How to pass a method as callback to another class?

Question

I have a question regarding callbacks using tr1::function. I\'ve defined the following:

  class SomeClass {
    public:
      typedef std::tr1::function

        

Answer 1

Use templates:

template 
class B
{
  public:
    typedef void (T::*TCallBackFunction)(void);   
    void SetCallBack(T* pCallBackClass, TCallBackFunction pCallBackFunction)
    {
      if(pCallBackFunction && pCallBackClass)
      {
        m_pCallBackFunction = pCallBackFunction;
        m_pCallBackClass = pCallBackClass;
      }
    }
    void StartCallBackFunction()
    {
      (pCallBackClass->(*m_pCallBackFunction))();
    }
  private:
    TCallBackFunction m_pCallBackFunction;
    T* m_pCallBackClass;
};

Such like this. And use it:

...
B b;
b.SetCallBack(&b, &MyClass::MyFunction);
...