Why would one use function pointers to member method in C++?

Question

A lot of C++ books and tutorials explain how to do this, but I haven\'t seen one that gives a convincing reason to choose to do this.

I understand very well why functio

Answer 1

Here is a typical scenario we have here. We have a notification framework, where a class can register to multiple different notifications. When registering to a notification, we pass the member function pointer. This is actually very similar to C# events.

class MyClass
{
    MyClass()
    {
        NotificationMgr::Register( FunctionPtr( this, OnNotification ) );
    }
    ~MyClass()
    {
        NotificationMgr::UnRegister( FunctionPtr( this, OnNotification ) );
    }

    void OnNotification( ... )
    {
        // handle notification
    }
};