Sets/resets key lights.
int ioctl (FileDescriptor, LPFKLIGHT, Arg) int FileDescriptor; ulong *Arg;
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.
|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).|
This ioctl subroutine call is part of Base Operating System (BOS) Runtime.