Serial Port I/O Function: Cancels any I/O in progress to the specified port.
Module: USE IFPORT
Syntax
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.
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.
Compatibility
CONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIB
See Also
Communications and Communications Functions in the Microsoft* Platform SDK, Building Applications: Using the Serial I/O Port Routines
Example
USE IFPORT
INTEGER(4) iresult
iresult = SPORT_CANCEL_IO( 2 )
END