diff --git a/src/SMESH_I/SMESH_Filter_i.cxx b/src/SMESH_I/SMESH_Filter_i.cxx
index 969ffb613..bf5bc2ba6 100644
--- a/src/SMESH_I/SMESH_Filter_i.cxx
+++ b/src/SMESH_I/SMESH_Filter_i.cxx
@@ -2206,6 +2206,21 @@ SMESH::long_array* ::Filter_i::GetMeshInfo()
   return aRes._retn();  
 }
 
+//================================================================================
+/*!
+ * \brief Return GetElementType() within an array
+ * Implement SMESH_IDSource interface
+ */
+//================================================================================
+
+SMESH::array_of_ElementType* Filter_i::GetTypes()
+{
+  SMESH::array_of_ElementType_var types = new SMESH::array_of_ElementType;
+  types->length( 1 );
+  types[0] = GetElementType();
+  return types._retn();
+}
+
 //=======================================================================
 // name    : getCriteria
 // Purpose : Retrieve criterions from predicate
diff --git a/src/SMESH_I/SMESH_Filter_i.hxx b/src/SMESH_I/SMESH_Filter_i.hxx
index 057c7693b..5451f821f 100644
--- a/src/SMESH_I/SMESH_Filter_i.hxx
+++ b/src/SMESH_I/SMESH_Filter_i.hxx
@@ -790,6 +790,10 @@ namespace SMESH
     SMESH::long_array*
     GetMeshInfo();
 
+    virtual
+    SMESH::array_of_ElementType*
+    GetTypes();
+
     static
     void
     GetElementsId( Predicate_i*,
diff --git a/src/SMESH_I/SMESH_Group_i.cxx b/src/SMESH_I/SMESH_Group_i.cxx
index d6f2d4ee4..e600c37f0 100644
--- a/src/SMESH_I/SMESH_Group_i.cxx
+++ b/src/SMESH_I/SMESH_Group_i.cxx
@@ -426,17 +426,6 @@ SMESH::SMESH_Mesh_ptr SMESH_GroupBase_i::GetMesh()
   return aMesh._retn();
 }
 
-//=============================================================================
-/*!
- *  
- */
-//=============================================================================
-SMESH::long_array* SMESH_GroupBase_i::GetIDs()
-{
-  SMESH::long_array_var aResult = GetListOfID();
-  return aResult._retn();
-}
-
 //=======================================================================
 //function : GetShape
 //purpose  : 
@@ -543,3 +532,28 @@ SMESH::long_array* SMESH_GroupBase_i::GetMeshInfo()
     SMESH_Mesh_i::CollectMeshInfo( aGrpDS->GetElements(), aRes);
   return aRes._retn();
 }
+
+//=======================================================================
+//function : GetIDs
+//purpose  : Returns ids of members
+//=======================================================================
+
+SMESH::long_array* SMESH_GroupBase_i::GetIDs()
+{
+  SMESH::long_array_var aResult = GetListOfID();
+  return aResult._retn();
+}
+
+//=======================================================================
+//function : GetTypes
+//purpose  : Returns types of elements it contains
+//=======================================================================
+
+SMESH::array_of_ElementType* SMESH_GroupBase_i::GetTypes()
+{
+  SMESH::array_of_ElementType_var types = new SMESH::array_of_ElementType;
+  types->length( 1 );
+  types[0] = GetType();
+  return types._retn();
+}
+
diff --git a/src/SMESH_I/SMESH_Group_i.hxx b/src/SMESH_I/SMESH_Group_i.hxx
index 0dffef1e8..60d61f6c0 100644
--- a/src/SMESH_I/SMESH_Group_i.hxx
+++ b/src/SMESH_I/SMESH_Group_i.hxx
@@ -75,6 +75,12 @@ class SMESH_I_EXPORT SMESH_GroupBase_i:
   // Inherited from SMESH_IDSource interface
   virtual SMESH::long_array* GetIDs();
 
+  /*!
+   * Returns types of elements it contains
+   * Inherited from SMESH_IDSource interface
+   */
+  virtual SMESH::array_of_ElementType* GetTypes();
+
   // Internal C++ interface
   int GetLocalID() const { return myLocalID; }
   SMESH_Mesh_i* GetMeshServant() const { return myMeshServant; }
diff --git a/src/SMESH_I/SMESH_Mesh_i.cxx b/src/SMESH_I/SMESH_Mesh_i.cxx
index 1d631cfce..a38a8f9ba 100644
--- a/src/SMESH_I/SMESH_Mesh_i.cxx
+++ b/src/SMESH_I/SMESH_Mesh_i.cxx
@@ -655,6 +655,8 @@ SMESH::SMESH_subMesh_ptr SMESH_Mesh_i::GetSubMesh(GEOM::GEOM_Object_ptr aSubShap
     //Get or Create the SMESH_subMesh object implementation
 
     int subMeshId = _impl->GetMeshDS()->ShapeToIndex( myLocSubShape );
+    if ( !subMeshId )
+      THROW_SALOME_CORBA_EXCEPTION("not sub-shape of the main shape", SALOME::BAD_PARAM);
     subMesh = getSubMesh( subMeshId );
 
     // create a new subMesh object servant if there is none for the shape
@@ -3548,6 +3550,30 @@ SMESH::string_array* SMESH_Mesh_i::GetLastParameters()
   return aResult._retn();
 }
 
+//=======================================================================
+//function : GetTypes
+//purpose  : Returns types of elements it contains
+//=======================================================================
+
+SMESH::array_of_ElementType* SMESH_Mesh_i::GetTypes()
+{
+  SMESH::array_of_ElementType_var types = new SMESH::array_of_ElementType;
+
+  types->length( 4 );
+  int nbTypes = 0;
+  if (_impl->NbEdges())
+    types[nbTypes++] = SMESH::EDGE;
+  if (_impl->NbFaces())
+    types[nbTypes++] = SMESH::FACE;
+  if (_impl->NbVolumes())
+    types[nbTypes++] = SMESH::VOLUME;
+  if (_impl->Nb0DElements())
+    types[nbTypes++] = SMESH::ELEM0D;
+  types->length( nbTypes );
+
+  return types._retn();
+}
+
 //=============================================================================
 /*!
  * \brief Returns statistic of mesh elements
diff --git a/src/SMESH_I/SMESH_Mesh_i.hxx b/src/SMESH_I/SMESH_Mesh_i.hxx
index 92cf410b5..d3f550ecd 100644
--- a/src/SMESH_I/SMESH_Mesh_i.hxx
+++ b/src/SMESH_I/SMESH_Mesh_i.hxx
@@ -373,8 +373,6 @@ public:
    */
   void CheckGeomGroupModif();
 
-  virtual SMESH::long_array* GetIDs();
-
   CORBA::LongLong GetMeshPtr();
 
   /*!
@@ -502,14 +500,6 @@ public:
    */
   SMESH::string_array* GetLastParameters();
 
-
-  /*!
-   * Returns statistic of mesh elements
-   * Result array of number enityties
-   * Inherited from SMESH_IDSource
-   */
-  virtual SMESH::long_array* GetMeshInfo();
-
   /*!
    * Collect statistic of mesh elements given by iterator
    */
@@ -526,6 +516,25 @@ public:
   virtual ::CORBA::Boolean SetMeshOrder(const SMESH::submesh_array_array& theSubMeshArray);
 
 
+  // =========================
+  // SMESH_IDSource interface
+  // =========================
+
+  virtual SMESH::long_array* GetIDs();
+
+  /*!
+   * Returns statistic of mesh elements
+   * Result array of number enityties
+   * Inherited from SMESH_IDSource
+   */
+  virtual SMESH::long_array* GetMeshInfo();
+
+  /*!
+   * Returns types of elements it contains
+   */
+  virtual SMESH::array_of_ElementType* GetTypes();
+
+
   std::map<int, SMESH_subMesh_i*> _mapSubMesh_i; //NRI
   std::map<int, ::SMESH_subMesh*> _mapSubMesh;   //NRI
 
diff --git a/src/SMESH_I/SMESH_subMesh_i.cxx b/src/SMESH_I/SMESH_subMesh_i.cxx
index 301f1a972..8401ce775 100644
--- a/src/SMESH_I/SMESH_subMesh_i.cxx
+++ b/src/SMESH_I/SMESH_subMesh_i.cxx
@@ -545,3 +545,26 @@ SMESH::long_array* SMESH_subMesh_i::GetMeshInfo()
 
   return aRes._retn();
 }
+
+
+//=======================================================================
+//function : GetTypes
+//purpose  : Returns types of elements it contains
+//=======================================================================
+
+SMESH::array_of_ElementType* SMESH_subMesh_i::GetTypes()
+{
+  SMESH::array_of_ElementType_var types = new SMESH::array_of_ElementType;
+  types->length( 1 );
+  ::SMESH_subMesh* aSubMesh = _mesh_i->_mapSubMesh[_localId];
+  switch ( ::SMESH_Gen::GetShapeDim( aSubMesh->GetSubShape() ))
+  {
+  case 0: types[0] = SMESH::ELEM0D; break;
+  case 1: types[0] = SMESH::EDGE; break;
+  case 2: types[0] = SMESH::FACE; break;
+  case 3: types[0] = SMESH::VOLUME; break;
+  default:
+    types->length(0);
+  }
+  return types._retn();
+}
diff --git a/src/SMESH_I/SMESH_subMesh_i.hxx b/src/SMESH_I/SMESH_subMesh_i.hxx
index bd53171ae..3f90a8cb8 100644
--- a/src/SMESH_I/SMESH_subMesh_i.hxx
+++ b/src/SMESH_I/SMESH_subMesh_i.hxx
@@ -94,6 +94,12 @@ public:
    */
   virtual SMESH::long_array* GetMeshInfo();
 
+  /*!
+   * Returns types of elements it contains
+   */
+  virtual SMESH::array_of_ElementType* GetTypes();
+
+
   SMESH_Mesh_i* _mesh_i; //NRI
 
 protected: