_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

addRef() template<class ShapeT, class ContextT = GiContext> void MgShapeT< ShapeT, ContextT >::addRef ( ) virtual 添加引用计数 实现了 MgObject. 函数调用图: