PrintOperation.nPagesToPrint

The number of pages that will be printed.

Note that this value is set during print preparation phase ([gtk.types.PrintStatus.Preparing]), so this value should never be get before the data generation phase ([gtk.types.PrintStatus.GeneratingData]). You can connect to the #GtkPrintOperation::status-changed signal and call [gtk.print_operation.PrintOperation.getNPagesToPrint] when print status is [gtk.types.PrintStatus.GeneratingData]. This is typically used to track the progress of print operation.