TRichView.com

How can I select a printer before printing?
Select and set printer properties?

RVPrint prints using the current printer settings.
You can change them by executing TPrinterDialog, or by assigning Printer.PrinterIndex.
You can change properties of the current printer using WinAPI: http://www.trichview.com/forums/viewtopic.php?t=10

A few minutes before I fell asleep I also had the idea relating to TPrinterDialog

Thank you (also for the other solutions)!