property Column.Def(Property as DefColumnEnum) as Variant
Retrieves or sets a value that indicates the default value of given properties for all cells in the same column.

TypeDescription
Property as DefColumnEnum A DefColumnEnum expression that indicates the property being changed.
Variant A Variant value that specifies the newly value.
the Def property to specify a common value for given properties for all cells in the column.

For instance, you can use the Def property to assign check boxes to all cells in the column, without enumerating them.

ExplorerTree1.Groups(0).Columns(0).Def(exCellHasCheckBox) = True