I wrote a tip article and can't figure out how to upload the code. Is this described anywhere? Thanks.

For non class functions, the compiler knows exactly where the function resides. For class members it doesn't. class base { public: virtual void fn() {} }; class derrived { public: virtual void fn() {} }; base *p = new derrived; DWORD dw = (DWORD)p->fn; // which fn??