Makes default_page_setup the default page setup for op.
This page setup will be used by PrintOperation.run, but it can be overridden on a per-page basis by connecting to the request-page-setup signal.
a gtk.PageSetup, or NULL
2.10
Makes default_page_setup the default page setup for op.
This page setup will be used by PrintOperation.run, but it can be overridden on a per-page basis by connecting to the request-page-setup signal.