diff --git a/API_Scene.cpp b/API_Scene.cpp
index 692079b..9781f46 100644
--- a/API_Scene.cpp
+++ b/API_Scene.cpp
@@ -68,6 +68,39 @@ __stdcall EgtSetBackground( int nGseCtx, int nTopRed, int nTopGreen, int nTopBlu
    return TRUE ;
 }
 
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtSetMarkAttribs( int nGseCtx, int nRed, int nGreen, int nBlue)
+{
+   GseContext* pGseCtx = GetGseContext( nGseCtx) ;
+   VERIFY_CTX_SCENE( pGseCtx, FALSE)
+  // imposto il colore del Mark
+   Color MKcol( nRed, nGreen, nBlue) ;
+   return ( pGseCtx->m_pScene->SetMark( MKcol) ? TRUE : FALSE) ;
+}
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtSetGeoLineAttribs( int nGseCtx, int nRed, int nGreen, int nBlue)
+{
+   GseContext* pGseCtx = GetGseContext( nGseCtx) ;
+   VERIFY_CTX_SCENE( pGseCtx, FALSE)
+  // imposto il colore della linea geometrica gestita direttamente dalla scena
+   Color Glcol( nRed, nGreen, nBlue) ;
+   return ( pGseCtx->m_pScene->SetGeoLineAttribs( Glcol) ? TRUE : FALSE) ;
+}
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtSetWinRectAttribs( int nGseCtx, BOOL bOutline, int nRed, int nGreen, int nBlue, int nAlpha)
+{
+   GseContext* pGseCtx = GetGseContext( nGseCtx) ;
+   VERIFY_CTX_SCENE( pGseCtx, FALSE)
+  // imposto il colore della linea geometrica gestita direttamente dalla scena
+   Color WRcol( nRed, nGreen, nBlue, nAlpha) ;
+   return ( pGseCtx->m_pScene->SetWinRectAttribs( ( bOutline != FALSE), WRcol) ? TRUE : FALSE) ;
+}
+
 //-----------------------------------------------------------------------------
 BOOL
 __stdcall EgtResize( int nGseCtx, int nW, int nH)
@@ -123,6 +156,23 @@ __stdcall EgtGetNextSelectedObj( int nGseCtx)
    return pGseCtx->m_pScene->GetNextSelectedObj() ;
 }
 
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtGetSelectedSnapPoint( int nGseCtx, int nSnap, int nWinX, int nWinY, int nSelW, int nSelH,
+                                   double ptP[3])
+{
+   GseContext* pGseCtx = GetGseContext( nGseCtx) ;
+   VERIFY_CTX_SCENE( pGseCtx, FALSE)
+  // trovo il punto snap da selezione
+   Point3d ptSnap ;
+   if ( ! pGseCtx->m_pScene->GetSelectedSnapPoint( nSnap, Point3d( nWinX, nWinY), nSelW, nSelH, ptSnap))
+      return FALSE ;
+   ptP[0] = ptSnap.x ;
+   ptP[1] = ptSnap.y ;
+   ptP[2] = ptSnap.z ;
+   return TRUE ;
+}
+
 //-----------------------------------------------------------------------------
 BOOL
 __stdcall EgtSetShowMode( int nGseCtx, int nShowMode, BOOL bRedraw)
@@ -140,19 +190,39 @@ __stdcall EgtSetShowMode( int nGseCtx, int nShowMode, BOOL bRedraw)
       return FALSE ;
 }
 
+//-----------------------------------------------------------------------------
+int
+__stdcall EgtGetShowMode( int nGseCtx)
+{
+   GseContext* pGseCtx = GetGseContext( nGseCtx) ;
+   VERIFY_CTX_SCENE( pGseCtx, FALSE)
+  // recupero il modo di visualizzazione
+   return pGseCtx->m_pScene->GetShowMode() ;
+}
+
 //-----------------------------------------------------------------------------
 BOOL
-__stdcall EgtSetShowCurveDirection( int nGseCtx, int nShow, BOOL bRedraw)
+__stdcall EgtSetShowCurveDirection( int nGseCtx, BOOL bShow, BOOL bRedraw)
 {
    GseContext* pGseCtx = GetGseContext( nGseCtx) ;
    VERIFY_CTX_SCENE( pGseCtx, FALSE)
   // imposto stato
-   pGseCtx->m_pScene->SetShowCurveDirection( nShow != 0) ;
+   pGseCtx->m_pScene->SetShowCurveDirection( bShow != FALSE) ;
    if ( bRedraw)
       pGseCtx->m_pScene->RedrawWindow() ;
    return TRUE ;
 }
 
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtGetShowCurveDirection( int nGseCtx)
+{
+   GseContext* pGseCtx = GetGseContext( nGseCtx) ;
+   VERIFY_CTX_SCENE( pGseCtx, FALSE)
+  // recupero lo stato
+   return pGseCtx->m_pScene->GetShowCurveDirection() ;
+}
+
 //-----------------------------------------------------------------------------
 BOOL
 __stdcall EgtZoom( int nGseCtx, int nZoom, BOOL bRedraw)
@@ -302,7 +372,7 @@ __stdcall EgtSetViewCenter( int nGseCtx, const double ptP[3], BOOL bRedraw)
    GseContext* pGseCtx = GetGseContext( nGseCtx) ;
    VERIFY_CTX_SCENE( pGseCtx, FALSE)
   // imposto vista
-   pGseCtx->m_pScene->SetCenter( Point3d( ptP[0], ptP[1], ptP[2])) ;
+   pGseCtx->m_pScene->SetCenter( Point3d( ptP)) ;
    if ( bRedraw)
       pGseCtx->m_pScene->RedrawWindow() ;
    return TRUE ;
@@ -357,9 +427,25 @@ __stdcall EgtUnProjectPoint( int nGseCtx, int nWinX, int nWinY, double ptP[3])
    Point3d ptView( nWinX, nWinY, pScene->GetProjectedCenter().z) ;
    Point3d ptWorld ;
    if ( ! pScene->UnProject( ptView, ptWorld))
-      return 0 ;
+      return FALSE ;
    ptP[0] = ptWorld.x ;
    ptP[1] = ptWorld.y ;
    ptP[2] = ptWorld.z ;
    return TRUE ;
 }
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtProjectPoint( int nGseCtx, const double ptP[3], double ptWin[3])
+{
+   IEGrScene* pScene = GetScene( nGseCtx) ;
+   VERIFY_SCENE( pScene, FALSE)
+  // eseguo la proiezione
+   Point3d ptView ;
+   if ( ! pScene->Project( Point3d( ptP), ptView))
+      return FALSE ;
+   ptWin[0] = ptView.x ;
+   ptWin[1] = ptView.y ;
+   ptWin[2] = ptView.z ;
+   return TRUE ;
+}
diff --git a/EgtInterface.rc b/EgtInterface.rc
index b264170..359c21a 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ