How to create a virtual printer in Windows?

Question

I want to create a virtual printer driver for Windows. Where should I start? The WDK has some printing drivers examples, but nothing I can use. MSDN doesn't seem to be very helpful.

There are a lot of virtual printers for Windows out there (mostly they generate PDFs), how do they do it?

Any links to the documentation I seem to miss are appreciated.

Thanks.

Answer 1

When I did it (which about 12 years ago) I started with the postscript driver sample, replaced all the postscript-specific stuff (in my case, to write to a bitmap instead of generating postscript commands).

I also wrote a custom print monitor (the driver writes to the spooler, which write to a monitor): my monitor wrote to a file instead of e.g. to the parallel port.

However, printer driver architecture and/or the set of sample drivers may have changed since then.

Answer 2

One of the drivers you mention is open-source (GPL), maybe you could explore its source or adapt it: http://www.pdfforge.org/products/pdfcreator/download

Answer 3

You can look to the 'minidriver' development in the from Microsoft (Microsoft MDT), that might help depending on your exact needs. If the port you need to deal with (ie: you are going to take the data from an existing printer driver and want to process) you could look to the source code for RedMon. It doesn't support Vista/Win7 but might point you in the right direction.

Answer 4

This book maybe help you Developing Drivers with the Windows® Driver Foundation

A list of my links

http://www.codeproject.com/KB/system/driverdev.aspx
http://www.microsoft.com/whdc/ddk/winddk.mspx
http://jungo.com/wdusb.html
http://msdn.microsoft.com/en-us/library/ms791686.aspx
http://channel9.msdn.com/posts/Rory/Driver-Development-and-Much-More-With-Mike-Calligaro/

Answer 5

Someone else already mentioned PDFCreator. Here's a more specific link to their code that's creating the printer, port and monitor. Despite being in VB, I can follow it as someone more used to C++, so I guess you can too. modPrinter.bas does the leg work. modMain.bas, from about line 28 onwards, calls into modPrinter.bas.

Answer 6

PDF forge is the way to go >>

Answer 7

Create a Print Port Monitor, associate that port with a printer, and you'll get the data the printer driver sends to the port.

working example of how is it done in Cpp and java can be found here: http://www.mms-computing.co.uk/uk/co/mmscomputing/device/printmonitor/index.php