Narrow a value based on a bit mask. Basically all the bits in the value that are in the bit mask are squezed into a value. Example if the bit mask is 1011 and the value is 1000 then it will return 0100. (because there is a gap in the bit mask so it shifts it over one.

protected internal long NarrowFromBitMask(
	long BitMask,
	long Value
)

Protected Friend Function NarrowFromBitMask ( _
	BitMask As Long, _
	Value As Long _
) As Long

protected public:
long long NarrowFromBitMask(
	long long BitMask, 
	long long Value
)