unable to use custom control in form regions

[Guest]

Hi,

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 are:
- 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.

 

[Sue Mosher [MVP-Outlook]]

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?

--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003

and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers

 

[Guest]

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]]

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

and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers

 

[Guest]

Hi,

I just want to make sure you received the sample project I sent you on
Monday on the email address you mention below (webmaster at outlookcode dot
com).

Regards.

 

[Sue Mosher [MVP-Outlook]]

When I run your project, this statement:

m_AnnotationControl.Open(m_tempTif)

raises a System.accessviolationexception error:

Attempted to read or write protected memory. This is often an indication that other memory is corrupt.

The discussion at http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=202386&SiteID=1, among others, suggests that issue could be related to calling an external method on a COM object -- a topic that is way outside my expertise. I admit, though, that it's easier to imagine that being a problem with a numeric or object parameter than with the string paramter in your Open method.

Of course, it could also be a VS bug, but I didn't see anything on Microsoft Connect that seemed to fit.
--
Sue Mosher, Outlook MVP
Author of Configuring Microsoft Outlook 2003

and Microsoft Outlook Programming - Jumpstart for
Administrators, Power Users, and Developers