Office Clipboard- status check programmatically ?

Question

I have my own (patched)implementation of IDataObject::GetData say MyGetData. When I copy the data with Office Clipboard on, I get a call in MyGetData by

• Office Clipboard which tries to get the data to be pasted in its own clipboard viewer window
• the application which is pasting the copied data.

I want to differentiate between these two calls.

msdn says that Office Clipboard is another Clipboard Viewer and MS Office does not expose any API to control it.

Is there any way from which I can know whether Office Clipboard is active or not ?

Environment:- I am using PowerPoint 2007 on Windows Vista.

Any help will be really appreciated.

Thanks, Salil