The visual tree also participates in this process.
视觉化树状结构也会参与此程序。
This limit is inadequate for some layouts that have many levels in the visual tree.
对于在可视化树种有许多层的某些布局,此限制还不够。
Applications can call this method to guarantee that the visual tree of an element is complete.
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。
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