Duplex setting not working?

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When printing a duplex document, duplex seems to
always flip horizontally whether set to "flip vertically" or "flip horizontally."  I'm setting the duplex mode using SetupCustomPrinter.  I suspect this is a bug.

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mbosio Members Profile Find Members Posts Beginner Joined: 18 Oct 11 Status: Offline Points: 1	Post Options Post Reply Quote mbosio Report Post Thanks(0) Quote Reply Topic: Duplex setting not working? Posted: 18 Oct 11 at 4:42AM
	When printing a duplex document, duplex seems to always flip horizontally whether set to "flip vertically" or "flip horizontally." I'm setting the duplex mode using SetupCustomPrinter. I suspect this is a bug.

Ingo Members Profile Find Members Posts Moderator Group Joined: 29 Oct 05 Status: Offline Points: 3530	Post Options Post Reply Quote Ingo Report Post Thanks(0) Quote Reply Posted: 18 Oct 11 at 6:08PM
	Hi! If it's a bug please use the official website for this. Here it's only the user-user-forum ;-) Cheers and welcome here, Ingo

AndrewC Members Profile Find Members Posts Moderator Group Joined: 08 Dec 10 Location: Geelong, Aust Status: Offline Points: 841	Post Options Post Reply Quote AndrewC Report Post Thanks(0) Quote Reply Posted: 19 Oct 11 at 8:50AM
	It is more likely a bug in the printer driver. This is a common problem and it all depends on how well the printer driver is written. A quick search on Google shows that setting this value on some printer drivers doesn't even select duplex. http://nicholas.piasecki.name/blog/2008/11/programmatically-selecting-complex-printer-options-in-c-shar/ This article is very interesting reading. We have added 2 functions in QPL 8.12 that allow you to read the current DEVMODE and also set the DEVMODE just before printing which is basically doing what is described in the article. Printer Drivers are written to interface with Windows via the DEVMODE structure but many drivers add extra information to the end of the DEVMODE structure to define special functions such as stapling , collating and many of them seem to use their one memory for storing and retrieving these settings. Their GUI Printer Setup Dialog box knows how to communicate correctly with the DEVMODE structure but they don't document the fields, values or codes required for others. Unfortunately QPL is relying on the standard DEVMODE structure to set these values in DEVMODE but not all printer drivers respond in the same way or even at all. What version of QPL are you using ? Andrew.