A3	Paper size of 297 × 420 mm.
A4	Paper size of 210 × 297 mm, 8.26 × 11.69 inches.
A5	Paper size of 148 × 210 mm.
B5	Paper size of 182 × 257 mm, 7.17 × 10.13 inches.
Custom	Custom paper size.
Executive	Paper size of 7.5 × 10 inches, 191 × 254 mm.
Horizontal	Both sides of each sheet of paper are used for printing. The paper is turned over its horizontal edge.
Landscape	The page's width is greater than its height.
Legal	Paper size of 8.5 × 14 inches, 216 × 356 mm.
Letter	Paper size of 8.5 × 11 inches, 216 × 279 mm.
Portrait	The page's height is greater than its width.
Simplex
Vertical	Both sides of each sheet of paper are used for printing. The paper is turned over its vertical edge.

Static properties

Default	Return the name of the default printer.
List	Return the list of printers.

Properties

CollateCopies	Return or set if multiple copies are collated or not.
CopyCount	Return or set the number of copies that will be printed.
Count	Return or define the number of pages in the printed document.
Duplex	Return or set the printing duplex mode.
FirstPage	Return or set the first page that must be printed.
FullPage	Return or set if drawing page will be done inside the margins (FullPage is FALSE), or on the entire page (FullPage is TRUE).
GrayScale	Return or set if printing is done by using gray scale, or full colors.
LastPage	Return or set the last page that must be printed.
Name	Return or set the printer name.
NumCopies	Return or set the number of copies that will be printed.
Orientation	Return or set the printing orientation.
OutputFile	Return or set the path of the PDF or PostScript output file.
Page	Return the current page that must be printed.
Paper	Return or set the kind of paper used for printing.
PaperHeight	Return or set the custom paper height in millimeters.
PaperWidth	Return or set the custom paper width in millimeters.
Resolution	Return or set the printer resolution, in DPI (Dots Per Inches).
ReverseOrder	Return or set if the document pages will be printed in reverse order.

Methods

Cancel	Abort the current printing job.
Configure	Open the printer configuration dialog.
Print	Run the printing process.

Events

Begin	This event is raised when the print starts.
Draw	This event is raised for each page that must be printed.
End	This event is raised when the print is finished.
Paginate	This event is raised so that you can paginate your document in the background.

To print a document:

Instanciate a Printer object.
Call the Configure method. A printing configuration dialog is displayed.
Call the Print method to run the printing process.
The Begin event is raised when the print starts. You should define the number of pages to print inside the Begin event handler, by setting the Count property.
If you don't define the Count property during the Begin event handler, the Paginate event will be raised again and again until that property is finally defined.
The Draw event is raised for each page that must be printed.
The End event is raised when the print terminates.

Paint.Begin is automatically called just before the Begin event, and Paint.End just after the End event.

You don't have to call them "by hand".

Printer (gb.qt4)