What values did You get? On every device it's different.
In emu in CP/Buttons it shows only up/down rocker scrolling repeat rate, not the keyboard itself (but it's the same registry).
In the registry:
Delay before first delay - MIN: 250, MAX: 1000 (InitialDelay)
Repeat rate - MIN: 0, MAX: 30 (RepeatRate)
If repeat rate is set in CP to 0 it won't repeat in CP icon selection with standard keyboard or d-pad, so it must be it.
If You'll find my answer satisfactory or helpful - mark it as answered! Thank You.
I got the same values that are set in the control panel. That is: if I change the setting in the control panel, then I can read it with KeybdGetDeviceInfo. Yes, they always fit in the MIN and MAX values that you wrote.
Being able to change the up/down/left/right rocker repeat rate is all I need.
We're stuck with this problem, Mal. Maybe someone from Microsoft could help us?