<p>How can I find out the decorated name that will be asigned to each method name ? I'm trying to find out what the decorated name is , so that I may export it , in a DLL .</p>

This question is pretty similar:
Exporting DLL C++ Class , question about .def file
. The quick summary is that you probably want to use
```
__declspec(dllexport)
```
to let the compiler do the work of exporting your methods for you.
Microsoft changes the way they do function name mangling (or "decorated names" as they call them) with every compiler version, so you would probably run into future maintenance troubles if you try to manually export the mangled names. If you google for "msvc decorated names" there are some links that might help, but no guarantees.