diff --git a/interface/wx/grid.h b/interface/wx/grid.h
index dd3d78770a..9eb69fd9f4 100644
--- a/interface/wx/grid.h
+++ b/interface/wx/grid.h
@@ -4303,6 +4303,11 @@ public:
     */
     void SetRowAttr(int row, wxGridCellAttr* attr);
 
+    
+    wxArrayInt CalcRowLabelsExposed( const wxRegion& reg );
+    wxArrayInt CalcColLabelsExposed( const wxRegion& reg );
+    wxGridCellCoordsArray CalcCellsExposed( const wxRegion& reg );
+
     //@}