Most print preview solutions use the MFC Doc/View architecture which limits it usefulness outside of c++. I found an article where a Delphi programmer used Enhanced Meta Files wrapped in a custom header and packaged together to create a print preview control. After a little more searching, It looks like using EMFs is a solution that would work.
Some people suggest to create the document in Word or HTML and use Word or a browser to view it. Indeed, I have rendered documents to HTML and used the IE UDF to display the contents and/or print them. Not quite as ideal as one would like.
Using GRS's printwin.au3 as a start, I came up with a print preview solution which others may be able to expand upon