SPORT_CANCEL_IO (W*32, W*64)

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.

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.

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