VOID InbvSetProgressBarSubset( ULONG Floor, ULONG Ceiling ); Routine Description: Sets floor and ceiling for subsequent calls to InbvUpdateProgressBar. While a floor and ceiling are in effect, a caller's 100% is a percentage of this range. If floor and ceiling are zero, the entire range is used. Arguments: Floor Lower limit of the subset. Ceiling Upper limit of the subset. Return Value: None.