CODEWITHSUNDEEP
c++windowswinapiemailmapi
Lundin
Lundin

Reputation: 213832

How to send a mail using MAPI?

I want to send an e-mail using the mail client on the user's Windows computer. As far as I can tell from the net, MAPI is the way to go. However, after reading through the MSDN documentation, I find out that MAPI is quite vast, with no source code examples. And I have no need for 99% of the features, I just want to send an e-mail. How do I do this?

I have found examples here on SO and on the web, but they seem to rely on something called Simple MAPI, which Microsoft has apparently listed as obsolete: "The use of Simple MAPI is discouraged. It may be altered or unavailable in subsequent versions of Windows". So I don't want to use those functions.

I found a very good example here, but unfortunately it is for Windows CE and isn't fully compatible with the Win32 API. I managed to implement the code from that link until it got to where it attempts to open the drafts folder, the parameters to GetProps aren't compatible. Does anyone know where I can find a similar code example for PC? C++ prefered.

Upvotes: 3

Views: 18550

Answers (2)

Lundin
Lundin

Reputation: 213832

I have solved this by my own, with the help from various internet sources.

Official MSDN documentation

MAPIEx: Extended MAPI Wrapper

Once the code is properly tested & documented, I will try to post it here for future reference.

Upvotes: 2

sashoalm
sashoalm

Reputation: 79467

See Sending Email using MAPI - A COM DLL

[Edit]

I've used MAPI once and I'll post the code. I'm not sure if it's what you're looking for. This sends a message with optionally attached files ( but no body ).

Header:

#pragma once

class MailSender  
{
public:
    MailSender();
    ~MailSender();

    void AddFile(LPCTSTR path, LPCTSTR name = NULL);
    bool Send(HWND hWndParent, LPCTSTR szSubject = NULL);

private:
    struct attachment { tstring path, name; };
    vector<attachment> m_Files;
    HMODULE m_hLib;
};

Cpp:

#include "stdafx.h"
#include "MySendMail.h"
#include <mapi.h>

MailSender::MailSender()
{
    m_hLib = LoadLibrary(_T("MAPI32.DLL"));
}

MailSender::~MailSender()
{
    FreeLibrary(m_hLib);
}

void MailSender::AddFile( LPCTSTR file, LPCTSTR name )
{
    attachment a;
    a.path = file;
    if (!name)
        a.name = PathFindFileName(file);
    else
        a.name = name;
    m_Files.push_back(a);
}

bool MailSender::Send(HWND hWndParent, LPCTSTR szSubject)
{
    if (!m_hLib)
        return false;

    LPMAPISENDMAIL SendMail;
    SendMail = (LPMAPISENDMAIL) GetProcAddress(m_hLib, _T("MAPISendMail"));

    if (!SendMail)
        return false;

    vector<MapiFileDesc> filedesc;
    for (std::vector<attachment>::const_iterator ii = m_Files.begin(); ii!=m_Files.end(); ii++)
    {
        MapiFileDesc fileDesc;
        ZeroMemory(&fileDesc, sizeof(fileDesc));
        fileDesc.nPosition = (ULONG)-1;
        fileDesc.lpszPathName = (LPTSTR) ii->path.c_str();
        fileDesc.lpszFileName = (LPTSTR) ii->name.c_str();
        filedesc.push_back(fileDesc);
    }

    tstring subject;
    if (szSubject)
        subject = szSubject;
    else
    {
        for (std::vector<attachment>::const_iterator ii = m_Files.begin(); ii!=m_Files.end(); ii++)
        {
            subject += ii->name.c_str();
            if (ii+1 != m_Files.end())
                subject += ", ";
        }
    }

    MapiMessage message;
    ZeroMemory(&message, sizeof(message));
    message.lpszSubject = (LPTSTR) subject.c_str();
    message.nFileCount = filedesc.size();
    message.lpFiles = &filedesc[0];

    int nError = SendMail(0, (ULONG)hWndParent, &message, MAPI_LOGON_UI|MAPI_DIALOG, 0);

    if (nError != SUCCESS_SUCCESS && nError != MAPI_USER_ABORT && nError != MAPI_E_LOGIN_FAILURE)
        return false;

    return true;
}

Upvotes: 0

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