How to stop the keyboard keys Space, Return and Enter from being able to press Widget buttons?

[Dee_Kay_Bee]

I don’t think it is possible for the native buttons, see the last response to this: UMG Spacebar, Enter & Face Button Down all execute "On Pressed" - #2 by Fronzelneekburm.

I tried overriding OnKeyDown, but the space button is not even passed through to that, so it must be handled beforehand.