Currently I use following autohotkey script to change keyboard layout using the CapsLock button. SetCapsLockState, AlwaysOff +CapsLock::CapsLock #SingleInstance force CapsLock::Send, {ALTDOWN}{SHIFTDOWN}{SHIFTUP}{CTRLUP}{ALTUP} return I want CapsLock LED be turned on when layout is Persian and off when it is Englsih. Is it possible? Indeed I want LED be switched wile CapsLock remains off.