A few years ago (has it REALLY been that long?) I was playing with x-show-tooltip so that I could display a tooltip at the given point.

I was mostly interested in this so that I could build just in time code completion.  This way one could have a function call:

foo( 

And type something like C-enter to lookup the previous symbol and show method argument documentation in a tooltip.

..... anyway. 

I needed away to have x-show-tooltip generate under (point).  Is this possible?

If I remember I can manually position the tooltip if I know the on screen x/y pixel cartesian position of (point) but I don't think this was possible either.

This was with an early version Emacs 21...  Anyone know a solution to this?  Have features been added to Emacs 22 to enable this?

Kevin