CheckDefault: CheckDefault is a standard CheckBox (3D).
CheckFlat: CheckFlat is a flat standard CheckBox. The flat look may vary with your operating system.
CheckListItemDefault: CheckListItemDefault is a ListItem, with a default CheckBox (3D).
CheckListItemFlat: CheckListItemFlat is a ListItem, with a flat CheckBox.
CheckDefaultFullRow: CheckDefaultFullRow is a CheckDefault-type SmartItem, integrated in a ListItemFullRow.
CheckFlatFullRow: CheckFlatFullRow is a CheckFlat-type SmartItem, integrated in a ListItemFullRow.