Property printer.numCopies contains the number of copies to be printed. The default value is 1.

Qt handles the number of copies in a rather strange way: the value you obtain by reading property printer.numCopies is not the value you have set but reports the number of times you should draw the document in order to achieve the desired effect. On Windows, Mac OS X and X11 systems that support CUPS, reading property printer.numCopies always return 1 because these systems internally handle the number of copies.