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

| Type | Description | |||
| Item as Variant | A long expression that indicates the item's handle. | |||
| ColIndex as Variant | A long expression that indicates the column's index, a string expression that indicates the column's caption or the column's key. | |||
| Boolean | A boolean expression that indicates whether the cell is enabled or disabled. |
Use the CellEnabled property to disable a cell. A disabled cell looks grayed. Use the EnableItem property to disable an item. Once that one cell is disabled it cannot be checked or clicked. Use the SelectableItem property to specify the user can select an item. To disable a column you can use Enabled property of the Column object.
Note: A cell is identified by the intersection of an item and a column. Properties that have Item and ColIndex parameters let you specify a cell in different ways. The Item parameter identifies the item, while the ColIndex parameter identifies the column.
The Item parameter can be the handle of an item. The ColIndex parameter can specify the column by its index (a numerical value, see the Column.Index property), by its caption (a string value, see the Column.Caption property), or by a cell handle returned by the ItemCell property.
For example, the following statement sets the Bold property of the cell at the intersection of the first item and the first column. The Item parameter is omitted because the ColIndex parameter receives the cell handle returned by ItemCell.
Tree1.Items.CellBold(, Tree1.Items.ItemCell(Tree1.Items(0), 0)) = True
The same cell can be specified by passing the item handle and the column index separately:
Tree1.Items.CellBold(Tree1.Items(0), 0) = True
You can also specify the column by its caption instead of its numerical index:
Tree1.Items.CellBold(Tree1.Items(0), "ColumnName") = True