Click above to get retro games delivered to your door ever month!

SetEnvironment       Set Device Information

short SetEnvironment(lpPortName, lpEnviron, nMaxCount)
LPSTR lpPortName; /* Name of port */
LPSTR lpEnviron; /* New Data */
WORD nMaxCount; /* Bytes to copy or zero to delete */

Returns:        Number of bytes copied to buffer or zero if environment
                can't be found, -1 if environment is deleted.