PR_MESSAGE_CLASS is reset when calling Save() on item

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Tobias Böhm

Hello,

I'm having several problems with my Outlook-Add-In and I would

appreciate any help on this one.

To show a custom icon for items of a certain folder I set the

PR_MESSAGE_CLASS to the message class I created and the PR_ICON_INDEX

to -1. Then because of the -1 a custom icon is shown and because of

the custom message class it's the one I defined in the custom form.

Very good.

The problem starts when the user updates the item, either with an

outlook inspector or with my custom windows form. After displaying the

data in my custom windows form I persist the values, I write them back

to the outlook item and call .Save(). That resets the MessageClass

which is very odd I think because the item is not moved or something -

I just saved it.

Is this behaviour known or even wanted and if so, why?

Thank you in advance for any help.

Tobi
 
This behaviour can simply be reproduced by creating a custom form,

creating a folder and tell outlook to use the custom form. Create

item, everything is fine. Restart outlook, open one of the items, save

and the PR_MESSAGE_CLASS is gone. Oddly, outlook still opens the item

with the correct (custom) form even though there is no information

anywhere anymore that this is not a standard item.

Is this just my outlook acting weird or am I doing something wrong?

Thank you in advance.

Tobi
 
Is that custom form with that MessageClass published in Outlook? It sounds

like the form isn't published and the items are one-offed.

At any rate, just set the custom MessageClass again when the item is saved

and make sure the custom form is published.

"Tobias Böhm" <boehm.tobi@googlemail.com> wrote in message

news:531de8ba-d7f9-4764-b38d-e691ee6f9f50@v36g2000yqv.googlegroups.com...
> This behaviour can simply be reproduced by creating a custom form,
> creating a folder and tell outlook to use the custom form. Create
> item, everything is fine. Restart outlook, open one of the items, save
> and the PR_MESSAGE_CLASS is gone. Oddly, outlook still opens the item
> with the correct (custom) form even though there is no information
> anywhere anymore that this is not a standard item.

> Is this just my outlook acting weird or am I doing something wrong?

> Thank you in advance.
> Tobi
>
 
On 30 Jul., 15:14, " - " <kenslo...@mvps.org
wrote:
> Is that custom form with that MessageClass published in Outlook? It sounds
> like the form isn't published and the items are one-offed.

> At any rate, just set the custom MessageClass again when the item is saved
> and make sure the custom form is published.

> >

> http://www.slovaktech.com

> "Tobias Böhm" <boehm.t...@googlemail.com> wrote in message

> news:531de8ba-d7f9-4764-b38d-e691ee6f9f50@v36g2000yqv.googlegroups.com...
>
> > This behaviour can simply be reproduced by creating a custom form,
> > creating a folder and tell outlook to use the custom form. Create
> > item, everything is fine. Restart outlook, open one of the items, save
> > and the PR_MESSAGE_CLASS is gone. Oddly, outlook still opens the item
> > with the correct (custom) form even though there is no information
> > anywhere anymore that this is not a standard item.
>
> > Is this just my outlook acting weird or am I doing something wrong?
>
> > Thank you in advance.
> > Tobi

Thank you. After I designed the form I published (Outlook 07: "Publish

Form As") and gave an appropriate name. Then I right click on a folder

and assign that custom form to that particular folder. Then the

strange behaviour. I create an item, everything is fine. Opening,

saving, PR_MESSAGE_CLASS and the icon are correct. When I restart

Outlook the moment I save the item the PR_MESSAGE_CLASS and the icon

are gone. Strange, that can't be the desired behaviour, right? Funny

thing, Outlook still opens the item, even though there's nothing left

of my custom class, with that custim form.

I'm hacking the PR_MESSAGE_CLASS back in but that can't be it. Do you

mean a different kind of publishing?

Tobi
 
There's only one publishing that you'd use, Publish As and then selecting a

library (Personal or Organizational) or publishing to a folder. As long as

you only publish to one location and make sure to increment the Version

property of the form (a string but can be used as if an int value) things

are usually OK.

It's possible there's some form of forms cache corruption, that should be

eliminated first. Go to the Manage Forms dialog and click the button to

clear the cache. At that time make sure the form is published to the desired

location and no other.

The folder default form property just make sure your custom form is used to

create all new items in that folder.

About the only other thing I can think of is to examine one of the problem

items in a MAPI viewer such as OutlookSpy or MFCMAPI and see if you can spot

any differences between it and an item that's OK.

You aren't by any chance synching those items with some sort of PDA or IPod

or IPhone or other device? If so that might be the cause of the problem if

that synching software can't deal with custom form items and changes them

back to the standard MessageClass.

"Tobias Böhm" <boehm.tobi@googlemail.com> wrote in message

news:d7ccb583-75cc-4340-a657-50c7de1cf72f@o6g2000yqj.googlegroups.com...

<snip
Thank you. After I designed the form I published (Outlook 07: "Publish

Form As") and gave an appropriate name. Then I right click on a folder

and assign that custom form to that particular folder. Then the

strange behaviour. I create an item, everything is fine. Opening,

saving, PR_MESSAGE_CLASS and the icon are correct. When I restart

Outlook the moment I save the item the PR_MESSAGE_CLASS and the icon

are gone. Strange, that can't be the desired behaviour, right? Funny

thing, Outlook still opens the item, even though there's nothing left

of my custom class, with that custim form.

I'm hacking the PR_MESSAGE_CLASS back in but that can't be it. Do you

mean a different kind of publishing?

Tobi
 
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