diff --git a/EXeConst.h b/EXeConst.h
index b4ba09d..d29fb8d 100644
--- a/EXeConst.h
+++ b/EXeConst.h
@@ -101,6 +101,14 @@ enum ZoomType { ZM_ALL = 1,                  // zoom tutto
                 ZM_IN = 2,                   // ingrandisci
                 ZM_OUT = 3} ;                // rimpicciolisci
 
+//----------------- Costanti errore simulatore in cieco ------------------------
+enum SimHideErr { SHE_NONE = 0,              // nessun errore
+                  SHE_INIT = 1,              // errore nell'avvio della simulazione
+                  SHE_OUTSTROKE = 2,         // errore di extracorsa
+                  SHE_DIR_ERR = 3,           // errore direzione utensile non raggiungibile
+                  SHE_COLLISION = 4,         // errore collisione testa-pezzo
+                  SHE_GENERAL = 5} ;         // errore generico
+
 //----------------- Costanti per sostituzione direttorio e nome progetto --------------------
 const std::string SUB_PROJECT_DIR = "%PRJDIR%" ;
 const std::string SUB_PROJECT_TITLE = "%PRJTITLE%" ;
diff --git a/EXeExecutor.h b/EXeExecutor.h
index fe4ea26..f706194 100644
--- a/EXeExecutor.h
+++ b/EXeExecutor.h
@@ -58,7 +58,9 @@ EXE_EXPORT bool ExeGetKeyOptLeftDays( int& nOptLeftDays) ;
 EXE_EXPORT bool ExeGetOsInfo( std::string& sOs) ;
 EXE_EXPORT bool ExeGetCpuInfo( std::string& sCpu) ;
 EXE_EXPORT bool ExeGetMemoryInfo( std::string& sMem) ;
-EXE_EXPORT bool ExeOutLog( const std::string& sMsg) ;
+EXE_EXPORT bool ExeOutLog( const std::string& sMsg, int nDebugLevel = 0) ;
+EXE_EXPORT bool ExeSetEnableUI( bool bEnableUI) ;
+EXE_EXPORT bool ExeGetEnableUI( void) ;
 EXE_EXPORT bool ExeSetProcessEvents( pfProcEvents pFun) ;
 EXE_EXPORT int  ExeProcessEvents( int nProg, int nPause) ;
 EXE_EXPORT bool ExeSetOutText( pfOutText pFun) ;
@@ -879,6 +881,7 @@ EXE_EXPORT bool ExeSimExit( void) ;
 // Generation & T&L estimation
 EXE_EXPORT bool ExeGenerate( const std::string& sCncFile, const std::string& sInfo) ;
 EXE_EXPORT bool ExeEstimate( const std::string& sEstFile, const std::string& sInfo) ;
+EXE_EXPORT bool ExeSimulate( int& nErr, std::string& sError) ;
 // Machine
 EXE_EXPORT int  ExeGetBaseId( const std::string& sBase) ;
 EXE_EXPORT int  ExeGetTableId( const std::string& sTable) ;