Type: Integer
The duplex property of the Printer class contains the duplex value; that is, the number of sides on which the paper is printed.
The default value is Duplex_Simplex; that is, printing is single-sided.
The duplex options provided by the Printer class are listed in the following table.
| Printer Class Constant | Integer Value | Description |
|---|---|---|
| Duplex_Horizontal | 3 | Prints on both sides of the paper to read by flipping over like a notepad (that is, the duplex Short Side setting |
| Duplex_Simplex | 1 | Print is output to one side of the paper only |
| Duplex_Vertical | 2 | Prints on both sides of the paper to read by turning like a book (that is, the duplex Long Side setting) |
The code fragment in the following example shows the use of the duplex property.
app.printer.duplex := app.printer.Duplex_Horizontal;
This property cannot be modified after printing has begun. For details about retaining the setting of this property when the printer is closed, see the Printer class retainCMDValues property.