Since it's cited as cross-platform, including non-Windows screenshots would be helpful https://github.com/brisklib/brisk#screenshots

Also, I wasn't able to readily find any information about keybindings for the widgets, e.g. the way some frameworks use "&Monday" to make alt-m act on that checkbox https://github.com/brisklib/brisk/blob/v0.9.3/examples/showc...

I did see your "unhandled" event handler doing its own keybinding dispatch <https://github.com/brisklib/brisk/blob/v0.9.3/examples/calc/...> but I hope that's not the normal way to do keybinding