c++ - Polymorphic member function pointer -

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I am trying to write a callback event system in DirectX9. I am trying to use method function signals to trigger events for mouseclick; But I'm having some problems My game uses a gamestate manager to manage the rendering All my gamestates are taken from the base class abstractGameState

I have a phantom object with this specific method: 

  m_NewGameSprite-> OnClick (this, and menmanustat :: start the game);

The main menu is the current game that is in my game, and StartGame is a void method part of this class. I want to store the function pointer in a variable within my phantom class so that users can click. 

  template & lt; Typename T & gt; Zero onclick (GameState * LinkedState, Zero (T :: * Event Pointer) ()) {m_LinkedGameState = LinkedState; M_EventPointer = Event indicator; // & lt; - does not compile}

I tried to downconver the indicator, but it does not really work.

These include two variables in my Prayer class 

  Zero (GameState :: * m_EventPointer) (); GameState * m_LinkedGameState;

Any help would be appreciated

I'm not really Know why your work is not going on, there is no doubt why it will be clear why a beautiful, normal, typewrif and standard function object that in almost all the circumstances is the replacement for function pointer Can be used. I will do this: 

  typedef boost :: function0

Note that event class now includes the status of the function call, with the object you want to call it. Generally you also use to create a closer, but you can easily tie a free function or any other function object. 

  Zero OnClick (events and events) {m_Event = event; }

Call it like this: 

  OnClick (boost :: bind (& MainMenuState :: StartGame, this));

With this scheme, you do not really need to store "linked game state" - this is explained in the event object.


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