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Pure Virtual functions in CDT [message #734578]

Sat, 08 October 2011 14:17

Eclipse User

I'm getting another strange problem.

Say I have:

virtual class IHelper {
     virtual int Method() = 0;
};

virtual class IMainClass {
    virtual IHelper OtherMethod() = 0;
};

Why does this give me the error message:

The type 'IHelper' must implement the inherited pure virtual method 'IHelper::Method'

I tried adding this class, but the error didn't change:

virtual class Helper : IHelper {
    virtual int Method() {
        return 0;
    }
};

Interestingly, if I remove the "= 0" from the method declaration so that the method is not declared as pure virtual, the error message goes away.

I'm using GCC 4.5.2 in Ubuntu 11.04

Re: Pure Virtual functions in CDT [message #734617 is a reply to message #734578]

Sat, 08 October 2011 18:35

Eclipse User

I feel dumb. All I had to do was declare the return type of OtherMethod as a reference/pointer instead of an instance (duh, it's an interface).
e.g.

class IMainClass {
    virtual IHelper* OtherMethod() = 0;
};

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