视觉化树状结构也会参与此程序。
旧的视觉化树状结构已移除。
应用程序可以呼叫这个方法以确保某个项目的视觉化树状结构已完成。
Applications can call this method to guarantee that the visual tree of an element is complete.
您可以列举视觉化树状结构中，所有在其几何中包含指定之座标值的视觉物件。
You can enumerate all visual objects in a visual tree whose geometry contains a specified coordinate value.
此外，如果视觉化树状结构的变更强制更新复合场景图形，也会呼叫事件处理常式方法。
In addition, if changes to the visual tree force updates to the composition scene graph, your event handler method is also called.
此外，如果变更视觉化树状结构会强制更新复合树状结构，则也会呼叫您的事件处理常式。
In addition, if changes to the visual tree force updates to the composition tree, your event handler is also called.
点击测试结果回呼方法定义在视觉化树状结构的特定视觉物件上识别到点击测试时，您会执行的动作。
A hit test results callback method defines the actions that you perform when a hit test is identified on a particular visual object in the visual tree.
这项功能的实际用途是可以将不同的视觉化树状结构(装饰项)重叠在控制项呈现透过其样板建立的视觉化树状目录上。
What the feature actually does is to overlay a different visual tree (an adorner) on top of the visual tree as created by a control's rendering through its template.
例如，如果您尝试取得某个类别的视觉化特性，但是该类别虽已建构完成却尚未附加至树状结构。
An example is if you are attempting to get the visual characteristics of a class that was constructed but not yet attached to a tree.
例如，如果您尝试取得某个类别的视觉化特性，但是该类别虽已建构完成却尚未附加至树状结构。
An example is if you are attempting to get the visual characteristics of a class that was constructed but not yet attached to a tree.
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