Dinamically disable controls

Hi,

I've created an info status button + SMS notification task for when the connection of the KNX BUS fails.

But what I would like to do, would be to lock the KNX controls, while there's no BUS connection, because IMHO the controls shouldn't be available if there's no connection. I know that there's an error message if you press them, but I would like to take it further.

I've searched everything but couldn't find any way to do that, is it possible?

Also, this could useful to dynamically disabled a certain button or whatever we would like, let's say disabled an Arm button if something's already armed, etc etc...

Best regards