diff --git a/AuxTools.h b/AuxTools.h
index 5e3d27d..2db645f 100644
--- a/AuxTools.h
+++ b/AuxTools.h
@@ -11,6 +11,8 @@
 //
 //----------------------------------------------------------------------------
 
+#pragma once
+
 #include "/EgtDev/Include/EgtNumCollection.h"
 #include <string>
 
diff --git a/EgtExecutor.rc b/EgtExecutor.rc
index 41e9da2..212ff31 100644
Binary files a/EgtExecutor.rc and b/EgtExecutor.rc differ
diff --git a/EgtExecutor.vcxproj b/EgtExecutor.vcxproj
index 7ac12ff..a68fd03 100644
--- a/EgtExecutor.vcxproj
+++ b/EgtExecutor.vcxproj
@@ -264,6 +264,7 @@ copy $(TargetPath) \EgtProg\Dll64</Command>
     <ClCompile Include="DllMachKernel.cpp" />
     <ClCompile Include="EXeDllMain.cpp" />
     <ClCompile Include="EXE_UiUnits.cpp" />
+    <ClCompile Include="GenTools.cpp" />
     <ClCompile Include="GeoTools.cpp" />
     <ClCompile Include="GseContext.cpp" />
     <ClCompile Include="LUA_Base.cpp" />
diff --git a/EgtExecutor.vcxproj.filters b/EgtExecutor.vcxproj.filters
index 87d3002..1021607 100644
--- a/EgtExecutor.vcxproj.filters
+++ b/EgtExecutor.vcxproj.filters
@@ -290,6 +290,9 @@
     <ClCompile Include="LUA_GdbModifyVol.cpp">
       <Filter>File di origine\LUA</Filter>
     </ClCompile>
+    <ClCompile Include="GenTools.cpp">
+      <Filter>File di origine\Global</Filter>
+    </ClCompile>
   </ItemGroup>
   <ItemGroup>
     <ResourceCompile Include="EgtExecutor.rc">
diff --git a/GenTools.cpp b/GenTools.cpp
new file mode 100644
index 0000000..9046844
--- /dev/null
+++ b/GenTools.cpp
@@ -0,0 +1,55 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2017-2017
+//----------------------------------------------------------------------------
+// File : GenTools.cpp           Data : 08.01.17        Versione : 1.6x5
+// Contenuto : Funzioni generalie.
+//
+//
+//
+// Modifiche : 08.01.17 DS Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+#include "stdafx.h"
+#include "GenTools.h"
+#include <utility>
+
+using namespace std ;
+
+//----------------------------------------------------------------------------
+HWND
+FindTopWindow( void)
+{
+  // Recupero l'Id del processo corrente
+   DWORD pid = GetCurrentProcessId() ;
+
+   pair<HWND, DWORD> params = { 0, pid} ;
+
+  // Enumerate the windows using a lambda to process each window
+   BOOL bResult = EnumWindows( []( HWND hWnd, LPARAM lParam) -> BOOL 
+                     {
+                        auto pParams = ( pair<HWND, DWORD>*)(lParam) ;
+
+                        DWORD processId ;
+                        if ( GetWindowThreadProcessId( hWnd, &processId)  &&
+                             processId == pParams->second  &&
+                             GetWindow( hWnd, GW_OWNER) == (HWND) nullptr  &&
+                             IsWindowVisible( hWnd)) {
+                           // Stop enumerating
+                           SetLastError( -1) ;
+                           pParams->first = hWnd ;
+                           return FALSE ;
+                        }
+
+                        // Continue enumerating
+                        return TRUE ;
+                     }, (LPARAM) &params) ;
+
+
+   if ( ! bResult  &&  GetLastError() == -1  &&  params.first != nullptr) {
+      return params.first ;
+   }
+
+   return nullptr ;
+}
\ No newline at end of file
diff --git a/GenTools.h b/GenTools.h
new file mode 100644
index 0000000..851371d
--- /dev/null
+++ b/GenTools.h
@@ -0,0 +1,22 @@
+//----------------------------------------------------------------------------
+//  EgalTech 2017-2017
+//----------------------------------------------------------------------------
+// File : GenTools.h             Data : 08.01.17        Versione : 1.6x5
+// Contenuto : Prototipi funzioni generiche.
+//
+//
+//
+// Modifiche : 08.01.17 DS Creazione modulo.
+//
+//
+//----------------------------------------------------------------------------
+
+#pragma once
+
+#define NOMINMAX
+#include <windows.h>
+
+//----------------------------------------------------------------------------
+// Recupero l'handle della finestra principale dell'eseguibile
+HWND FindTopWindow( void) ;
+
diff --git a/GeoTools.h b/GeoTools.h
index 6c6dfb6..6feaa01 100644
--- a/GeoTools.h
+++ b/GeoTools.h
@@ -11,6 +11,8 @@
 //
 //----------------------------------------------------------------------------
 
+#pragma once
+
 #include "/EgtDev/Include/EGkPoint3d.h"
 #include "/EgtDev/Include/EgtNumCollection.h"
 
diff --git a/LUA_General.cpp b/LUA_General.cpp
index 05b7f4c..291a40d 100644
--- a/LUA_General.cpp
+++ b/LUA_General.cpp
@@ -15,6 +15,7 @@
 #include "stdafx.h"
 #include "EXE.h"
 #include "LUA.h"
+#include "GenTools.h"
 #include "/EgtDev/Include/ExeExecutor.h"
 #include "/EgtDev/Include/EGkLuaAux.h"
 #include "/EgtDev/Include/EGnStringUtils.h"
@@ -216,7 +217,7 @@ LuaOutLog( lua_State* L)
 static int
 LuaOutBox( lua_State* L)
 {
-  // 3 o 4 parametri : stringa, titolo, icona [bModal]
+  // 3 o 4 parametri : stringa, titolo, icona [, bModal]
    string sOut ;
    LuaCheckParam( L, 1, sOut)
    string sTitle ;
@@ -233,7 +234,7 @@ LuaOutBox( lua_State* L)
    LuaGetParam( L, 4, bModal) ;
    LuaClearStack( L) ;
   // emetto la finestra di dialogo
-   int nRes = MessageBox( nullptr, stringtoW( sOut), stringtoW( sTitle),
+   int nRes = MessageBox( FindTopWindow(), stringtoW( sOut), stringtoW( sTitle),
                           MB_OKCANCEL | nIcon | ( bModal ? MB_TASKMODAL : MB_SYSTEMMODAL)) ;
   // risultato (Ok->true, Cancel->false)
    LuaSetParam( L, ( nRes == IDOK)) ;
@@ -272,6 +273,52 @@ LuaOutText( lua_State* L)
    return 1 ;
 }
 
+//-------------------------------------------------------------------------------
+static int
+LuaFileDialog( lua_State* L)
+{
+  // 3 parametri : bOpenVsSave, sFile, sFilter
+   bool bOpenVsSave ;
+   LuaCheckParam( L, 1, bOpenVsSave)
+   string sFile ;
+   LuaCheckParam( L, 2, sFile)
+   string sFilter ;
+   LuaCheckParam( L, 3, sFilter)
+   LuaClearStack( L) ;
+  // Converto i parametri nel formato wide e cambio L'|' in L'\0' nel filtro
+   AtoWEX<MAX_PATH> wsFileName( sFile.c_str()) ;
+   AtoW wsFilter( sFilter.c_str()) ;
+   for ( wchar_t* pC = wsFilter.m_psz ; *pC != L'\0' ; ++ pC) {
+      if ( *pC == L'|')
+         *pC = L'\0' ;
+   }
+  // Riempio la struttura dati per il dialogo
+   OPENFILENAME ofn ;
+   ZeroMemory( &ofn, sizeof( ofn)) ;
+   ofn.lStructSize  = sizeof( ofn) ;
+   ofn.hwndOwner    = FindTopWindow() ;
+   ofn.lpstrFilter  = LPWSTR( wsFilter) ;
+   ofn.lpstrFile    = LPWSTR( wsFileName) ;
+   ofn.nMaxFile     = MAX_PATH ;
+   ofn.Flags        = OFN_DONTADDTORECENT | OFN_PATHMUSTEXIST ;
+  // Visualizzo il dialogo 
+   if ( bOpenVsSave) {
+      ofn.Flags |= OFN_FILEMUSTEXIST ;
+      if ( GetOpenFileName( &ofn) != FALSE)
+         LuaSetParam( L, wstrztoA( wsFileName)) ;
+      else
+         LuaSetParam( L) ;
+   }
+   else {
+      ofn.Flags |= OFN_OVERWRITEPROMPT ;
+      if ( GetSaveFileName( &ofn) != FALSE)
+         LuaSetParam( L, wstrztoA( wsFileName)) ;
+      else
+         LuaSetParam( L) ;
+   }
+   return 1 ;
+}
+
 //-------------------------------------------------------------------------------
 static int
 LuaExistsFile( lua_State* L)
@@ -490,6 +537,7 @@ LuaInstallGeneral( LuaMgr& luaMgr)
    bOk = bOk && luaMgr.RegisterFunction( "EgtOutBox", LuaOutBox) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtProcessEvents", LuaProcessEvents) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtOutText", LuaOutText) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtFileDialog", LuaFileDialog) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtExistsFile", LuaExistsFile) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtCopyFile", LuaCopyFile) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtRenameFile", LuaRenameFile) ;
diff --git a/LUA_MachMgr.cpp b/LUA_MachMgr.cpp
index 784d887..0b955d8 100644
--- a/LUA_MachMgr.cpp
+++ b/LUA_MachMgr.cpp
@@ -2586,6 +2586,27 @@ LuaGetCalcTipFromPositions( lua_State* L)
    return 1 ;
 }
 
+//-------------------------------------------------------------------------------
+static int
+LuaGetCalcToolDirFromAngles( lua_State* L)
+{
+  // 2 parametri : dAngA, dAngB
+   double dAngA ;
+   LuaCheckParam( L, 1, dAngA)
+   double dAngB ;
+   LuaCheckParam( L, 2, dAngB)
+   LuaClearStack( L) ;
+  // Calcolo la direzione utensile dagli angoli macchina
+   Vector3d vtDir ;
+   bool bOk = ExeGetCalcToolDirFromAngles( dAngA, dAngB, vtDir) ;
+  // restituisco il risultato
+   if ( bOk)
+      LuaSetParam( L, vtDir) ;
+   else
+      LuaSetParam( L) ;
+   return 1 ;
+}
+
 //-------------------------------------------------------------------------------
 static int
 LuaVerifyOutstroke( lua_State* L)
@@ -3032,6 +3053,7 @@ LuaInstallMachMgr( LuaMgr& luaMgr)
    bOk = bOk && luaMgr.RegisterFunction( "EgtGetCalcAngles", LuaGetCalcAngles) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtGetCalcPositions", LuaGetCalcPositions) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtGetCalcTipFromPositions", LuaGetCalcTipFromPositions) ;
+   bOk = bOk && luaMgr.RegisterFunction( "EgtGetCalcToolDirFromAngles", LuaGetCalcToolDirFromAngles) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtVerifyOutstroke", LuaVerifyOutstroke) ;
    bOk = bOk && luaMgr.RegisterFunction( "EgtGetOutstrokeInfo", LuaGetOutstrokeInfo) ;
    // Machine Move