Programmatically enable/disable Office Clipboard?

[Irene]

Hi,

I have multiple command bar buttons that are enabled/disabled
frequently and I use the Clipboard functions and the Outlook Object
Model 'PasteFace' function to display my custom icons in the command
bar. (I used the VB code from the article, "HOWTO: Create a
Transparent Picture For Office CommandBar Buttons", to convert to
similar C++ functionality)

I recently noticed that the 'Office Clipboard' is filled with copies
of my custom icons.

Does anyone have any suggestions as to how to eliminate this from
happening? Can I somehow programmatically disable the office
clipboard while I am performing the icon copy and then reenable it (if
necessary). Or would there be a better way?

Thanks very much,
Irene