constants CheckStateEnum
Specifies whether the editor's checkbox displays two or three states. The PartialCheck property specifies whether the checkbox of the editor displays two states or three states. Use the HasCheckBox property to assign a checkbox to an editor.

NameValueDescription
Unchecked0 The associated check box is unchecked.
Checked1 The associated check box is checked.
PartialChecked2 The associated check box is partially checked.