Yes, that can be added to the ribbon. You would need to use the ribbon
interfaces of course, and supply callbacks that would handle adding the
button by supplying ribbon XML and for the label, image, click handler, etc.

You might want to google for Andrew Whitechapel's blog, he used to be with
the VSTO team and his blog has some great information on handling the ribbon
interfaces without needing an Office 2007 or 2010 PIA by using COMImports.
His examples are for managed code but they could be adapted to unmanaged
C++.

--
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


"Steve Haack" wrote in message
...
Ken,
I did some digging and here is what I found out. The program that they
developed is not a formal "outlook add-in". It is actually a standalone
C++
app that they built which calls the Outlook Object model and gets some
calendar data.

It was exposed to the users in OL2000 and OL2003 by putting an Icon on the
toolbar that called the external .exe.

Is there a way that I can add this to the ribbon in OL2010 (x86 version)?

Thanks,
Steve