ComMdmSet

ComMdmSet sets (asserts) the modem control lines for the specified port. This function will assert the modem control lines specified by the bits in the ModemControl parameter, which is a mask of bits found in COMIO.H.


Syntax:          err_t far ComMdmSet(handle_t Handle, int ModemControl) 
Parameters:      handle_t Handle - The handle returned via a successful ComOpen.  
                 int ModemControl - An integer mask used to indicate which modem 
                                    control signals are to be cleared (de-asserted) 
Returns:         0 - if successful 
                 Any other value indicates an error condition.  
                 ENOTYOURS - The specified port has not been acquired by the calling 
                             application.  
Comments:        ComOpen() must first be called in order to get a valid handle to the 
                 communications port.  

                 This function does not check for interactions between hardware flow 
                 control and any user modem signal manipulation.  Be careful not to 
                 accidently interfere with the flow control use of RTS.