addRef clone copy equals getType isKindOf operator!= operator= operator== release release_pointer ~MgObject

copy() virtual void MgObject::copy ( const MgObject &  src ) pure virtual 复制对象数据 在 MgBaseShape, MgShapes, MgShapeDoc, MgShape, MgRecordShape , 以及 MgLayer 内被实现. 这是这个函数的调用关系图: