溢出。

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