Re: Linker cannot find CFrameWnd::_GetBaseMessageMap

Stuart Redmann wrote:

Here is some compilable example (under Visual C 6.0). It doesn't link, though:

#include <afxwin.h>

template<class t_BaseFrameClass>
class CHelperMixin: public t_BaseFrameClass
{
   typedef t_BaseFrameClass TBaseFrameClass;
protected:
   static const AFX_MSGMAP* PASCAL _GetBaseMessageMap();
   virtual const AFX_MSGMAP* GetMessageMap() const;
};

template<class t_BaseFrameClass>
inline const AFX_MSGMAP* PASCAL
CHelperMixin<t_BaseFrameClass>::_GetBaseMessageMap ()
{
   return &TBaseFrameClass::messageMap;
}

template<class t_BaseFrameClass>
inline const AFX_MSGMAP* CHelperMixin<t_BaseFrameClass>::GetMessageMap() const
{
   // Define an empty message map (just for demonstration).
   static const AFX_MSGMAP_ENTRY messageEntries[] =
   {
   END_MESSAGE_MAP()

   static const AFX_MSGMAP messageMap =
   {
     TBaseFrameClass::_GetBaseMessageMap,
     &messageEntries[0]
   };
   return &messageMap;
}

class CMyMainFrame : public CHelperMixin<CFrameWnd>
{
};

int main ()
{
   CMyMainFrame MyMainFrame;
   return 0;
}

Thanks,
Stuart