Instantiating a native class from a /clr DLL

[xpnctoc]

I have a little C++/CLI problem. I have a DLL that contains the following definition:

// *************************
// IN THE HEADER FILE
// *************************
 
#pragma once
 
#ifdef EXPORTS
#define MYAPI __declspec(dllexport)
#else
#define MYAPI __declspec(dllimport)
#endif
 
class MYAPI NNative
{
public:
    NNative();
    int DoSomething();   // just returns the integer 1000.
};
 
// *************************
// IN THE CPP FILE
// *************************
 
#include "CliLib.h"
 
NNative::NNative()
{
}
 
int NNative::DoSomething()
{
    return 1000;
}
 

My calling app code is even more simple:

#include "stdafx.h"
#include "..\CliLib\CliLib.h"
 
using namespace System;
 
int main(array<System::String ^> ^args)
{
    NNative *pn = new NNative();
    Console::WriteLine(String::Format("You got {0}", pn->DoSomething()));
    delete pn;
    return 0;
}
 

If I build the DLL with no CLR support, everything builds and executes fine. However, if I build the DLL with CLR support...

1. The DLL still builds fine.
2. The main app produces 2 linker error for each public symbol of the NNative class: LNK2028 and LNK2019.

What am I doing wrong that I can't import the native class from the CLR DLL?

Thanks.