diff --git a/API_GdbObjSelection.cpp b/API_GdbObjSelection.cpp
index 96dcfa7..933ac9c 100644
--- a/API_GdbObjSelection.cpp
+++ b/API_GdbObjSelection.cpp
@@ -52,3 +52,13 @@ BOOL
   // deseleziono l'oggetto
    return ( pGeomDB->DeselectObj( nId) ? TRUE : FALSE) ;
  }
+
+//-----------------------------------------------------------------------------
+BOOL
+ __stdcall EgtDeselectAll( int nGseCtx)
+ {
+   IGeomDB* pGeomDB = GetGeomDB( nGseCtx) ;
+   VERIFY_GEOMDB( pGeomDB, FALSE)
+  // deseleziono tutto
+   return ( pGeomDB->ClearSelection() ? TRUE : FALSE) ;
+ }
diff --git a/API_GdbObjects.cpp b/API_GdbObjects.cpp
index 8859c6b..679eb2a 100644
--- a/API_GdbObjects.cpp
+++ b/API_GdbObjects.cpp
@@ -83,6 +83,44 @@ __stdcall EgtGetPrev( int nGseCtx, int nId)
    return pGeomDB->GetPrev( nId) ;
 }
 
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtGetBBox( int nGseCtx, int nId, int nFlag, double ptMin[3], double ptMax[3])
+{
+   IGeomDB* pGeomDB = GetGeomDB( nGseCtx) ;
+   VERIFY_GEOMDB( pGeomDB, GDB_ID_NULL)
+  // recupero il bounding box locale dell'oggetto
+   BBox3d b3Loc ;
+   if ( ! pGeomDB->GetLocalBBox( nId, b3Loc, nFlag))
+      return FALSE ;
+   ptMin[0] = b3Loc.GetMin().x ;
+   ptMin[1] = b3Loc.GetMin().y ;
+   ptMin[2] = b3Loc.GetMin().z ;
+   ptMax[0] = b3Loc.GetMax().x ;
+   ptMax[1] = b3Loc.GetMax().y ;
+   ptMax[2] = b3Loc.GetMax().z ;
+   return TRUE ;
+}
+
+//-----------------------------------------------------------------------------
+BOOL
+__stdcall EgtGetBBoxGlob( int nGseCtx, int nId, int nFlag, double ptMin[3], double ptMax[3])
+{
+   IGeomDB* pGeomDB = GetGeomDB( nGseCtx) ;
+   VERIFY_GEOMDB( pGeomDB, GDB_ID_NULL)
+  // recupero il bounding box globale dell'oggetto
+   BBox3d b3Loc ;
+   if ( ! pGeomDB->GetGlobalBBox( nId, b3Loc, nFlag))
+      return FALSE ;
+   ptMin[0] = b3Loc.GetMin().x ;
+   ptMin[1] = b3Loc.GetMin().y ;
+   ptMin[2] = b3Loc.GetMin().z ;
+   ptMax[0] = b3Loc.GetMax().x ;
+   ptMax[1] = b3Loc.GetMax().y ;
+   ptMax[2] = b3Loc.GetMax().z ;
+   return TRUE ;
+}
+
 //-----------------------------------------------------------------------------
 int
 __stdcall EgtCopy( int nGseCtx, int nSouId, int nRefId, int nSonBeforeAfter)
diff --git a/EgtInterface.rc b/EgtInterface.rc
index 359c21a..b7e0026 100644
Binary files a/EgtInterface.rc and b/EgtInterface.rc differ