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Is it possible to turn the slider icon off? I want to display the slider only in the focused cell. Cells that are not focused would only display a text value.

Right now I am implementing this by populating the grid with CExtGridCellString cells then switching the cell type of the focused cell in OnGbwFocusChanged in the grid. This works however I can no longer select multiple cells as is required in my app. Switching the cell type causes problems when any type of multiple select is attempted.

There’s a cell class CExtGridCellSlider. It seems to me it implements just what you need. Check out how it is used in ProfUIS_Controls sample.

Thank you for the suggestion however CExtGridCellInplaceSlider cell type also allows direct entry by the user which my app requires. The
CExtGridCellSlider type does not.

You should use a CExtGridCellInplaceSlider-derived class which would paint slider like appearance in one case and text like appearance in other cases by implementing the following virtual method:

      virtual void OnPaintRestArea(
            const RECT & rcCellRest,
            const CExtGridWnd & wndGrid,
            CDC & dc,
            LONG nVisibleColNo,
            LONG nVisibleRowNo,
            LONG nColNo,
            LONG nRowNo,
            INT nColType,
            INT nRowType,
            const RECT & rcCellExtra,
            const RECT & rcCell,
            const RECT & rcVisibleRange,
            DWORD dwAreaFlags,
            DWORD dwHelperPaintFlags
            ) const;

Your method should invoke the CExtGridCellInplaceSlider::OnPaintRestArea() parent class method for painting the slider. It should invoke the CExtGridCellVariant::OnPaintRestArea() parent class method for painting text. The dwHelperPaintFlags parameter contains a set of __EGCPF_*** flags which provide you with all information about the selected/focused cell state.