Adding a header item with MAPI

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

Hi,

I have developed an ATL/C++ add-in that I want to add a header item to a
_MailItem before I forward the email. The idea is that I take an item out of
the inbox, modify the header and then forward it to another email address. I
see there are Redemption examples; but I do not want to use the redemption
libraries. Is there an extended MAPI example that will show me how to
accomplish this? I do not want to use any third party utilities. I have
looked for examples on the web but I do not see any.

Thanks,
Tom -
 
1. Read MailItem.MAPIOBJECT property
2. QI it for IMessage Extended MAPI interface
3. Call IMessage::GetIDsFromNames() passing the appropriate GUID and id
4. "Or" the retirned tag with the appropriate type (PT_STRING8)
5. Use Imessage::SetProps or HrSetOneProp to set the property with tag from
#4.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
 
Thanks Dmitry - I will give that a try. I was using the following code
snippit but it seemed not to be working properly

IUnknownPtr pUnk = spForward->GetMAPIOBJECT();
CComQIPtr<IMAPIProp, &IID_IMAPIProp> pMAPIProp(pUnk);
ATLASSERT(pMAPIProp);
SPropTagArray ar = {0};
ULONG nProps = 0;
SPropValue *arProps = NULL;
TCHAR*szResult = NULL;

ar.cValues = 1;
ar.aulPropTag[0] = PR_TRANSPORT_MESSAGE_HEADERS;
pMAPIProp->GetProps(&ar, PT_UNSPECIFIED, &nProps, &arProps);
 
Setting PR_TRANSPORT_MESSAGE_HEADERS on an outgoing message won't do
anything...

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

Tom at GSD said:
Thanks Dmitry - I will give that a try. I was using the following code
snippit but it seemed not to be working properly

IUnknownPtr pUnk = spForward->GetMAPIOBJECT();
CComQIPtr<IMAPIProp, &IID_IMAPIProp> pMAPIProp(pUnk);
ATLASSERT(pMAPIProp);
SPropTagArray ar = {0};
ULONG nProps = 0;
SPropValue *arProps = NULL;
TCHAR*szResult = NULL;

ar.cValues = 1;
ar.aulPropTag[0] = PR_TRANSPORT_MESSAGE_HEADERS;
pMAPIProp->GetProps(&ar, PT_UNSPECIFIED, &nProps, &arProps);


Dmitry Streblechenko said:
1. Read MailItem.MAPIOBJECT property
2. QI it for IMessage Extended MAPI interface
3. Call IMessage::GetIDsFromNames() passing the appropriate GUID and id
4. "Or" the retirned tag with the appropriate type (PT_STRING8)
5. Use Imessage::SetProps or HrSetOneProp to set the property with tag
from
#4.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
Click to expand...
Click to expand...
 
"Inside MAPI" is the omly MAPI book ever published - it's been out of print
for ages, but you can get it in the PDF format from
http://www.insidemapi.com
It won't cover this particular question of course :-)
Otherwise just post your questions to the
microsoft.public.win32.programmer.messaging newsgroup or use the MAPI list
(http://peach.ease.lsoft.com/Archives/mapi-l.html).

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

Tom at GSD said:
Now it makes sense. :-)

I have been looking for a book or some reference material on MAPI
programming and I have yet to find one. I have a book written by Dave
Grundgeiger; but it is very high level, uses VB and really is a CDO
reference. Do you have any book recommendations?

Thanks!



Dmitry Streblechenko said:
Setting PR_TRANSPORT_MESSAGE_HEADERS on an outgoing message won't do
anything...

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

Tom at GSD said:
Thanks Dmitry - I will give that a try. I was using the following code
snippit but it seemed not to be working properly

IUnknownPtr pUnk = spForward->GetMAPIOBJECT();
CComQIPtr<IMAPIProp, &IID_IMAPIProp> pMAPIProp(pUnk);
ATLASSERT(pMAPIProp);
SPropTagArray ar = {0};
ULONG nProps = 0;
SPropValue *arProps = NULL;
TCHAR*szResult = NULL;

ar.cValues = 1;
ar.aulPropTag[0] = PR_TRANSPORT_MESSAGE_HEADERS;
pMAPIProp->GetProps(&ar, PT_UNSPECIFIED, &nProps, &arProps);


:

1. Read MailItem.MAPIOBJECT property
2. QI it for IMessage Extended MAPI interface
3. Call IMessage::GetIDsFromNames() passing the appropriate GUID and
id
4. "Or" the retirned tag with the appropriate type (PT_STRING8)
5. Use Imessage::SetProps or HrSetOneProp to set the property with tag
from
#4.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

Hi,

I have developed an ATL/C++ add-in that I want to add a header item
to
a
_MailItem before I forward the email. The idea is that I take an
item
out
of
the inbox, modify the header and then forward it to another email
address.
I
see there are Redemption examples; but I do not want to use the
redemption
libraries. Is there an extended MAPI example that will show me how
to
accomplish this? I do not want to use any third party utilities. I
have
looked for examples on the web but I do not see any.

Thanks,
Tom -
Click to expand...
Click to expand...
Click to expand...
 
Thanks Dmitry - I ordered a used book.



Dmitry Streblechenko said:
"Inside MAPI" is the omly MAPI book ever published - it's been out of print
for ages, but you can get it in the PDF format from
http://www.insidemapi.com
It won't cover this particular question of course :-)
Otherwise just post your questions to the
microsoft.public.win32.programmer.messaging newsgroup or use the MAPI list
(http://peach.ease.lsoft.com/Archives/mapi-l.html).

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

Tom at GSD said:
Now it makes sense. :-)

I have been looking for a book or some reference material on MAPI
programming and I have yet to find one. I have a book written by Dave
Grundgeiger; but it is very high level, uses VB and really is a CDO
reference. Do you have any book recommendations?

Thanks!



Dmitry Streblechenko said:
Setting PR_TRANSPORT_MESSAGE_HEADERS on an outgoing message won't do
anything...

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

Thanks Dmitry - I will give that a try. I was using the following code
snippit but it seemed not to be working properly

IUnknownPtr pUnk = spForward->GetMAPIOBJECT();
CComQIPtr<IMAPIProp, &IID_IMAPIProp> pMAPIProp(pUnk);
ATLASSERT(pMAPIProp);
SPropTagArray ar = {0};
ULONG nProps = 0;
SPropValue *arProps = NULL;
TCHAR*szResult = NULL;

ar.cValues = 1;
ar.aulPropTag[0] = PR_TRANSPORT_MESSAGE_HEADERS;
pMAPIProp->GetProps(&ar, PT_UNSPECIFIED, &nProps, &arProps);


:

1. Read MailItem.MAPIOBJECT property
2. QI it for IMessage Extended MAPI interface
3. Call IMessage::GetIDsFromNames() passing the appropriate GUID and
id
4. "Or" the retirned tag with the appropriate type (PT_STRING8)
5. Use Imessage::SetProps or HrSetOneProp to set the property with tag
from
#4.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

Hi,

I have developed an ATL/C++ add-in that I want to add a header item
to
a
_MailItem before I forward the email. The idea is that I take an
item
out
of
the inbox, modify the header and then forward it to another email
address.
I
see there are Redemption examples; but I do not want to use the
redemption
libraries. Is there an extended MAPI example that will show me how
to
accomplish this? I do not want to use any third party utilities. I
have
looked for examples on the web but I do not see any.

Thanks,
Tom -
Click to expand...
Click to expand...
Click to expand...
 
AFAIK that's just what the SMTP provider does.
Why is this important? According to all the RFCs MIME headers are not case
sensitive.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
 
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