[ NoAccessorMethod ]
[ Version ( since = "2.10" ) ]
public int n_pages { get; set; }
The number of pages in the document.
This must be set to a positive number before the rendering starts. It may be set in a begin_print signal hander.
Note that the page numbers passed to the request_page_setup and
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.