Help me please : write MFC-DLL

[lad]

- I built a MFC-DLL with VC++6.0

I add very simple function : Hello :

void Hello()
{

CFileDialog dlg(0);
dlg.Domodal();
}

and I export this function in .DEF file


- I use this DLL in VB6
An error occur :

...
File : afxwin1.inl
Line : 19
...

I look afxwin1.inl, line 19 :

Line 18 : _AFXWIN_INLINE HINSTANCE AFXAPI AfxGetInstanceHandle()
Line 19 : { ASSERT(afxCurrentInstanceHandle != NULL);
Line 20 : return afxCurrentInstanceHandle; }

Why that?
don't my dlg have Parent Handle?

What will i do to show that Dialog in VB?
(I must built MFC DLL, not use ATL)

Please show me
Thank !