Have/Do BuiltInCategory Enum Values Change From One Version To Another?

[ChrisHildebranAtWork]

Example:

Would the value of  'OST_ProjectInformation' be '-2103101' (real value) in one version of revit  and '-2402101' (random value) in another?

[jeremy_tammik · Accepted solution]

Dear Chris,

No, the BuiltInCategory Enum values remain constant.

Proof: Revit add-ins from previous versions run unchanged in newer releases of Revit, unless they make use of officially deprecated and obsoleted code. Such a change in the enum value would break things, and would have to be documented in the Revit API changes.

Cheers,

Jeremy