No, Outlook has no such locking built in. You're on your own.
--
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
<(E-Mail Removed)> wrote in message news:(E-Mail Removed)...
>I have a shared outlook calendar that contains a modified appointment
> item form. The form contains an excel control and a few other controls
> along with some vbscript to handle certain functions on the form. The
> problem I am having is that this calendar is being used by multiple
> users who are updating the excel spreadsheet along with checkboxes and
> other controls on the form. The spreadsheet is being saved to a
> database along with other info from the form. This works ok when only
> one user makes updates to the form, which is the norm. But occasionally
> multiple users will be working on the same form, which results in
> concurrency problems. What I want to be able to do is prevent items
> from being opened by multiple users. Does anyone know if Outlook has
> some built in functionality to handle this before I spend time
> implementing some sort of locking system?
>
> Thanks,
> Sharmil
>