GtkPrintStatus status;
status = gtk_print_operation_get_status (print->op);
if (status == GTK_PRINT_STATUS_GENERATING_DATA)
print->n_pages_to_print = gtk_print_operation_get_n_pages_to_print (print->op);
GtkPrintStatus status;
status = gtk_print_operation_get_status (print->op);
if (status == GTK_PRINT_STATUS_GENERATING_DATA)
print->n_pages_to_print = gtk_print_operation_get_n_pages_to_print (print->op);