How to handle the recipients structure

[tt376]

Thank you for developing many wonderful libraries.

I used the "libpff_message_get_recipients" function to get the recipients structure from the message.
When I tried to get detailed information from recipients, all functions related to recipients were deprecated.
I wrote the code below to enumerate the recipients, but is this redundant writing recommended?
Why is the recipients function deprecated?

libpff_item_t* recipients = NULL;
libpff_message_get_recipients(sub_message, &recipients, NULL);
int number_of_recipient;
libpff_item_get_number_of_record_sets(recipients, &number_of_recipient, NULL);
for (int i = 0; i < number_of_recipient; i++)
{
	libpff_record_set_t* recipient_record_set = NULL;
	libpff_item_get_record_set_by_index(recipients, i, &recipient_record_set, NULL);

	libpff_record_entry_t* recipient_name_record_entry = NULL;
	libpff_record_set_get_entry_by_type(recipient_record_set, LIBPFF_ENTRY_TYPE_RECIPIENT_DISPLAY_NAME, 0, &recipient_name_record_entry,LIBPFF_ENTRY_VALUE_FLAG_MATCH_ANY_VALUE_TYPE, NULL);

	uint8_t recipient_name[128];
	libpff_record_entry_get_data_as_utf8_string(recipient_name_record_entry, recipient_name, 128, NULL);
	cout << DataConverter::utf8_to_multi_winapi(string(reinterpret_cast<char*>(recipient_name), 128)) << endl;
	(Omitted memory release)
}