diff --git a/API_MachMgr.cpp b/API_MachMgr.cpp
index 261204b..85d6437 100644
--- a/API_MachMgr.cpp
+++ b/API_MachMgr.cpp
@@ -1747,6 +1747,13 @@ __stdcall EgtUpdateMachining( void)
    return ( ExeUpdateMachining() ? TRUE : FALSE) ;
 }
 
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtChangePreviewMachiningToolShow( int nLookFlag)
+{
+   return ( ExeChangePreviewMachiningToolShow( nLookFlag) ? TRUE : FALSE) ;
+}
+
 //-----------------------------------------------------------------------------
 BOOL
 __stdcall EgtPreparePreviewMachiningTool( void)
diff --git a/EgtInterface.rc b/EgtInterface.rc
index b912cf5..5421fe4 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ