LPFKLIGHT (Set/Reset Key Lights)

Kernel and Subsystems Technical Reference, Volume 2

LPFKLIGHT (Set/Reset Key Lights)

Purpose

Sets/resets key lights.

Syntax

#include <sys/inputdd.h>

int ioctl (FileDescriptor, LPFKLIGHT, Arg)
int FileDescriptor;
ulong *Arg;

Description

The LPFKLIGHT ioctl subroutine call illuminates and darkens lights associated with keys in the LPFK array. The Arg parameter points to a bit mask (one bit per key) that indicates the state (1 = on, 0 = off) of the key's light.

Parameters

FileDescriptor	Specifies the open file descriptor.
Arg	Specifies the address of a bit mask (one bit per key) that indicates the state of the key lights (0 = off, 1 = on).

Implementation Specifics

This ioctl subroutine call is part of Base Operating System (BOS) Runtime.