Quoting res <[EMAIL PROTECTED]>:
> On 02.03.2008 19:11, Amir Taaki wrote:
>> Seems to work good from my tests, but tell me if there's some
>> glaring errors.
>
> You need to employ scfFakeInterface<iFoo> in the implementation to be
> able to query an iFoo from an object. (The scfImplementation<> stuff
> does not know iBar inherits from iFoo and thus does not automatically
> expose that interface via QI).
To elaborate a bit, the "correct" way to do it is (most of the time)
struct iBaseInterface : public virtual iBase
{
SCF_INTERFACE(iBaseInterface,1,0,0);
...
};
struct iDerivedInterface : public iBaseInterface
{
SCF_INTERFACE(iDerivedInterface,1,0,0);
...
};
class Impl : public scfImplementation2<Impl, iDerivedInterface,
scfFakeInterface<iBaseInterface> >
{
...
};
-M
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