Re: Additional Interfaces deriving from previous interfaces - Wizard?

Tech-Archive recommends: Fix windows errors by optimizing your registry

This afternoon was a success - my tip for others, don't worry about
what ClassView displays! In my case CV doesn't show the inherited
methods but they are there - really...

I followed your instruction Alexander and nocked up a VB app to see
what was actually being shown to the outside world. Once I realised
that the default Interface isn't revealed in the Object Browser I could
understand that actually the inheritance was operating fine.

Code now looks like this:

idl-----------

object,
uuid(234234234-5BA6-420F-BC21-­1D6E5366A75F),


helpstring("MyInterface"),
pointer_default(unique)
]
interface MyInterface: IUnknown
{
[helpstring("method LeasMethod")] HRESULT LeasMethod();
};


[
object,
uuid(234234234234-47a0-AAD5-74­B6787419FF),

helpstring("MyInterface2"),
pointer_default(unique)
]
interface IMyInterface2 : IMyInterface
{
[helpstring("method LeasMethodForMyInterface2")] HRESULT
LeasMethodForMyInterface2();
};


library MyInterfaceLib
{
importlib("stdole32.tlb");
importlib("stdole2.tlb");

[
uuid(B8A305A6-47C3-4DC1-A3DC-86323EDC5D53),
helpstring("MyInterface Class")
]
coclass MyInterface Class
{
[default] interface IMyInterface2;
interface IMyInterface;
};
};

---CMyInterface.cpp---------

class ATL_NO_VTABLE CMyInterface :
public CComObjectRootEx<CComMultiThre­adModel>,
public CComCoClass<CMyInterface, &CLSID_MyInterfaceLL>,
public ISupportErrorInfo,
public IMyInterface2
{
public:
CMyInterface()
{
}


BEGIN_COM_MAP(CMyInterface)
COM_INTERFACE_ENTRY(IMyInterfa­ce)
COM_INTERFACE_ENTRY(IMyInterfa­ce2)
COM_INTERFACE_ENTRY(ISupportEr­rorInfo)
END_COM_MAP()


// IMyInterface
public:
HRESULT GeneralFunction();
STDMETHOD(LeasMethod)();
STDMETHOD(LeasMethodForMyInterface2)();

};


#endif //


Now it works a treat. Again,thanks for the pointers..

One last question (you new it was coming), now I've removed the
reliance on IDispatch (no idea why I used that, ah yes it was the
Wizard default) can I assume the caching proxy issue is now resolved?


Thanks again
Lea

.

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