SPORT_CANCEL_IO (W*S)

Serial Port I/O Function: Cancels any I/O in progress to the specified port.

Module

USE IFPORT

result = SPORT_CANCEL_IO (port)

port	(Input) Integer. The port number.

Results

The result type is INTEGER(4). The result is zero if successful; otherwise, a Windows* error value.

NOTE

This call also kills the thread that keeps an outstanding read operation to the serial port. This call must be done before any of the port characteristics are modified.

Example

USE IFPORT
INTEGER(4) iresult
iresult = SPORT_CANCEL_IO( 2 )
END