借由处理逻辑树状结构，传回指定之物件的直接子物件集合。
Returns the collection of immediate child objects of the specified object, by processing the logical tree.
在事件路由堆叠中，新增开始分枝成两个逻辑树状结构的最上层项目。
The source for the top-most element on the event route stack at which two logical trees diverge.
虽然这在大多数情况下并不需要，不过资深控制项作者可选择覆写逻辑树状结构。
Although it is not necessary in most cases, advanced control authors have the option to override the logical tree.
物件参考是从根项目开始查阅逻辑树状结构取得，或由一般名称参考取得，并不是来自样板。
Object references obtained by walking the logical tree from the root, or by typical name references, do not come from a template.
因此，如果您取得来自样板之项目的物件参考，可能会发现明显逻辑树状结构并未到达页面根项目。
Therefore, if you obtain an object reference to an element that came from a template, you may find that the apparent logical tree does not reach to the page root.
如果在呼叫项目上找不到资源，则会改以搜寻逻辑树状结构内的父项目，接著搜寻应用程式、布景主题，最后则会搜寻系统资源。
If the resource is not found on the calling element, the parent element in the logical tree is searched next, then the application, then themes, and finally system resources.
如果在呼叫项目上找不到资源，则会改以搜寻逻辑树状结构内的父项目，接著搜寻应用程式、布景主题，最后则会搜寻系统资源。
If the resource is not found on the calling element, the parent element in the logical tree is searched next, then the application, then themes, and finally system resources.
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