_COMSTAT

include vcomm.inc

_COMSTAT    STRUC
BitMask         DD  ?
cbInque         DD  ?
cbOutque        DD  ?
_COMSTAT    ENDS
 

Contains information about the status of a communications channel and the amount of data in the receive and transmit queues. This structure is filled by _VCOMM_ClearCommError and _VCOMM_GetCommQueueStatus.

BitMask

The communications state. Can be zero or more of these values:

Value	Meaning
fCtsHold	Transmission is suspended because CTS is off.
fDsrHold	Transmission is suspended because DSR is off.
fRlsdHold	Transmission is suspended because RLSD is off.
fXoffHold	Transmission is suspended because the XOFF character was received.
fXoffSent	An XOFF handshaking character has been sent.
fEof	The end-of-file (EOF) character was received.
fTxim	An "immediate" character, specified in a previous call to the _VCOMM_TransmitCommChar service, is waiting to be transmitted.

cbInque and cbOutque

Number of characters in the receive and transmit queues.

See Also

_VCOMM_ClearCommError, _VCOMM_GetCommQueueStatus, _VCOMM_TransmitCommChar