>>That means that the leftmost bit is set
>>
>>Did you try UInteger instead of Integer data type ?
>>
>>UInteger cannot be negative http://msdn.microsoft.com/en-us/library/x79h55x9(VS.80).aspx
>
>There is a lot of Integer declarations in there. Which one specifically should I try that adjustment on?


(1) The short way is to cast the return result to UInteger, and change the return type of GetCrc32() to UInteger

(2) A bit more work is to change everything that is involved in the result to UInteger

At first glance
class level
- nCRC32
- nCRC32Table


in Initialize()
- lnDWPolynomial
- lnDWCRC

in GetCrc32()
- lnCRC32Result