Question

I used to have postcript printing working perfectly in Emacs 21 in Windows+Cygwin, but after upgrading to Emacs 23, I am receiving the following error in the minibuffer:

Opening output file: invalid argument, C:/PDFCreator:

My current .emacs contain the current relevant statements:

(require 'ps-print)
(setq ps-spool-duplex t)
(setq ps-auto-font-detect nil)
(setq ps-print-color-p nil)

It used to have the following line as well:

(setq ps-lpr-command "qprt")

But it generates a similar error:

Searching for program: no such file or directory, qprt

Any idea what changed in Emacs 23 and how I can bring printing back to life?

(at this point I am only interested in printing to the default Windows printer, which is PDFCreator).

Answer 1

From the Emacs Wiki PrintingFromEmacs, the following configuration is recommended.
Where lpr is the Cygwin lpr version.

  (setenv "PRINTER" "PDFCreator")
    (cond ((eq system-type 'windows-nt)
       (setq ps-printer-name "PDFCreator")
       (setq ps-printer-name-option "-d")
       (setq ps-lpr-command "/bin/lpr")))

You could also use the Ghostscript configuration there and select the PDFCreator printer from the popup. Adjusting your GS_LIB and your ghostscript binary location accordingly.

(setenv "GS_LIB" "e:/tools/GSTools/gs8.14/gs8.14/lib;e:/tools/GSTools/gs8.14/fonts")
   (setq ps-lpr-command "e:/tools/GSTools/gs8.14/gs8.14/bin/gswin32c.exe")
   (setq ps-lpr-switches '("-q" "-dNOPAUSE" "-dBATCH" "-sDEVICE=mswinpr2"))
   (setq ps-printer-name t)