Is it possible ...?

[Karl-Heinz Zengerle]

Hi world.
 
Is it possible to
 
-          get and set sheltering mechanisms of Excel (e.g. for the
sheet; not allowing users to change something)? If yes what classes
would have to be used?
-          Do so something with macros e.g. getting them. If yes what
classes would have to be used?
 
Regards,
Karl-Heinz Zengerle.