int EscapeCommFunction(nCid,nFunc)
This function directs the communication device specified by the nCid parameter to carry out the extended function specified by the nFunc parameter.
| Parameter | Type/Description |
| nCid | int Specifies the communication device to carry out the extended function. The OpenComm function returns this value. | ||
| nFunc | int Specifies the function code of the extended function. It can be any one of the following values: | ||
| Value | Description | ||
| CLRDTR | Clears the data-terminal-ready (DTR) signal. | ||
| CLRRTS | Clears the request-to-send (RTS) signal. | ||
| RESETDEV | Resets the device if possible. | ||
| SETDTR | Sends the data-terminal-ready (DTR) signal. | ||
| SETRTS | Sends the request-to-send (RTS) signal. | ||
| SETXOFF | Causes transmission to act as if an XOFF character has been received. | ||
| SETXON | Causes transmission to act as if an XON character has been received. | ||
The return value specifies the result of the function. It is zero if it is successful. It is negative if the nFunc parameter does not specify a valid function code.