No apparent way to detect key up events

[snydej]

I see that there is on_key_down and that it works for detecting when, say for example, shift is pressed, but there doesn't appear to be a corresponding way to know when a key has been released. Am I missing something?

[snydej]

I've spent some time digging in and now see that you don't have access to those events and cannot feasibly implement such functionality. I've also seen your note in the docs about ipyevents. It sadly doesn't work on my machine for reasons I don't understand yet (obviously not your problem). If I find a workaround in the future I might post it here for the benefit of any that might stumble upon this but for now I'm closing this issue.

Thank you for building ipycanvas. Despite my minor issues, it's been great to use so far and I expect to use it much more in the future!