I have a grid that has tooltips turned on:

this.gridTransactions.DisplayLayout.Override.TipStyleCell = TipStyle.Show;

In the MouseMove event I basically show the cell text in the tooltip:
        private void gridTransactions_MouseMove(object sender, MouseEventArgs e)
        {
            UIElement mouseupUIElement = gridTransactions.DisplayLayout.UIElement.ElementFromPoint(new Point(e.X, e.Y));
            UltraGridCell currentCell = null;

            if (mouseupUIElement != null)
            {
                currentCell = mouseupUIElement.GetContext(typeof(UltraGridCell)) as UltraGridCell;
            }

            if (currentCell != null)
            {
                SetTxnGridCellToolTip(currentCell);
            }
        }

In this grid I have two columns where the cells have a EditorWithText editor with buttons.  I don't want the tooltip to show in these columns.  How do I show the tooltip in all but cells in these two columns?