This class represents a PointCurve (coincident) constraint node in the owning Assoc2dConstraintGroup. 

It can be applied between a constrained point and a constrained curve.

Autodesk.AutoCAD.DatabaseServices.ConstraintGroupNode
    Autodesk.AutoCAD.DatabaseServices.GeometricalConstraint
        Autodesk.AutoCAD.DatabaseServices.PointCurveConstraint

Public Class PointCurveConstraint
Inherits GeometricalConstraint

public class PointCurveConstraint : GeometricalConstraint;