Hi all,

I am facing problem of accessing attributes of DCOM object.
I try to explain my problem with a simple example.

I have a server running on a machine which implements a DCOM sever
implementing interface say "IHello".
A client running on other machine creates this DCOM object.
Once DCOM object is created on server side it starts communicating with
other objects in the sever application. For this purpose I need to declare
some my own methods like "SetValue()" as describle below in the example.

**********************************************

// CHello.h

 class ATL_NO_VTABLE CHello :
public CComObjectRootEx<CComSingleThreadModel>,
public CComCoClass<CHello , &CLSID_CHello >,
public ISupportErrorInfo,
public IHello
{
public:
        CHello ();
        virtual ~CHello ();

                DECLARE_CLASSFACTORY_SINGLETON(CHello)

                DECLARE_REGISTRY_RESOURCEID(IDR_HELLO)
                DECLARE_NOT_AGGREGATABLE(CHello )

                DECLARE_PROTECT_FINAL_CONSTRUCT()

                BEGIN_COM_MAP(CHello )
                COM_INTERFACE_ENTRY(ICHello )
                COM_INTERFACE_ENTRY(ISupportErrorInfo)
                END_COM_MAP()

                // ISupportsErrorInfo
                STDMETHOD(InterfaceSupportsErrorInfo)(REFIID riid);

                // IHELLO

                STDMETHOD(Foo)();
                STDMETHOD(Bar)();
                ........

                // Own methods

                void Setvalue(int& x);

                protected:

                private:

                int value;
                .........
};

// CHello.cpp

void
CHello::Setvalue(int& x)
{
        value = x; // do this line a client gets hr != 0x00000 (HRESULT hr)
}
************************************************************

I get error when I call "SetValue(int& x)" method.
When I try to debug I cannot access the attributes of "CHello" class.
I the debugger, every attribute has an error:

"CXX0030: Error expression cannot be evaluated"

I the same way if I declare an extern variable in CHello.h file, to be able
to access from other file like:

extern CComPtr<ICallbackEvent> event_m;
I get the following error:
***************************************************
error LNK2001: unresolved external symbol "class ATL::CComPtr<struct
ICallbackEvent> event_m" (?event_m3V?$CComPtrICallbackEventATLA)
Debug/CCS.exe : fatal error LNK1120: 1 unresolved externals
Error executing link.exe.
********************************************************

Why it is so? Am I missing something?

My server application project is created with ATL wizard and then I add my
own idl file.

Any comment or idea?
Eargerly waiting for relpy.

regards
/Saleem

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