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diff --git a/thirdparty/windows/include/coin/ClpConstraint.hpp b/thirdparty/windows/include/coin/ClpConstraint.hpp
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+++ b/thirdparty/windows/include/coin/ClpConstraint.hpp
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+/* $Id: ClpConstraint.hpp 1665 2011-01-04 17:55:54Z lou $ */
+// Copyright (C) 2007, International Business Machines
+// Corporation and others.  All Rights Reserved.
+// This code is licensed under the terms of the Eclipse Public License (EPL).
+
+#ifndef ClpConstraint_H
+#define ClpConstraint_H
+
+
+//#############################################################################
+class ClpSimplex;
+class ClpModel;
+
+/** Constraint Abstract Base Class
+
+Abstract Base Class for describing a constraint or objective function
+
+*/
+class ClpConstraint  {
+
+public:
+
+     ///@name Stuff
+     //@{
+
+     /** Fills gradient.  If Linear then solution may be NULL,
+         also returns true value of function and offset so we can use x not deltaX in constraint
+         If refresh is false then uses last solution
+         Uses model for scaling
+         Returns non-zero if gradient undefined at current solution
+     */
+     virtual int gradient(const ClpSimplex * model,
+                          const double * solution,
+                          double * gradient,
+                          double & functionValue ,
+                          double & offset,
+                          bool useScaling = false,
+                          bool refresh = true) const = 0;
+     /// Constraint function value
+     virtual double functionValue (const ClpSimplex * model,
+                                   const double * solution,
+                                   bool useScaling = false,
+                                   bool refresh = true) const ;
+     /// Resize constraint
+     virtual void resize(int newNumberColumns) = 0;
+     /// Delete columns in  constraint
+     virtual void deleteSome(int numberToDelete, const int * which) = 0;
+     /// Scale constraint
+     virtual void reallyScale(const double * columnScale) = 0;
+     /** Given a zeroed array sets nonlinear columns to 1.
+         Returns number of nonlinear columns
+      */
+     virtual int markNonlinear(char * which) const = 0;
+     /** Given a zeroed array sets possible nonzero coefficients to 1.
+         Returns number of nonzeros
+      */
+     virtual int markNonzero(char * which) const = 0;
+     //@}
+
+
+     ///@name Constructors and destructors
+     //@{
+     /// Default Constructor
+     ClpConstraint();
+
+     /// Copy constructor
+     ClpConstraint(const ClpConstraint &);
+
+     /// Assignment operator
+     ClpConstraint & operator=(const ClpConstraint& rhs);
+
+     /// Destructor
+     virtual ~ClpConstraint ();
+
+     /// Clone
+     virtual ClpConstraint * clone() const = 0;
+
+     //@}
+
+     ///@name Other
+     //@{
+     /// Returns type, 0 linear, 1 nonlinear
+     inline int type() {
+          return type_;
+     }
+     /// Row number (-1 is objective)
+     inline int rowNumber() const {
+          return rowNumber_;
+     }
+
+     /// Number of possible coefficients in gradient
+     virtual int numberCoefficients() const = 0;
+
+     /// Stored constraint function value
+     inline double functionValue () const {
+          return functionValue_;
+     }
+
+     /// Constraint offset
+     inline double offset () const {
+          return offset_;
+     }
+     /// Say we have new primal solution - so may need to recompute
+     virtual void newXValues() {}
+     //@}
+
+     //---------------------------------------------------------------------------
+
+protected:
+     ///@name Protected member data
+     //@{
+     /// Gradient at last evaluation
+     mutable double * lastGradient_;
+     /// Value of non-linear part of constraint
+     mutable double functionValue_;
+     /// Value of offset for constraint
+     mutable double offset_;
+     /// Type of constraint - linear is 1
+     int type_;
+     /// Row number (-1 is objective)
+     int rowNumber_;
+     //@}
+};
+
+#endif