Мое приложение отправляет электронные письма с Outlook и Thunderbird (версия 68.6.0) через MAPI. Я получаю квитанцию только в том случае, если письма отправляются в Outlook, а не в Thunderbird. mapiMessage.flags = MAPI_RECEIPT_REQUESTED; // Set receipt flag Пожалуйста, кто-нибудь может помочь с запросом чека в Thunderbird? </p>
<pre><code>// using System.Runtime.InteropServices;
void button1_Click(object sender, EventArgs e)
{
try { SendMail(new List<Recipient> { new Recipient { Name = "test@gamil.com", RecipClass = RecipientType.To } }, "Subject", "Body"); }
catch (Exception ex) { MessageBox.Show($"{ex}"); };
}
[DllImport("MAPI32.DLL", CharSet = CharSet.Ansi)]
static extern uint MAPILogon(IntPtr ulUIParam, string lpszProfileName, string lpszPassword, uint flFlags, uint ulReserved, ref IntPtr lplhSession);
[DllImport("MAPI32.DLL")]
static extern uint MAPILogoff(IntPtr sess, IntPtr hwnd, uint flg, uint rsv);
[DllImport("MAPI32.DLL", CharSet = CharSet.Ansi)]
static extern uint MAPISendMail(IntPtr lhSession, IntPtr hwnd, MapiMessage lpMessage, uint flFlags, uint ulReserved);
const int MAPI_LOGON_UI = 0x00000001;
const int MAPI_RECEIPT_REQUESTED = 0x00000002;
enum RecipientType { Originator = 0, To, Cc, Bcc };
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
class Recipient
{
public int Reserved = 0;
public RecipientType RecipClass = RecipientType.Originator;
public string Name;
public string Address;
public int IdSize = 0;
public IntPtr EntryID = IntPtr.Zero;
}
[StructLayout(LayoutKind.Sequential, CharSet = CharSet.Ansi)]
class MapiMessage
{
public int reserved;
public string subject;
public string noteText;
public string messageType;
public string dateReceived;
public string conversationID;
public int flags;
public IntPtr originator;
public int recipCount;
public IntPtr recips;
public int fileCount;
public IntPtr files;
}
void SendMail(List<Recipient> recipients, string subject, string body)
{
// Logon
// First call to MAPILogon with ProfileName = null, Password = null and [Logon]Flags = 0: MapiLogon uses existing session, if exists
var session = IntPtr.Zero;
var result = MAPILogon(IntPtr.Zero, null, null, 0, 0, ref session);
if (result != 0) result = MAPILogon(IntPtr.Zero, null, null, MAPI_LOGON_UI, 0, ref session);
if (result != 0) throw new Exception($"Error Logon: {result}"); // MAPILogon throws exception, refer to GetErrorText()
// Send mail
var mapiMessage = new MapiMessage { subject = subject, noteText = body };
mapiMessage.recips = GetRecipients(recipients, out mapiMessage.recipCount);
mapiMessage.flags = MAPI_RECEIPT_REQUESTED; // Set receipt flag
result = MAPISendMail(session, IntPtr.Zero, mapiMessage, 0, 0);
if (result > 1 || result < 0) throw new Exception($"Error SendMail: {result}");
// Cleanup(ref mapiMessage);
// Logoff
if (session != IntPtr.Zero)
{
result = MAPILogoff(session, IntPtr.Zero, 0, 0);
if (result != 0) throw new Exception($"Error Logoff: {result}");
}
}
IntPtr GetRecipients(List<Recipient> recipients, out int recipCount)
{
recipCount = 0;
if (recipients.Count == 0) return IntPtr.Zero;
var size = Marshal.SizeOf(typeof(Recipient));
var intPtr = Marshal.AllocHGlobal(recipients.Count * size);
var ptr = (int)intPtr;
foreach (var mapiDesc in recipients)
{
Marshal.StructureToPtr(mapiDesc, (IntPtr)ptr, false);
ptr += size;
}
recipCount = recipients.Count;
return intPtr;
}