Well, I've never seen that happen in any of the addin I've worked on. As I
said, I don't do C++ but I've never seen it in any VB6, C# or VB.NET addins.
I'd still think it has to be something in how you're handling the code.

About the only thing I can think of is to test the scenario on a sample
addin written using C++, I think you can find one or two at
www.outlookcode.com.

--
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


"MON205" wrote in message
...
Hello Ken,
Yes, the Explorer has the focus and the button is valid.
The same problem also happen when I set an icon for the button
(PutPicture).