diff --git a/interface/wx/dataview.h b/interface/wx/dataview.h
index 600a1aa7b8..dcb4b7c429 100644
--- a/interface/wx/dataview.h
+++ b/interface/wx/dataview.h
@@ -2996,37 +2996,16 @@ public:
     */
     void SetDataObject( wxDataObject *obj );
 
-    /**
-        Used internally. Gets associated wxDataObject for data transfer
-        within a drag operation.
-    */
-    wxDataObject *GetDataObject() const;
-
-    /**
-        Used internally. Sets the wxDataFormat during a drop operation.
-    */
-    void SetDataFormat( const wxDataFormat &format );
-
     /**
         Gets the wxDataFormat during a drop operation.
     */
     wxDataFormat GetDataFormat() const;
 
-    /**
-        Used internally. Sets the data size for a drop data transfer.
-    */
-    void SetDataSize( size_t size );
-
     /**
         Gets the data size for a drop data transfer.
     */
     size_t GetDataSize() const;
 
-    /**
-        Used internally. Sets the data buffer for a drop data transfer.
-    */
-    void SetDataBuffer( void* buf );
-
     /**
         Gets the data buffer for a drop data transfer.
     */