constants CheckBoxEnum
The CheckBoxEnum expression defines the type of check boxes that control supports. Use the HasCheckBox property to assign a check box for each item in your control.

NameValueDescription
NoCheckBox0 The control provides no check boxes.
CheckBox-1 The control provides a two-states check box for each item.
PartialCheckBox1 The control provides a partial check box ( three-states check box ) for each item.