diff -r 751a14b992f2 -r bfbdded3763a lemon/mip_cplex.h
--- a/lemon/mip_cplex.h	Fri Feb 16 15:57:48 2007 +0000
+++ b/lemon/mip_cplex.h	Fri Feb 16 19:11:31 2007 +0000
@@ -47,13 +47,13 @@
     
   protected:
   
-    virtual ColTypes _colType(int col);
+    virtual ColTypes _colType(int col) const;
     virtual void _colType(int col, ColTypes col_type);
     
     virtual LpCplex::SolveExitStatus _solve();
-    virtual LpCplex::SolutionStatus _getMipStatus();
-    virtual ParentLp::Value _getPrimal(int i);
-    virtual ParentLp::Value _getPrimalValue();
+    virtual LpCplex::SolutionStatus _getMipStatus() const;
+    virtual ParentLp::Value _getPrimal(int i) const;
+    virtual ParentLp::Value _getPrimalValue() const;
   };
 
 } //END OF NAMESPACE LEMON