Call c# function from within a c++ dll

Question

Situation:

• I have a 3-layer project: One for data, one for C# and one for C++.

• The c++ layer is made using support for clr (Common Language Runtime Support (/clr)). But I use it as wrapper between my pure C++ classes and C#. Within this layer I use VTK and ITK.

• The C# layer makes the call to the others so it only sees the others. I need to update something that is in a form in the C# layer by going through the C++ layer. Pure C++ will call the method in the C form#.

I have already researched the subject and only found examples of how to do using socket between C# and C++. This option is not very valid for the curve I will have in the project.

For the referenced C++ I can send the form smoothly.

How can I pass the trigger from C# function to pure C++ function?

{
    FormCollection^ forms = Application::OpenForms;

    XNamespace::FormTeste^ frmTeste;

    for (int i = 0; i < forms->Count; i++)
    {
        if (forms[i]->Name == "FormTeste")
        {
            frmTeste = static_cast<XNamespace::FormTeste^>(forms[i]);
            frmTeste->GetUCCriarPanoramica()->DefinirEstadoCursorAxial(estado);
            break;
        }
    }
}

in CLR I can find the form by name, but pure C++ does not have access to this information.