Casio IT-2000W Technical Reference Manual page 119

COMSTAT structure
typedef struct tagCOMSTAT {
BYTE status;
UNIT cbInQue;
UNIT cbOutQue;
} COMSTAT;
The COMSTAT structure is used to store information about the communication device.
< Members >
status Indicates the transfer status. This member consists of the following flags.
CSTF_CTSHOLD
CSTF_DSRHOLD
CSTF_RLSDHOLD
CSTF_XOFFHOLD
CSTF_XOFFSENT
CSTF_EOF
CSTF_TXIM
cbInQue Indicates the number of characters in the reception buffer.
cbOutQue Indicates the number of characters in the transmission buffer.
/* cmst */
/* transfer status */
/* Number of characters in the reception queue */
/* Number of characters in the transmission queue */
Not supported
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