For Outlook 2010 you need to work with the ribbon for both Inspectors and
Explorers. In that case you would probably want to set up getEnabled
handlers in your ribbon control XML. You can then call Ribbon.Invalidate()
or .InvalidateControl(controlID) to force that callback (among others) to
fire. In that callback you can then decide whether or not the controls are
enabled or disabled.

It's the same principle as handling disabling/enabling on Inspector ribbon
controls in Outlook 2007.

--
Ken Slovak
[MVP - Outlook]
http://www.slovaktech.com
Author: Professional Programming Outlook 2007.
Reminder Manager, Extended Reminders, Attachment Options.
http://www.slovaktech.com/products.htm


"rakesh" wrote in message
...
Thanks again Ken for your long reply.

This is my mistake in the last line of the last post. I have not mentioned
that I am facing these problems only in Outlook 2010.
In previous versions of Outlook, till 2007 all functionalities are working
fine.
Due to ribbon buttons, I am not finding the solution to disable button on
Outlook events.

Thanks for the suggestions.

_
Best Regards