API Reference > Other Classes > OdFdFieldEvaluator Class
OdFdFieldEvaluator Class
OdFdFieldEvaluator
Syntax
C++
class OdFdFieldEvaluator : public OdRxObject;

FdField.h

This class is an abstract base class that defines the field evaluator interface.

Applications implement evaluators for fields by deriving from this class. The evaluator object instantiated from this class is obtained from the field evaluator loader using the evaluator ID stored in the field. An evaluator class can be implemented for each type of field, or a single evaluator class can support multiple types of fields.

 
Name 
Description 
 
This function is called by the frame framework to compile a field when the field code is changed. 
 
This function is called by the field framework when the field needs to be evaluated. 
 
This is the overview for the evaluatorId method overload. 
 
This function is called by the field framework when a field is queried to get the evaluated field value as a string. 
 
This function is called by the field framework calls this method to initialize a new field. 
 
This is ODRX_DECLARE_MEMBERS, a member of class OdFdFieldEvaluator. 
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