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#define INCL_DOSDEVICES
 
typedef struct _LINECONTROL {    /* lnctl */
    BYTE bDataBits;
    BYTE bParity;
    BYTE bStopBits;
    BYTE fTransBreak;
} LINECONTROL;
 
The LINECONTROL structure contains line characteristics for a device.
 
Field        Description
────────────────────────────────────────────────────────────────────────────
 
bDataBits    Specifies the number of data bits to be used. It can be one of
             the following values:
 
             Value  Meaning
             ───────────────────────────────────────────────────────────────
             0x05   5 data bits
 
             0x06   6 data bits
 
             0x07   7 data bits
 
             0x08   8 data bits
 
bParity      Specifies the type of parity checking. It can be one of the
             following values:
 
             Value  Meaning
             ───────────────────────────────────────────────────────────────
             0x00   No parity
 
             0x01   Odd parity
 
             0x02   Even parity
 
             0x03   Mark parity  (parity bit always 1)
 
             0x04   Space parity (parity bit always 0)
 
bStopBits    Specifies the number of stop bits used. It can be one of the
             following values:
 
             Value  Meaning
             ───────────────────────────────────────────────────────────────
             0x00   1 stop bit
 
             0x01   1.5 stop bits (valid only with 5-bit word length)
 
             0x02   2 stop bits (not valid with 5-bit word length)
 
fTransBreak  Specifies whether the device is transmitting a break character.
             If this field is 0x00, a break character is not transmitted. If
             it is 0x01, a break character is transmitted.
 
Comments
 
The ASYNC_GETLINECTRL function (0x0001, 0x0062) uses all four bytes. The
ASYNC_SETLINECTRL function (0x0001, 0x0042) uses only the first three
bytes.
 
See Also
 
ASYNC_GETLINECTRL, ASYNC_SETLINECTRL
 
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