Re: Pointer to member as template argument

Hi guys,

Heres my code:

#ifndef CTIMEOUT_H
#define CTIMEOUT_H

template<class T, void (T::*FPtr)() >
class CTimeoutCallback
     {
     public:

         ~CTimeoutCallback();
         CTimeoutCallback(T& o);

         void Callback();

     private:
         T *obj;
     };
#endif

//// CPP file below

#include "Timeout.h"

template<class T, void (T::*FPtr)() >
CTimeoutCallback<T, FPtr>::CTimeoutCallback(T& o) : obj(&o)
     {
     }

template<class T, void (T::*FPtr)() >
void CTimeoutCallback<T, FPtr>::Callback()
     {
     (obj->*FPtr)();
     }

/// I trying to use it like this

CTestClass test;

CTimeoutCallback<CTestClass, &CTestClass::Print> timeout(test);
timeout.Callback();

However I'm getting the following errors:

Undefined symbol: 'CTimeoutCallback<class CTestClass, &void
CTestClass::Print(void)>::~CTimeoutCallback<class CTestClass, &void
CTestClass::Print(void)>(void)
(??1?$CTimeoutCallback@VCTestClass@@$1?Print@1@QAEXXZ@@QAE@XZ)'

Can anybody see my mistakes?