Saving some typing.

One item on my C++ wishlist is a syntax for inlining typedefs into the base class list on a class declaration:

class CMyClass
    : public ATL::CComObjectRootEx<ATL::CComSingleThreadModel>
    , public ATL::CComCoClass<CMyClass, &__uuidof(MyClass)>
    , public ATL::IConnectionPointContainerImpl<CMyClass>
    , public ATL::IConnectionPointImpl<CMyClass,
                 &__uuidof(IMyClassEvents)>
    , public ATL::IConnectionPointImpl<CMyClass,
                 &__uuidof(IMyClassOtherEvents)>
    , public IMyClass

The two connection points result in a duplicated name, m_vec. To get the list of listeners to deliver any given event to, contortions like ATL::IConnectionPointImpl<CMyClass, &__uuidof(IMyClassOtherEvents)>::m_vec are necessary. These usually become typedefs:

private:
    typedef ATL::IConnectionPointImpl<CMyClass, &__uuidof(IMyClassEvents)> events_cp;
    typedef ATL::IConnectionPointImpl<CMyClass, &__uuidof(IMyClassOtherEvents)> otherevents_cp;

Then a relatively simple otherevents_cp::m_vec leads to the right container, but it requires regurgitating the entire base class type in the typedef.

Something like this would be really nice to have instead:

class CMyClass
    : public ATL::CComObjectRootEx<ATL::CComSingleThreadModel>
    , public ATL::CComCoClass<CMyClass, &__uuidof(MyClass)>
    , public ATL::IConnectionPointContainerImpl<CMyClass>
    , public ATL::IConnectionPointImpl<CMyClass,
                 &__uuidof(IMyClassEvents)> [private: events_cp]
    , public ATL::IConnectionPointImpl<CMyClass,
                 &__uuidof(IMyClassOtherEvents)> [private: otherevents_cp]
    , public IMyClass

Wouldn’t it?