I have a function
typedef (bool)(*Callback)(void);
SystemMgr->SetFrameFunc(Callback func);
now I have this class
If I try to use the GameMgr::CallbackFunc in the SetFrameFunc() function, I get errors saying use &GameMgr::CallbackFunc to get pointer to member, but it does not work. Any help would be greatly appreciated.Code:class GameMgr { public: bool CallbackFunc() { return false; } };
http://www.parashift.com/c++-faq-lit....html#faq-33.4 or thereabouts?
7. It is easier to write an incorrect program than understand a correct one.
40. There are two ways to write error-free programs; only the third one works.*
A member function pointer is not a function pointer.
If you have control over the definition of SetFrameFunc(), perhaps you could consider having it take a function object instead, upon which you can use std::mem_fun_ref() to convert the CallbackFunc() member function to a function object.
Look up a C++ Reference and learn How To Ask Questions The Smart WayOriginally Posted by Bjarne Stroustrup (2000-10-14)
My Hat of Guessing thinks you're trying to actually use GameMgr::CallbackFunc as a parameter to SetFrameFunc, rather than GameMgrObj.CallbackFunc (i.e., passing the function from a particular object, not the class in general). Also, I'm not 100% convinced the signature will be right (don't member functions have a GameMgr &this implicitly put into their declaration lists? I should check, rather than asking questions).
You can write a template class that will take care of this. The template class should take 2 classes. One object is called and one does the calling. The template binds the two together so that they both use 'this' call.
If you want an example just MSN me.
