"keyedUp" cross-platform woes

[Richmond]

On 30/11/12 15:18, Richmond wrote:
> Now the ALT-KEY yields a "magic number" (keyDown) number
> on Windows and Linux, and that's fine and dandy, but, as has been 
> pointed out several times, both
> by myself and others, that doesn't happen on a Mac and Livecode seems 
> unable to work out when
> the ALT-KEY is down . . .
>
> . . . just wondering whether, despite that, the ALT-KEY does actually 
> have a unicode number
> on a Mac?

The soup thickens . . .

So: Macintosh does NOT return a rawKeyDown code for modifier keys,

BUT

Macintosh does show that a modifier key is pressed when a button (or 
other object) gets
a mouseDown or a mouseUp:

on mouseUp
    if the altKey is down then
      do something
    end if
end mouseUp

keysDown doesn't give any joy with modifier keys on Macintosh.

-------------------------------------------------------------

and I've written the substance of this before:

as modifier keys modify keyboard input on Macintosh computers (just as 
they do on
non-Mac computers running other operating systems) the OS, obviously, 
does detect
those keyDowns . . .

So, why is Livecode able to detect modifier rawKeyDowns on Windows and 
Linux,
but is quite unable to detect modifier rawKeyDowns on Macintosh?