Finding the scan code of FN Key

Question

I want to use Fn+S to emulate Ctrl+S, so far this is my code:

 #InstallKeybdHook
 #Persistent

  SC126 & s::
     Send ^{s}
  return

My problem is that I don't know the Fn key's scan code.
How can I find it?

Answer 1

The Fn key does not have a scan code.

The keyboard driver does not expose the Fn key to the operating system, so basically your operating system (and therefore AutoHotkey) does not know that it exists.

When you press the Fn key in combination with a supported key, the keyboard driver reports a single key press to the operating system with a different scan code. Basically, it tells the operating system that a different key was pressed.

Answer 2

When you press the Fn key in combination with a supported key, the keyboard driver reports the presses to the operating system.

You can find the fn key scan code

1. Go to tray icon
2. Right click script
3. Click open
4. Click view and then key history and script info ( alternatively "Ctrl + k")
5. Once you press the key you can refresh (f5) and scroll to bottom to see the codes