API Reference > OdDb Classes > OdDbEvalExpr Class > OdDbEvalExpr Methods > OdDbEvalExpr::graphEvalStart Method
OdDbEvalExpr::graphEvalStart Method
Syntax
C++
virtual void graphEvalStart(bool nodeIsActive);
Parameters 
Description 
bool nodeIsActive 
[in] True if and only if this Node object has been activated. 

Notification function called whenever the Graph object is about to be traversed. 

 

Called by OdDbEvalGraph::evaluate(). 

This function is called before the operation.

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