Windows 3.1 Device Drivers (ddag31qh.hlp) (Table of Contents; Topic list)
Important Notice
The pages on this site contain documentation for very old MS-DOS software, purely for historical purposes. If you're looking for up-to-date documentation, particularly for programming, you should not rely on the information found here, as it will be woefully out of date.
cevtGet
                                                     Up Next Previous
────────────────────────────────────────────────────────────────────────────
 
WORD cevtGet(cid, evtmask)
int cid;
int evtmask;
 
The cevtGet function retrieves and then clears the event mask for a
communications device. USER calls this function whenever an application
calls the GetCommEventMask function (USER.209).
 
Parameter  Description
────────────────────────────────────────────────────────────────────────────
 
cid        Identifies the communications device.
 
evtmask    Specifies which events in the current event mask to disable. This
           parameter can be any combination of the following values.
 
           Value       Meaning
           ─────────────────────────────────────────────────────────────────
           EV_BREAK    Enables detection of a break upon input.
 
           EV_CTS      Enables detection of the clear-to-send (CTS) signal.
 
           EV_DSR      Enables detection of the data-set-ready (DSR)
                       signal.
 
           EV_ERR      Enables detection of a line-status error. Line-status
                       errors are CE_FRAME, CE_OVERRUN, and CE_RXPARITY.
 
           EV_PERR     Enables detection of a printer error on a parallel
                       device. Errors are CE_DNS, CE_IOE, CE_LOOP, and
                       CE_PTO.
 
           EV_RING     Indicates the state of ring indicator during the last
                       modem interrupt. (Use EV_RINGTE to detect when a
                       phone ring has occurred.)
 
           EV_RLSD     Enables detection of the receive-line-signal-detect
                       (RLSD) signal.
 
           EV_RXCHAR   Enables detection of any character received and
                       placed in the receive queue.
 
           EV_RXFLAG   Enables detection of the event character received and
                       placed in the receive queue. The event character is
                       specified in the EvtChar member of the DCB
                       structure.
 
           EV_TXEMPTY  Enables detection of when the last character in the
                       transmit queue is sent.
 
Return Value
 
The return value is the current event word as set by the cevt function.
 
Comments
 
The export ordinal for this function is 12.
 
See Also
 
cevt