AcRxObject AcGiDrawable AcHeapOperators AcDbObject AcDbEvalExpr AcDbEvalConnectable
class AcDbEvalExpr : public AcDbObject;
dbeval.h
This class represents a single node in an AcDbEvalGraph. The node represents an action (or expression). The owning graph calls the node's evaluate() method when visiting the node during a traversal of the graph from within the graph's evaluate() method.