some extra refreshing and updating on wxMac so the grid renders itself correctly.

git-svn-id: https://svn.wxwidgets.org/svn/wx/wxWidgets/trunk@33800 c3d73ce0-8a6f-49c7-b76d-6d57e0e08775

src/generic/grid.cpp

@@ -7788,6 +7788,10 @@ void wxGrid::HideCellEditControl()
         wxRect rect( CellToRect(row, col) );
         CalcScrolledPosition(rect.x, rect.y, &rect.x, &rect.y );
         rect.width = m_gridWin->GetClientSize().GetWidth() - rect.x;
+#ifdef __WXMAC__
+        // ensure that the pixels under the focus ring get refreshed as well
+        rect.Inflate(10,10);
+#endif
         m_gridWin->Refresh( false, &rect );
     }
 }