showCheckboxColumn property Null safety
final
Whether the widget should display checkboxes for selectable rows.
If true, a Checkbox will be placed at the beginning of each row that is selectable. However, if DataRow.onSelectChanged is not set for any row, checkboxes will not be placed, even if this value is true.
If false, all rows will not display a Checkbox.
Implementation
final bool showCheckboxColumn;