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.
本文提出了主动数据库中复合事件的构造形式，对于复合事件的实现及探测，提出了基于“扩展语义树”处理的方法。
In this paper, we present a constitutive form of composite events in Active Database. For implementing and detecting the composite event a method based on the "extended semantic tree" is proposed.
对于组成成分可能具有预期鼠标行为的复合控件，处理接近根的事件并且不由源方向的下一代子级处理该事件可能并不正确。
Handling the event near the root and not handling by a child further toward the source may not be appropriate for composited controls, where the compositing pieces might have expected mouse behaviors.
对于组成成分可能具有预期鼠标行为的复合控件，处理接近根的事件并且由源方向的下一代子级处理该事件可能并不正确。
Handling the event near the root and handling it by a child further toward the source may not be appropriate for composited controls, where the compositing pieces might have expected mouse behaviors.
通常使用预览事件的一种情形是复合控件的输入事件处理。
One scenario where Preview events are commonly used is for composited control handling of input events.
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.
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.
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