diff --git a/API_MachMgr.cpp b/API_MachMgr.cpp
index 18c5a29..a4f8aa5 100644
--- a/API_MachMgr.cpp
+++ b/API_MachMgr.cpp
@@ -336,9 +336,9 @@ __stdcall EgtModifyRawPart( int nRawId, const double ptOrig[3],
 //-----------------------------------------------------------------------------
 BOOL
 __stdcall EgtModifyRawPart2( int nRawId, int nCrvId,
-                             double dOverMat, double dZmin, double dHeight, const int vCol[4])
+                             double dOverMat, double dHeight, const int vCol[4])
 {
-   return ( ExeModifyRawPart( nRawId, nCrvId, dOverMat, dZmin, dHeight, vCol) ? TRUE : FALSE) ;
+   return ( ExeModifyRawPart( nRawId, nCrvId, dOverMat, dHeight, vCol) ? TRUE : FALSE) ;
 }
 
 //-----------------------------------------------------------------------------
@@ -1446,30 +1446,30 @@ __stdcall EgtGetPrevOperation( int nId)
 
 //-----------------------------------------------------------------------------
 int
-__stdcall EgtGetFirstActiveOperation( void)
+__stdcall EgtGetFirstActiveOperation( bool bNeedMachNotEmpty)
 {
-   return ExeGetFirstActiveOperation() ;
+   return ExeGetFirstActiveOperation( bNeedMachNotEmpty) ;
 }
 
 //-----------------------------------------------------------------------------
 int
-__stdcall EgtGetNextActiveOperation( int nId)
+__stdcall EgtGetNextActiveOperation( int nId, bool bNeedMachNotEmpty)
 {
-   return ExeGetNextActiveOperation( nId) ;
+   return ExeGetNextActiveOperation( nId, bNeedMachNotEmpty) ;
 }
 
 //-----------------------------------------------------------------------------
 int
-__stdcall EgtGetLastActiveOperation( void)
+__stdcall EgtGetLastActiveOperation( bool bNeedMachNotEmpty)
 {
-   return ExeGetLastActiveOperation() ;
+   return ExeGetLastActiveOperation( bNeedMachNotEmpty) ;
 }
 
 //-----------------------------------------------------------------------------
 int
-__stdcall EgtGetPrevActiveOperation( int nId)
+__stdcall EgtGetPrevActiveOperation( int nId, bool bNeedMachNotEmpty)
 {
-   return ExeGetPrevActiveOperation( nId) ;
+   return ExeGetPrevActiveOperation( nId, bNeedMachNotEmpty) ;
 }
 
 //-----------------------------------------------------------------------------
@@ -1515,9 +1515,9 @@ __stdcall EgtGetOperationId( const wchar_t* wsName)
 
 //-----------------------------------------------------------------------------
 BOOL
-__stdcall EgtIsOperationEmpty( int nId)
+__stdcall EgtIsOperationEmpty( int nId, int nEmptyType)
 {
-   return ( ExeIsOperationEmpty( nId) ? TRUE : FALSE) ;
+   return ( ExeIsOperationEmpty( nId, nEmptyType) ? TRUE : FALSE) ;
 }
 
 //-----------------------------------------------------------------------------
@@ -1844,9 +1844,9 @@ __stdcall EgtGetMachiningGeometry( int nInd, int* pnId, int* pnSub)
 
 //-----------------------------------------------------------------------------
 BOOL
-__stdcall EgtIsMachiningEmpty( void)
+__stdcall EgtIsMachiningEmpty( int nEmptyType)
 {
-   return ( ExeIsMachiningEmpty() ? TRUE : FALSE) ;
+   return ( ExeIsMachiningEmpty( nEmptyType) ? TRUE : FALSE) ;
 }
 
 //-----------------------------------------------------------------------------
diff --git a/EgtInterface.rc b/EgtInterface.rc
index 761a21b..977ad16 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ