how to export "DllCanUnloadNow" (prototypied in objbase.h) without .DEF file

Hello,

This is not a windows api related question - even when my problems are based
on some windows standard (SDK) header files.

i want to export DllCanInloadNow (one of the COM-Server APIs) in my DLL.
The function is prototyped in objbase.h.
And this is the problem, the function is prototypied without any "export"
definition. So the question is : how to export this function without help of
external .DEF files.

Sample:

========= dll2.cpp =========
#include <windows.h>

#define X_Export __declspec(dllexport)

// BaseTyps.h
// #define STDAPI EXTERN_C HRESULT STDAPICALLTYPE
// ObjBase.h
// STDAPI DllCanUnloadNow(void);

// 1st try
//X_Export STDAPI DllCanUnloadNow() -> error (invalid order of extern "C"
and linkage, ok!)

// 2nd try
EXTERN_C X_Export HRESULT STDAPICALLTYPE DllCanUnloadNow(void)
// dll2.cpp(13) : error C2375: 'DllCanUnloadNow' : redefinition; different
linkage
// C:\Programme\Microsoft SDKs\Windows\v6.0A\include\objbase.h(854) :
see declaration of 'DllCanUnloadNow'
{
 return 0;
}
=================================

cl -W4 -nologo -D__WINDOWS__ /J /LD dll2.cpp

thx for any help.

mario.