How To Send a Message by Outlook Object Model with VC++

   // Change the path to msoutl85.olb if necessary.
   #import "C:\\Program Files\\MicrosoftOffice\\Office\\msoutl85.olb"\ 
   no_namespace exclude("_IRecipientControl", "_DRecipientControl")

   #include <stdio.h>
   #include <tchar.h>

   void dump_com_error(_com_error &e)
   {
    _tprintf(_T("Oops - hit an error!\n"));
    _tprintf(_T("\a\tCode = %08lx\n"), e.Error());
    _tprintf(_T("\a\tCode meaning = %s\n"), e.ErrorMessage());
    _bstr_t bstrSource(e.Source());
    _bstr_t bstrDescription(e.Description());
    _tprintf(_T("\a\tSource = %s\n"), (LPCTSTR) bstrSource);
    _tprintf(_T("\a\tDescription = %s\n"), (LPCTSTR) bstrDescription);
   }

   // If this is placed in the scope of the smart pointers, they must be
   // explicitly Release(d) before CoUninitialize() is called. If any
   // reference count is non-zero, a protection fault will occur.
   struct StartOle {
    StartOle() { CoInitialize(NULL); }
    ~StartOle() { CoUninitialize(); }
   } _inst_StartOle;

   void main()
   {
     try
    {
      NameSpacePtr pNameSpace;
      MAPIFolderPtr pOutbox;
      ItemsPtr pOutboxItems;
      _MailItemPtr pNewMail;
      AttachmentsPtr pAttachments;
      RecipientsPtr pRecipients;
      RecipientPtr pRecipient;
   
      // Create an Outlook.Application pointer.
      _ApplicationPtr pApp("Outlook.Application");
      // Create NameSpace pointer.
      pNameSpace = pApp->GetNamespace(L"MAPI");
      // If Outlook is not running, uncomment the next line.
      //pNameSpace->Logon("TO DO: Place profile name here");

      // Create pointer to the Outbox Folder.
      pOutbox = pNameSpace->GetDefaultFolder(olFolderOutbox);
      // Create pointer to the Messages Collection.
      pOutboxItems = pOutbox->Items;
      // Create pointer to a new message.
      pNewMail = pOutboxItems->Add();
      // Set the Subject of the message.
      pNewMail->Subject = "New Mail Subject";
      // Set the Text of the message.
      pNewMail->Body = "New mail body\n";
      // Create pointer to the Attachments collection.
      pAttachments = pNewMail->Attachments;
      // Create new Attachment.
      pAttachments->Add("c:\\Autoexec.bat", (long)1, (long)(15000), 
                       "Autoexec.bat");
   
      // Create pointer to Recipients Collection.
      pRecipients = pNewMail->Recipients;
      // Add recipient.
      pRecipients->Add("TO DO: Place email alias here");
      // Resolve the recipient address.
      pRecipients ->ResolveAll();

      // Send the message.
      pNewMail->Send();
      _tprintf(_T("Message sent\n"));
      // Logoff NameSpace.
      pNameSpace->Logoff();
    }

     catch (_com_error &e)
     {
       dump_com_error(e);
     }
   }