I think I recall Steve or someone setting that up, maybe under a different name. Try wiki help places that discuss console or try a search here. Guess about a year ago? I remember requesting mouse polling for console, while, I am pretty sure it was Steve, was doing a bunch of improvements to console.
Update: Eh couldn't find anything about inputs, if you don't Console Only you might have to set _Source to Console? Don't know for sure but _DEST and _SOURCE were discussed under Wiki on Console.
Update2: links from search that might be relevant
inp might be it!
https://qb64forum.alephc.xyz/index.php?topic=1535.msg107483#msg107483WIP console enhancements
https://qb64forum.alephc.xyz/index.php?topic=1540.msg107531#msg107531another about keypress (CINP):
https://qb64forum.alephc.xyz/index.php?topic=4181.msg135462#msg135462That's most relevant check of first of 3 pages in Search for "console" and SMcNeill member.
If you need more try search yourself.