Sets the value of gtk.types.PRINT_SETTINGS_PAPER_FORMAT, gtk.types.PRINT_SETTINGS_PAPER_WIDTH and gtk.types.PRINT_SETTINGS_PAPER_HEIGHT.
a paper size
Sets the value of gtk.types.PRINT_SETTINGS_PAPER_FORMAT, gtk.types.PRINT_SETTINGS_PAPER_WIDTH and gtk.types.PRINT_SETTINGS_PAPER_HEIGHT.