gtk/print.go
func (po *PrintOperation) PrintOperationGetError() error {
	var err *C.GError = nil
	C.gtk_print_operation_get_error(po.native(), &err)
	defer C.g_error_free(err)
	return errors.New(C.GoString((*C.char)(err.message)))
}
func (po *PrintOperation) PrintOperationGetError() error {
	var err *C.GError = nil
	C.gtk_print_operation_get_error(po.native(), &err)
	defer C.g_error_free(err)
	return errors.New(C.GoString((*C.char)(err.message)))
}
// GetError() is a wrapper around gtk_print_operation_get_error().