overloaded functions in multiple inheritance.

[DX]

in MSVC7 the following seems to work:

class A { public: virtual void func1(void); };
class B { public: virtual void func2(void); };

class AB : public A, public B
{
virtual void A::func1(void) {return 0;};
virtual void B::func1(void) {return 1;};
}

This is great, except my two versions of func1 are actually huge, and
I'd like to put them into two separate files. In order to do this,
I'm doing something like:

class AB : public A, public B
{
virtual void A::func1(void);
virtual void B::func1(void);
}

void AB::A::func1(void)
{ return 0; };

void AB::A::func1(void)
{ return 1; };

However, when I do this, I get a compiler error:
error C2509: 'func1': member function not declared in 'AB'

Anyone have any clue what I'm doing wrong? Syntax error somewhere?

 

[Victor Bazarov]

in MSVC7 the following seems to work:

class A { public: virtual void func1(void); };
class B { public: virtual void func2(void); };

Did you actually mean

class B { public: virtual void func1(void); };

???

class AB : public A, public B
{
virtual void A::func1(void) {return 0;};
virtual void B::func1(void) {return 1;};
}

Really? I just checked with 7.1, and as expected, the code is full
of errors.

This is great,

No, it isn't. Your code is not C++, how can it be "great"?

[..]
Anyone have any clue what I'm doing wrong? Syntax error somewhere?

Plenty. What are you trying to do?

V

 

[DaKoadMunky]

You didn't state what it is you are trying to do but I am going to employ my
psychic powers and suggest that you take a look at this link...

http://www.gotw.ca/gotw/039.htm

 

[DX]

I was basically trying to have class AB implement two versions of
func1, one for each base class.

I thought this was not possible in C++. I was quite confused because
someone else passed me the original code. Anyways, I found my
solution here:

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/vccelng/htm/deriv_14.asp

That was exactly what I was trying to do.
My guess is it's specific to MSVC, using the "interface" keyword.