ConstReadonlyCalculating: "calculating"Work is in hand: a pass running or owed, answers the engine owes the model that have not landed, or work a consumer derives from the results (ICalculation.waitUntil).
ReadonlyDone: "done"Nothing is out of date and nothing is in flight.
ReadonlyPending: "pending"Changes have been made that need a recalculation, and none will run until one is asked for:
manual mode between an edit and ICalculation.calculate, or the TABLE data tables an
edit left out of date under AutomaticExceptTables.
Whether the running engine has work in hand - Excel's
XlCalculationState.