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::
             


        

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.