When an element is selected or deselected, all of its child nodes are set to the same state, which allows for quick selection of entire categories or even the entire tree. For the exercise.
当选择或取消选择一个元素时，它所有的子节点都设置为相同的状态，这可以用来快速选择整个类别甚至整个树。
When an element is selected or deselected, all of its children nodes are set to the same state, which allows for quick selection of entire categories or even the entire tree.
当一个元素被选中或者去掉的时候，它的所有子结点都将被设置为同样的状态，从而我们能够快速地完成整个类别甚至整棵树的全选操作。
Selected style: This style is applied when the widget is set to its selected state.
选择风格：这种风格应用部件时，设置为它的选中状态。
To set a button shape, image or menu item to its selected style, use the "Set Widget(s) to Selected State" action.
要设置按钮的形状，图片或菜单项，其选定的样式，使用“设置窗口小部件（S）以选择国家”的行动。
To set a menu item to its selected style, use the "set Widget (s) to selected State" action.
要设置一个菜单项的选定的样式，使用“设置窗口小部件(S)以选择国家”的行动。
It also includes transient state consisting of context items including the set of currently selected objects as well as the editing tool being used to manipulate objects on the design surface.
并同时包含由内容项目构成的暂时性状态，包括一组目前选取的物件，以及要用在设计介面上处理物件的编辑工具。
It also includes transient state consisting of context items including the set of currently selected objects as well as the editing tool being used to manipulate objects on the design surface.
并同时包含由内容项目构成的暂时性状态，包括一组目前选取的物件，以及要用在设计介面上处理物件的编辑工具。
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