Alternative to c++ static virtual methods

Question

In C++ is not possible to declare a static virtual function, neither cast a non-static function to a C style function pointer.

Now, I have a plain ol\' C SDK that us

Answer 1

I still can see a use for static virtual methods, here an example:

class File
{
    static virtual std::string extension()  {return "";}
}

class ExecutableFile : public File
{
    // static because every executable has same extension
    static virtual std::string extension()  {return ".exe";}
}


std::string extension = "";

// needing static
extension = ExecutableFile::extension();

// not needing static nor virtual
ExecutableFile exeFile;
extension = exeFile.extension();

// needing virtual
File* pFile = &exeFile;
extension = pFile->extension();