No, the Postscript functions in Foxit Quick PDF Library such as DrawPostScriptXObject will only embed existing postscript commands into a PDF. This is mainly done for printers. Most, if not all PDF viewers do not contain any Postscript rendering functionality so you page may be technically correct but there is not viewer that can render it.
If you are trying to convert Postscript to PDF then and render it on screen then you will need to use a different program such as Ghostscript.