Gtk.PrintOperation:n-pages
"n-pages" Number : Read / Write
The number of pages in the document.
This <emphasis>must</emphasis> be set to a positive number before the rendering starts. It may be set in a Gtk.PrintOperation::begin-print signal hander.
Note that the page numbers passed to the Gtk.PrintOperation::request-page-setup and Gtk.PrintOperation::draw-page signals are 0-based, i.e. if the user chooses to print all pages, the last ::draw-page signal will be for page @n_pages - 1.
Since 2.10