property Items.EnableItem(Item as HITEM) as Boolean

Returns or sets a value that determines whether a item can respond to user-generated events.

TypeDescription
Item as HITEM A long expression that indicates the item's handle that is enabled or disabled.
Boolean A boolean expression that indicates whether the item is enabled or disabled.

Once that an item is disabled all the cells of the item are disabled, so CellEnabled property has no effect. To disable a column you can use Enabled property of a Column object.