Window-modal sheet variant of capi:simple-print-port?

Hi all,

Does anyone know of a way to print an output pane on OS X as with
simple-print-port, that would display the print dialog as a
window-modal sheet?  Otherwise, it looks like I either need to roll my
own simple-print-port-w/continuation, or accept that a print dialog
holds up the application.

(Aside from this hitch, I'm _very_ pleased with the printing of output
panes, especially printing to PDF.  It's wonderful to be able to
generate PDFs with vector graphics and selectable text just by virtue
of using arrow pinboard objects and write-string.)

Thanks,
//JT

-- 
=====================
Joshua Taylor
tayloj@cs.rpi.edu, jtaylor@alum.rpi.edu

"A lot of good things went down one time,
  back in the goodle days."
    John Hartford