Printer.Duplex (gb.qt4)
Property Duplex As Integer
Return or set the printing duplex mode.
This property can take one of the following values:
| Printer.Simplex | Single sided (simplex) printing only. | 
| Printer.Horizontal | Both sides of each sheet of paper are used for printing. The paper is turned over its horizontal edge. | 
| Printer.Vertical | Both sides of each sheet of paper are used for printing. The paper is turned over its vertical edge. |