_context _id _parent _refcount _shape _tag addRef clone context create getID getParent getTag getType MgShapeT MgShapeT registerCreator release setContext setParent setTag shape shapec ThisClass Type ~MgShapeT

release() template<class ShapeT, class ContextT = GiContext> void MgShapeT< ShapeT, ContextT >::release ( ) virtual 释放引用计数，为0时销毁对象 实现了 MgObject. 函数调用图: