How to use Kotlin Multiplatform shared library interface from C++ - c++

Question

I have a multiplatform kotlin project generating a shared library for mingwx64. Once I have generated the DLL, I have incorporated it into a C++ project and now i need to call a function that takes the implementation of an interface as a parameter, but I have no idea how to get it.
I attach example code to explain it:
//Kotlin Multiplatform code
interface InitializationEvents {
fun onComplete()
fun onError(error: String)
}
class MyClass {
fun initialize(succeed: Boolean, listener: InitializationEvents) {
if(succeed)
listener.onComplete()
else
listener.onError("Error description")
}
}
It generates a header file like this:
//libnative.h
typedef {
...
/* User functions. */
struct {
struct {
struct {
libnative_KType* (*_type)(void);
void (*onComplete)(libnative_kref_InitializationEvents thiz);
void (*onError)(libnative_kref_InitializationEvents thiz, const char* error);
} InitializationEvents;
struct {
libnative_KType* (*_type)(void);
libnative_kref_MyClass (*MyClass)();
void (*initialize)(libnative_kref_MyClass thiz, libnative_KBoolean succeed, libnative_kref_InitializationEvents listener);
} MyClass;
} root;
} kotlin;
} libnative_ExportedSymbols;
extern libnative_ExportedSymbols* libnative_symbols(void);
And now I'm using this Cpp code:
// Demo.cpp
int main()
{
libnative_ExportedSymbols* lib = libnative_symbols();
libnative_kref_MyClass myClass = lib->kotlin.root.MyClass.MyClass();
//I guess I have to do something here... 😅
libnative_kref_InitializationEvents listener = { .pinned = NULL };
lib->kotlin.root.MyClass.initialize(myClass, true, listener);
}
void myOnComplete() { }
void myOnError(const char* error) { }
It would need to be able to receive the call to the myOnComplete and myOnError functions as desired by the library.
Thank you very much.