This method quickly finds a map element with a key that exactly matches the specified key. This method uses a hashing algorithm.
| Header file: | Afxtempl.h | 
| Platforms: | H/PC 2.0, Palm-size PC, H/PC Pro | 
| Windows CE versions: | 1.0 and later | 
| Complete documentation: | Visual C++ documentation | 
BOOL Lookup( ARG_KEY key, VALUE& rValue ) const;