diff --git a/API_GdbCreateCurve.cpp b/API_GdbCreateCurve.cpp
index 3aa4720..37ad491 100644
--- a/API_GdbCreateCurve.cpp
+++ b/API_GdbCreateCurve.cpp
@@ -212,9 +212,8 @@ __stdcall EgtCreateCurveCompo( int nParentId, int nNumId, const int nIds[], BOOL
 {
    INTVECTOR vIds ;
    vIds.reserve( nNumId) ;
-   for ( int i = 0 ; i < nNumId ; ++i) {
+   for ( int i = 0 ; i < nNumId ; ++i)
       vIds.push_back( nIds[i]) ;
-   }
    return ExeCreateCurveCompo( nParentId, vIds, ( bErase != FALSE)) ;
 }
 
diff --git a/API_GdbModify.cpp b/API_GdbModify.cpp
index 4edf35f..a88970a 100644
--- a/API_GdbModify.cpp
+++ b/API_GdbModify.cpp
@@ -41,6 +41,17 @@ __stdcall EgtChangeVectorBase( int nId, const double ptB[3], int nRefType)
    return ( ExeChangeVectorBase( nId, ptB, nRefType) ? TRUE : FALSE) ;
 }
 
+//----------------------------------------------------------------------------
+BOOL
+__stdcall EgtInvertVector( int nNumId, const int nIds[])
+{
+   INTVECTOR vIds ;
+   vIds.reserve( nNumId) ;
+   for ( int i = 0 ; i < nNumId ; ++i)
+      vIds.push_back( nIds[i]) ;
+   return ( ExeInvertVector( vIds) ? TRUE : FALSE) ;
+}
+
 //-------------------------------------------------------------------------------
 BOOL
 __stdcall EgtModifyText( int nId, const wchar_t* wsNewText)
diff --git a/API_GdbModifyCurve.cpp b/API_GdbModifyCurve.cpp
index 2e9618f..4509320 100644
--- a/API_GdbModifyCurve.cpp
+++ b/API_GdbModifyCurve.cpp
@@ -21,10 +21,12 @@ using namespace std ;
 
 //----------------------------------------------------------------------------
 BOOL
-__stdcall EgtInvertCurve( int nId)
+__stdcall EgtInvertCurve( int nNumId, const int nIds[])
 {
    INTVECTOR vIds ;
-   vIds.push_back( nId) ;
+   vIds.reserve( nNumId) ;
+   for ( int i = 0 ; i < nNumId ; ++i)
+      vIds.push_back( nIds[i]) ;
    return ( ExeInvertCurve( vIds) ? TRUE : FALSE) ;
 }
 
diff --git a/API_GeomDB.cpp b/API_GeomDB.cpp
index adecb39..0824914 100644
--- a/API_GeomDB.cpp
+++ b/API_GeomDB.cpp
@@ -28,10 +28,10 @@ __stdcall EgtInitContext( void)
 }
 
 //-----------------------------------------------------------------------------
-int
+BOOL
 __stdcall EgtDeleteContext( int nGseCtx)
 {
-   return ExeDeleteContext( nGseCtx) ;
+   return ( ExeDeleteContext( nGseCtx) ? TRUE : FALSE) ;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/EgtInterface.rc b/EgtInterface.rc
index d01c2ac..571854f 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ