Make Modelica class read-only in Dymola

Question

Is there are way to make a user written class read-only in dymola? I want to avoid modifying it by error, when working on models that use it.

Answer 1

There are two ways I know of. The first is to make the files read only on the file system. I'm pretty sure Dymola will recognize that fact and prevent modification. I think.

There is also a way to add an annotation that is essentially a checksum or hash or something. But this is typically done by DS as a way of "signing" libraries. I don't think there is a way for ordinary users to perform this signing.

Have you check in the documentation? It might be documented there. I don't have access to a machine with Dymola on it right now to check.

Answer 2

Since Dymola 2017 FD01 classes can be locked.

• Right-Click a class in the package browser and select Lock...

• This will create the annotation

  __Dymola_LockedEditing="<reason-for-locking>"
  

  and the class and nested classes (e.g. classes in a package) are not editable anymore.