thank you for the answer! this already opens up a lot of possibilities, actually.
what i meant was if there was a way of having, for example, an animated field widget that displayed text whenever the pointer went over a button. and i figured the way to do this was such field having something like:
on view do if rect.overlaps[pointer (((any button)))] me.text:"pointer over some button" else me.text:"pointer over any other thing" end