Configure your checkbox in FirstClass Designer if you want more than two states to be displayed. Has a default Value attribute equal to 0 (off), 1 (on) or 2 (grayed). Field attributes shared with FirstClass Designer: Attribute Data type Bold Boolean Border Boolean Bottom Boolean Caption String Center Boolean Color Boolean Condense Special Datatype Boolean DoubleClick Boolean Editable Boolean Extend Boolean FullJust Boolean Grey Boolean Hidden Integer Icon Integer Italic Any Outline Boolean Password Boolean Protected Boolean RJust Boolean Selectable Boolean Selected Boolean SelLength Integer SelStart Integer Shadow Boolean Text String Transparent Boolean Underline Boolean Field methods shared with FirstClass Designer: AddItem Change Click DblClick GotFocus LostFocus RemoveItem