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

You asked specifically about member functions, but there are other uses for function pointers as well. The most common reason why I need to use function pointers in C++ is when I want to load a DLL ar runtime using LoadLibrary(). This is in Windows, obviously. In applications that use plugins in the form of optional DLLs, dynamic linking can't be used at application startup since the DLL will often not be present, and using delayload is a pain.

After loading the library, you have to get a pointer to the functions you want to use.