diff --git a/API_GdbModifySurf.cpp b/API_GdbModifySurf.cpp
index 06663d5..6a3702c 100644
--- a/API_GdbModifySurf.cpp
+++ b/API_GdbModifySurf.cpp
@@ -35,6 +35,13 @@ __stdcall EgtExplodeSurface( int nId, int* pnCount)
    return ExeExplodeSurface( nId, pnCount) ;
 }
 
+//-------------------------------------------------------------------------------
+BOOL
+__stdcall EgtApproxSurface( int nId, double dLinTol)
+{
+   return ( ExeApproxSurface( nId, dLinTol) ? TRUE : FALSE) ;
+}
+
 //----------------------------------------------------------------------------
 BOOL
 __stdcall EgtSurfFrAdd( int nId1, int nId2)
@@ -63,6 +70,13 @@ __stdcall EgtSurfFrOffset( int nId, double dDist, int nType)
    return ( ExeSurfFrOffset( nId,  dDist, nType) ? TRUE : FALSE) ;
 }
 
+//----------------------------------------------------------------------------
+int
+__stdcall EgtSurfTmToTriangles( int nId, int* pnCount)
+{
+   return ExeSurfTmToTriangles( nId, pnCount) ;
+}
+
 //----------------------------------------------------------------------------
 BOOL
 __stdcall EgtSurfTmRemoveFacet( int nId, int nFacet)
diff --git a/EgtInterface.rc b/EgtInterface.rc
index bf0a6a3..31ea852 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ