importing c++ header with "importExternalCTypes" results in "dot indexing is not supported"

I have a simple c++ header that looks something like the following, and it errors out when running "importExternalCTypes" with "dot indexing is not supported ..."

is there a trick to importing c++ enum classes with namespaces?

namespace Outside {
  namespace Inside {
    enum class MyEnum {
      One, Two, Three
    };
  }
}

Answer 1

[Harsh]

Hi @Patrick,

While importing C++ enum classes using importExternalCTypes, I encountered a similar error.

One workaround I tried was converting the '.hpp' files to C-style '.h' files. After this, I used the Simulink.importExternalCTypes command.

Alternatively, you can try upgrading to MATLAB R2025a, as this issue is completely resolved, even when using '.hpp' files.

I hope this helps!