On Mon, 27 Apr 2020 16:25:10 +0200, R.Wieser wrote:

It looks like that, yes. I was just assuming (hoping) that the low-level
keyboard hook could at least /see/ those keys (so I knew which ones to try
in the "Scancode map" I spoke of earlier).

What's more annoying is that, the kernel ignores injected power management
scancodes when sent using SendInput(). This makes it impossible to have a
custom key or shortcut to act as power management key, unless we manually
call a power action function ourselves.