In new MS Office sysem 2007 is possible to target existing ribbon controls by using idMso="ControlId".
The question here is: How can I find existing control id?
Microsoft assisted to us and put them here. This is archive with Excel files with all controls ID and location description separated per application.
For non-office developers this could be also very interesting... because... well at least you can find how many ribbon controls are in certain application :)
- # Excel Ribbon controls - 1732 rows
- # Powerpoint Ribbon controls - 1573 rows
- # Word Ribbon controls - 2602 rows
This shows how big became MS Office for all these years and explains why it is difficult to know. You guys didn;t think MS Office is easy, did you? :)
For more details download 2007 Office System Document: Lists of Control IDs