I doubt that it will work in the reading pane, because attachments there are read-only.

That doesn't explain, though, why it doesn't work in the read Inspector. If you want to send me the control and a sample project, I can try running it here and, if I can duplicate the problem, pass it along to the Outlook 2007 team and let you know what happens. Having the legacy custom form version too would provide a good basis for comparison. You can sent it to me at webmaster at outlookcode dot com.

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003
http://www.turtleflock.com/olconfig/index.htm
and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers
http://www.outlookcode.com/jumpstart.aspx

"Nikolas" wrote in message ...
Thanks for your quick reply.

I have only used it in the reading pane and in the read scope.

I have added the control manually only.

"Sue Mosher [MVP-Outlook]" wrote:

Does this problem occur with form regions in all three scopes -- reading pane, compose and read?

Are you adding the control to the region programmatically? If so, what happens if you add it to the form region manually?
"Nikolas" wrote in message ...

Our company has created a custom control that displays and annotates tiff
files amongst other image files. While designing a COM Add-in for Outlook
2007 and using form regions we added our control to view incoming and
outcoming faxes.

The steps we do a
- add the custom annotation control to a form region
- initialise it in the CustomFormRegion class (using VSTO 2005 SE) and C#
- call custom functions from our control such as EnableMenuItems() etc.
(all menus of our control looks as expected)

(so far everything is fine)
- pass in our annotation control the MailItem Attachment as a parameter
to display it.

The attachment does not get displayed and we get the error msg: "Attempted
to read or write protected memory. This is often an indication that other
memory is corrupt."

This we tried:
- Added our custom annotation control to a legacy custom form and worked
fine when tried to view an image file using a VB Script
- used the same text box control as the legacy Message form and
displayed the tiff file as expected (like it does in the legacy Message form)
- tried to open any tiff file and not the MailItem Attachment with our
annotation control from the form region and failed again. The new file had
read/write access.

Any more info just ask.

Thanks in advance.