Eval / RegExp listen with Autohotkey - autohotkey

Question

I think this must be possible but I can't find it in the documentation anywhere on autohotkey
I want to do something like:
[a-z0-9]::
SoundPlay, %A_WinDir%\Media\[\1].wav
SoundPlay *-1
i.e. listen for all keys a to z and 0-9 find the relevant wav file (a.wav etc..) and play it. If it can't be found Play a default sound.
Is this way out of AHK's league? Should I stick to doing this in python??!
Many thanks in advance

Answer 1

You can use the Hotkey Command to assign all possible hotkeys to the label.
The first loop here uses a trick with converting values to their ASCII codes, doing math, and converting them back to characters. The logic works like, "What is the 5th character after 'a'?" -- to which it replies 'f'.
#Persistent
Loop, 26
Hotkey, % Chr(Asc("a") + A_Index - 1), MyLabel
Loop, 10
Hotkey, % A_Index - 1, MyLabel
return
MyLabel:
MsgBox You pressed %A_ThisHotkey%
return

Answer 2

I'm not aware of a way to use a regex to specify the hotkey, but this is how I've done it in one of my scripts:
#::
a::
b::
c::
; (all other alpha keys...)
; Pass key on, if not in subscription list
If(in_edit_screen())
{
; Handle caps lock
If(GetKeyState("Capslock", "T"))
{
; Send uppercase letter
StringUpper key, A_ThisHotkey
Send %key%
}
Else
{
Send %A_ThisHotkey%
}
Return
}
; etc.
Return
This is part of a routine that's called whenever a certain window is focused, but the window in question has a few different modes; in one of those modes (indicated by the in_edit_screen flag), I want to just pass the keys through, while in another mode, I want the keys to do something special. A_ThisHotkey is the variable that tells the routine which key/key combination the user actually pressed.

Answer 3

Why not launch a script where you use:
Input, CI_KeyVar, I L1
and then read-out which key was pressed (variable = CI_KeyVar), do your thing (check if the ascii code falls between 0 and Z because this input will act on any input) and re-launch the script to wait for the next key press....
The way out would be to trigger on e.g. the esc key, so the script stops.