Specifies check states for individual check boxes.
property States[AIndex: Integer]: TcxCheckBoxState read; write;
Use the States property to obtain or change the check state of an individual item within the check combo box. The item whose state is to be returned or modified is specified by its index via the Index parameter. The first item’s index is zero. The last item’s index is the number of items decremented by one. Specifying an invalid item index will raise an exception.
Setting this property at design time invokes the “cxCheckComboBox – CheckStates editor“ which helps you to customize the items’ check states.