PXFGETATTY

POSIX Subroutine: Tests whether a file descriptor is connected to a terminal.

Module: USE IFPOSIX

Syntax

CALL PXFGETATTY (ifildes, isatty, ierror)

ifildes
(Input) INTEGER(4). The file descriptor.

isatty
(Output) LOGICAL(4). The returned value.

ierror
(Output) INTEGER(4). The error status.

If successful, ierror is set to zero; otherwise, an error code.

If file descriptor ifildes is open and connected to a terminal, isatty returns .TRUE.; otherwise, .FALSE..

Compatibility

CONSOLE STANDARD GRAPHICS QUICKWIN GRAPHICS WINDOWS DLL LIB