《Flash ActionScript 3 殿堂之路》读书笔记

 1.

getObjectsUnderPoint()

Returns an array of objects that lie under the specified point and are children (or grandchildren, and so on) of this DisplayObjectContainer instance.

2,

contains()

Determines whether the specified display object is a child of the DisplayObjectContainer instance or the instance itself. The search includes the entire display list including this DisplayObjectContainer instance. Grandchildren, great-grandchildren, and so on each return true.