Send mail with Mapi with reply-to multiple emails - c++

Question

I'm working with MAPI library in C++ to send emails. Now I need that the emails I send have a reply-to set to more than one email and I just can do it to one email.
I have been reading that to be able to do this I need to work with the objects FLATENTRYLIST (link) and FLATENTRY (link).
My doubt is how can I store more than one FLATENTRY object in the FLATENTRYLIST. My experience in C++ is not very high so if anyone can help me I will apreciate.
Thanks in advance
Paulo

Answer 1

The FLATENTRYLIST has cEntries member that determines the number of the entries in the list.
You just need to store the entries in abEntries array.

Answer 2

Here is the solution I developed - http://www.codeproject.com/KB/IP/CMapiEx.aspx?msg=3959770#xx3959770xx
Thanks Dmitry for your help.
When I was copying the EntryID to the FlatEntry I as copying the wrong bytes number. Here is the final code that works like a charm.
BOOL CMAPIMessage::SetReplyTo(LPADRLIST lpAddrList)
{
HRESULT hRes = S_OK;
SPropValue pspvReply[1];
LPFLATENTRYLIST lpEntryList = NULL;
BOOL bResult = false;
CString m_strReplyToNames;
int cb = 0;
int displayNameTagID = -1;
int emailTagID = -1;
int entryIDTagID = -1;
int cbAllBytes = 0;
//Get all the EntryID's bytes to initalize the FLATENTRYLIST
for(unsigned j=0; j<lpAddrList->cEntries; j++)
{
for (unsigned i = 0; i < lpAddrList->aEntries[j].cValues; i++)
{
if (lpAddrList->aEntries[j].rgPropVals[i].ulPropTag == PR_ENTRYID)
{
entryIDTagID = i;
}
}
if (entryIDTagID >= 0)
{
int feBytes = CbNewFLATENTRY(lpAddrList->aEntries[j].rgPropVals[entryIDTagID].Value.bin.cb);
cbAllBytes += feBytes;
cbAllBytes += ((feBytes + 4 & ~3) - feBytes);
}
}
//Allocate a new FLATENTRYLIST with all flatentries bytes
cb = CbNewFLATENTRYLIST(cbAllBytes);
hRes = MAPIAllocateBuffer(cb, (LPVOID *)&lpEntryList);
if (FAILED(hRes))
{
bResult = false;
goto Cleanup;
}
ZeroMemory((VOID *)lpEntryList, cb);
// Copy the bits of the FLATENTRY into the FLATENTRYLIST.
lpEntryList->cEntries = lpAddrList->cEntries;
int countBytesAdded = 0;
for(unsigned j=0; j<lpAddrList->cEntries; j++)
{
for (unsigned i = 0; i < lpAddrList->aEntries[j].cValues; i++)
{
if (lpAddrList->aEntries[j].rgPropVals[i].ulPropTag == PR_TRANSMITABLE_DISPLAY_NAME)
{
displayNameTagID = i;
}
else if (lpAddrList->aEntries[j].rgPropVals[i].ulPropTag == PR_EMAIL_ADDRESS)
{
emailTagID = i;
}
else if (lpAddrList->aEntries[j].rgPropVals[i].ulPropTag == PR_ENTRYID)
{
entryIDTagID = i;
}
}
if ((emailTagID>=0) && (entryIDTagID>=0))
{
CString m_strReplyToName;
CString m_strReplyToEmail;
m_strReplyToEmail=lpAddrList->aEntries[j].rgPropVals[emailTagID].Value.lpszA;
if(displayNameTagID>=0)
m_strReplyToName=lpAddrList->aEntries[j].rgPropVals[displayNameTagID].Value.lpszA;
else
m_strReplyToName = m_strReplyToEmail;
m_strReplyToNames += (CString)m_strReplyToName + ";";
// Allocate a new FLATENTRY structure for the PR_REPLY_RECIPIENT_ENTRIES property
LPFLATENTRY lpReplyEntry = NULL;
cb = CbNewFLATENTRY(lpAddrList->aEntries[j].rgPropVals[entryIDTagID].Value.bin.cb);
hRes = MAPIAllocateBuffer(cb, (LPVOID *)&lpReplyEntry);
if (FAILED(hRes))
{
bResult = false;
goto Cleanup;
}
ZeroMemory((VOID *)lpReplyEntry, cb);
// Copy the bits of the entry id into the FLATENTRY structure
CopyMemory(lpReplyEntry->abEntry,
lpAddrList->aEntries[j].rgPropVals[entryIDTagID].Value.bin.lpb,
lpAddrList->aEntries[j].rgPropVals[entryIDTagID].Value.bin.cb);
lpReplyEntry->cb = lpAddrList->aEntries[j].rgPropVals[entryIDTagID].Value.bin.cb;
int missingBytes = 0;
int feBytes = CbFLATENTRY(lpReplyEntry);
missingBytes = ((feBytes + 4 & ~3) - feBytes);
//Copy each FLATENTRY to the abEntries, next to the previous added bytes
CopyMemory(lpEntryList->abEntries + countBytesAdded, lpReplyEntry, feBytes);
countBytesAdded += feBytes + missingBytes;
//Clean Memory
if (lpReplyEntry) MAPIFreeBuffer(lpReplyEntry);
}
displayNameTagID = -1;
emailTagID = -1;
entryIDTagID = -1;
}
lpEntryList->cbEntries = countBytesAdded;
pspvReply[0].ulPropTag = PR_REPLY_RECIPIENT_ENTRIES;
// Allocate memory in the lpb to hold the FLATENTRYLIST
hRes = MAPIAllocateBuffer(CbFLATENTRYLIST(lpEntryList), (LPVOID *)&pspvReply[0].Value.bin.lpb);
if (FAILED(hRes))
{
bResult = false;
goto Cleanup;
}
// Copy the memory into the SPropValue
CopyMemory(pspvReply[0].Value.bin.lpb,lpEntryList,CbFLATENTRYLIST(lpEntryList));
pspvReply[0].Value.bin.cb = CbFLATENTRYLIST(lpEntryList);
//Set the PR_REPLY_RECIPIENT_NAMES property with all names
SetPropertyString(PR_REPLY_RECIPIENT_NAMES, m_strReplyToNames);
// Set the property that contains the FLATENTRYLIST with the reply-to adresses to the message properties
hRes = Message()->SetProps(1,pspvReply,NULL);
if (FAILED(hRes))
{
bResult = false;
goto Cleanup;
}
bResult = true;
Cleanup:
if (lpEntryList) MAPIFreeBuffer(lpEntryList);
return bResult;
}