Yes, on-release will register a release of the shift key. But I am not sure about the eventual purpose.
On Mar 14, 2013, at 9:56 PM, Mitchell Wand wrote: > Does releasing a shift key cause a key event in 2htdp/universe ? I want to > distinguish between ordinary mouse click and shift click. What I'd like is > to have a sequence like > > keyevent: "shift" (or "rshift") > mouse-event: button-down [or whatever] > keyevent: ??? (I release the shift key) > > I suppose I could experiment to find out, but it's quicker to ask :) > > --Mitch > > > > > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users ____________________ Racket Users list: http://lists.racket-lang.org/users
