如何使用函數列表指向矢量對象中的成員函數？

Question

struct object 
{ 
    void function() 
    { 
     std::cout << "function" << std::endl; 
    } 
}; 

int main() 
{ 
    // create vectors for objects and functions) 
    std::vector<object*> objectvec; 
    std::vector<void*> functionlist; 
    objectvec.push_back(new object); 

    // create a pointer to an object's function 

    void (object::* ptfptr_function) (void) = &object::function; 
    functionlist.push_back(&ptfptr_tryfunc); 

    // how do I call "functionvec[0]->tryfunc()" using the functionlist? 
    // (following line does nothing:) 

    functionlist[0]; 
} 

Answer 1

你想這樣的：

std::vector<void(object::*)()> functionlist; // container 

functionlist.push_back(&object::function);  // add pointer-to-member-fn 

(objectvec[0]->*functionlist[0])();    // invoke ptmf on an instance