I started to test OCR (PDF-XChange Pro 2.5.205) and took a look at the manual (205 pages, created 08.02.2011):
Page 56 wrote: Such functionality requires OCR (optical
character recognition) functionality which is not currently available.
We hope to make this available in a subsequent release - late in 2008 or early 2009.
Page 197 wrote:OCR-XChange - Add Optical Character Recognition functionality to your applications - coming late 2008
Peter