Re: Abstract classes, multiple inheritance, and implemention question

"Bogdan" wrote:


You can do this, however you will required to surpress one nasty
warning.

First, make inheritance virtual:

struct s2 : virtual public s1{
    virtual void f3() = 0;
};

I also have 2 implementation classes:

struct s1imp : virtual pubic s1 {
    virtual void f1() {}
    virtual void f2() {}
};

Second, handle the C4250 warning:

#pragma warning(push)
#pragma warning(disable: 4250)

struct s2imp : public s1imp, public s2 {
    virtual void f3() { PRINTME(); }
};

#pragma warning(pop)
#pragma

Third, use the code:

s2imp s2i;

s2i.f1(); // calls s1imp::f1
s2i.f2(); // calls s1imp::f2
s2i.f3(); // calls s2imp::f3

HTH
Alex