Dear MVP,
When I delete an email using CDO delete() method, I use
Attachment::WriteToFile, Attachment::ReadFromFile, and
Message::Update()
to
modify the "Deletedxxxxxxxx" attachment of the hidden message
successfully.
But when I synchronize my POP3 account with POP3 server, the copy of
message
is not deleted in POP3 server.
I guess there is a flag to tell Outlook whether read "Deletedxxxxxxxx"
attachment. If I delete a message in Inbox and then delete it
permanently
in
the "Deleted Item Box", Outlook stores the UID in the "Deletedxxxxxxxx"
attachment of hidden message, and sets the flag. When synchronizing
with
POP3
Server, Outlook reads the flag and knows that some messages have been
permanently deleted. So Outlook starts to read "Deletedxxxxxxxx"
attachment
and gets the UID.
But when my add-in adds UID to that attachment, it does not set the
flag,
so
Outlook does not know if anything has changed and does not read that
attachment.
I have searched the whole values using OutlookSpy but could not find
the
flag. Could you tell me what happened when synchronizing with POP3
Server,
which flag or value should I modify, and how to tell Outlook to read
the
"Deletedxxxxxxxx" attachment of hidden message in Inbox when
synchronizing
with POP3 Server? This is the last step to achieve the goal.
Thank you so much!
----------
Rui Feng
Beijing, China
:
CDO does nott allow to modify the attachment data directly, so you
wowuld
need to save the attachment as a file, modify it, delete the old
attachment,
add the new one.
Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
I have got the whole relations of UIDL message id, attachment file
name
of
the hidden message, and POP Account ID! And I have got the values in
my
program. Thanks for your great OutlookSpy!
Select a message --> IMessage --> GetProps --> Property Tag ==
0x8013
The first 8 number of 0x8013 value is POP Account ID. It's HEX and
must
be
changed to DEC.
In the same window, the value whose Property Tag is equle to "0x8016
(|ID=0x8f01)" is the UIDL message id.
Misc --> IOlkAccountManager
PROP_ACCT_ID is the POP Account ID got from IMessage.
Misc --> IOlkAccountManager --> select an account and click
"FindAccount"
The pVar of dwProp whose value is equal to "PT_LONG, 0x0003" is the
attachment file ID of the hidden file. For example, my value is
"2192694955".
When changed to HEX, it will be "82b1deab". So the attachment file
names
of
hidden message in Inbox are "Blob82b1deab", "Restags82b1deab" and
"Deleted82b1deab".
What I have to do now is to add the UIDL message id to the
attachment
file
whose name is "Deleted82b1deab". Could you tell me how to add
something
in
an
attachment using CDO?
Thank you and have a good day!
:
You cannot hardcode the property tag; it is a named property, you
must
call
IMessage::GetIDsFromNames first.
I don't know how those messages are mapped to the accounts, sorry.
Did
you
try to see if anything is available through the IOlkAccountManager
(you
can
access it through Misc | IOlkAccountManager in OutlookSpy)?
Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
I've written this and it works:
CComPtr < IUnknown > spUnknown;
CComPtr < IMessage > spIMessage;
spNewMail->get_MAPIOBJECT(&spUnknown);
spUnknown->QueryInterface(IID_IMessage, (void **)&spIMessage);
SPropTagArray Array;
LPSPropTagArray lpArray = &Array;
lpArray->cValues = 1;
lpArray->aulPropTag[0] = 0x80160102;
ULONG FAR lpcValues;
LPSPropValue lppPropArray;
HRESULT hr = spIMessage->GetProps(lpArray, NULL, &lpcValues,
&lppPropArray);
int nStrCount = lppPropArray->Value.bin.cb;
_bstr_t bstrPOPString((wchar_t *)lppPropArray->Value.bin.lpb);
char * cPOPString = bstrPOPString;
ATLTRACE("POPSTRING = %s\n", cPOPString);
I do not forget to free them like this:
MAPIFreeBuffer((void *)lpcValues);
MAPIFreeBuffer(lppPropArray);
The UIDL message id have been stored in bstrPOPString. The next
step
is
to
add it to the corresponding attachment of hidden message. I don't
know
how
to
find the exact attachment because I have 3 "Deletedxxxxxxxx"
files.
I cannot get its property tag like PR_XXXXXX style because it has
no
name
in
MAPITAGS.H file. Instead, I use 0x80160102 directly. Do you think
its
property tag is different in other computers installed Outlook
2003?
Thank you.
:
No, it does not delete the message id.
Yes, you can access the list of message ids. If you are using
CDO
1.21,
use
the Folder.HiddenMessages to find the corresponding message.
Look
at
the
hidden messages with OutlookSpy (click IMAPIFolder, go to the
"Associated
Contents" tab) or MFCMAPI.
I don't see however how that will help you - if you delete that
message
id,
POP3 provider will assume that it is a new message and download
it
again.
This is the opposite of what you are trying to achieve.
Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
So do you think CDO "Message.Delete" method does not delete
(maybe
forget
to
delete) message ids in that hidden message? If this is true,
can
my
add-in
access that hidden message in the Inbox and delete ids?
Thank you.
:
Outlook stores the list of the message ids in a hidden
message
(PR_MESSAGE_CLASS = "IPM.MessageManager") in the Inbox.
However there is no way to tell the POP3 provider in Outlook
to
delete
a
particular message from a POP3 server.
Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool
message
Hi all.
My Outlook 2003 retrieves emails from a POP3 server. I set
to
"Leave
a
copy
of messages on the server" and "Remove from server when
deleted
from
'Deleted Items'". I wrote a COM Add-in using VC++ 6.0
When recieved a new mail from certain sender, I can catch
the
ItemAdd event and use CDO Message->Delete() to permanently
delete
that
new email. But the email has not been deleted from the POP3
server.
I guess there is a looking-up table in Outlook. When I
delete
an
Email
in
"Deleted Items Folder", Outlook find ID of that email and
set
a
value.
It
uses that value to notify the POP3 server next time to
delete
corresponding
email
with the same ID on the server.
I think maybe CDO doesn't tell Outlook that "an email was
deleted
and
please
tell
POP3 Server to delete the copy when connected next time".
Is that true and how to solve it? If you can do it using
other
programming
language
like VB please tell me anyway.
Thank you.
