模板Fn指针错误C2146：语法错误：缺少';' 在标识符之前

Question

I am facing a problem with templated member function pointer. The code is as shown below.

#include <String>
#include <iostream>
template<typename T>
struct method_ptr
{
    typedef void (T::*Function)(std::string&);
};

template <class T>
class EventHandler
{
private:
    method_ptr<T>::Function m_PtrToCapturer;
};

e:\\EventHandler.h(13) :

error C2146: syntax error : missing ';' before identifier 'm_PtrToCapturer'

I am facing this error.

Even If I use

method_ptr<EventHandler>::Function m_PtrToCapturer;

as member variable I am getting same error as above.

Answer 1

I don't know which compiler you use. I compiled it using GCC. It suggests that 'typename' is put before the definition of m_PtrToCapturer.