TBitConverter

TBitConverter

FromBcd  
FromByte  
FromCurrency  
FromDouble  
FromExtended  
FromInteger  
FromLargeInt  
FromLongBool  
FromLongInt  
FromLongWord  
FromShortInt  
FromSingle  
FromSmallInt  
FromSqlTimeStamp  
FromSqlTimeStampOffset  
FromVariant  
FromWord  
FromWordBool  

TBitConverter provides two main class functions:

• From converts a value in a Delphi native type into an array of bytes.
• InTo converts an array of bytes into a Delphi native type.

TBitConverter

原文：http://www.cnblogs.com/cb168/p/4378550.html