Accessing root folder using MAPI on Exchange 2007

David · Joined: 06 Aug 2007 Posts: 8

I am trying to open the root folder on Exchange 2007 using MAPI. If I
use the following...

HrMAPIOpenFolderEx(lpMailbox, '\\', szStoreFolderPath, &lpRootFolder)

I can open the @PR_IPM_INBOX_ENTRYID but when I try and open
@PR_IPM_SUBTREE_ENTRYID it fails. This works with Exchange 5.5 thru
2003. Did they change the name of the root folder? How do I access
the root folder for Exchange 2007 (on a client with MAPI support). If
I look at it in OutlookSpy it still says IPM_SUBTREE for the display
name property on the root folder.

Thanks, David

Archived from group: microsoft>public>exchange>development

Dan Mitchell · Joined: 05 Aug 2007 Posts: 42

David wrote in @4ax.com:
> I am trying to open the root folder on Exchange 2007 using MAPI. If I
> use the following...
>
> HrMAPIOpenFolderEx(lpMailbox, '\\', szStoreFolderPath, &lpRootFolder)

HrMAPIOpenFolderEx is part of the EDK, which is bad:

http://blogs.msdn.com/jasonjoh/archive/2004/08/01/204585.aspx

I'd guess there's a bug in there somewhere. You have a couple of choices:

1. get the EDK source and trace through it to work out what's going on
2. just write code yourself to read PR_IPM_SUBTREE_ENTRYID and openentry
on that

(or use the source code from MFCMAPI as a newer place to get sample code
from -- that navigates down to top-of-info-store by opening the entryid
above. If MFCMAPI doesn't work, then something strange is going on).

-- dan

David · Joined: 05 Aug 2007 Posts: 4

Dan,

Thanks for the suggestion. I started to play with the EDK source and
for the heck of it used the string "Top of Information Store" instead
of the @PR_IPM_SUBTREE_ENTRYID and it worked. Not sure if it will
cause me grief in other languages.

On Mon, 21 Jan 2008 13:06:37 -0800, Dan Mitchell
wrote:

>David wrote in
>@4ax.com:
>> I am trying to open the root folder on Exchange 2007 using MAPI. If I
>> use the following...
>>
>> HrMAPIOpenFolderEx(lpMailbox, '\\', szStoreFolderPath, &lpRootFolder)
>
> HrMAPIOpenFolderEx is part of the EDK, which is bad:
>
>http://blogs.msdn.com/jasonjoh/archive/2004/08/01/204585.aspx
>
> I'd guess there's a bug in there somewhere. You have a couple of choices:
>
> 1. get the EDK source and trace through it to work out what's going on
> 2. just write code yourself to read PR_IPM_SUBTREE_ENTRYID and openentry
>on that
>
> (or use the source code from MFCMAPI as a newer place to get sample code
>from -- that navigates down to top-of-info-store by opening the entryid
>above. If MFCMAPI doesn't work, then something strange is going on).
>
> -- dan

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