Not at this time. In an app I’m building for myself, I call wrapper functions that build an event table that the touch handler’s are expecting and that works well for touch and tap events. But this would need to be built into the widgets, which by the way are open source so you could download it from our github repository and extend widgets to support controllers.
If you feel that this would be a good feature for us to support I would recommend visiting http://feedback.coronalabs.com and putting in a request there and get as many people to vote it up as possible. From my experience so far, trying to get the controllers to interact with things expecting touch events is a serious challenge.
That said, some widgets, like widget.newButton can have their event handler’s called from the button handler like I talked about above. But I find that generally it’s easier to deal with my own graphic buttons using sprites and traditional touch handlers.