Comments by Ganesamoorthy.S

Ganesamoorthy.S 28-Jan-11 7:01am View

AcceptÂ Answer RejectÂ Answer
.I have completed this on my own.

Adding interface to a COM, is as usual but if we suppose to use QUERYINTERFACE then it has to be implemented(implement interface option must be chosen). As you have instructed me in the threads it has to be inherited.

I did it and got the expected result.

Ganesamoorthy.S 28-Jan-11 7:00am View

AcceptÂ Answer RejectÂ Answer
.I have completed this on my own.

Adding interface to a COM, is as usual but if we suppose to use QUERYINTERFACE then it has to be implemented(implement interface option must be chosen).

I did it and got the expected result.

Ganesamoorthy.S 28-Jan-11 2:20am View

<pre>HRESULT hr;
IGreet *greetObject;
IGreet2 *greetObject2;
CString strTemp;
hr = CoInitialize(NULL);
if (FAILED(hr) )
return ;
hr = CoCreateInstance(CLSID_Greet,NULL,CLSCTX_INPROC_SERVER, IID_IGreet,(void **)&greetObject);
if (FAILED(hr) )
{
CoUninitialize();
return ;
}
cout << greetObject->Sayhello("Ganesh") << endl;

hr = greetObject->QueryInterface(IID_IGreet2,(void **)&greetObject2);
if (FAILED(hr) )
{
CoUninitialize();
return ;
} </pre>

Ganesamoorthy.S 27-Jan-11 6:40am View

Thanks a lot

Ganesamoorthy.S 27-Jan-11 6:31am View

I am a beginner in COM, can you please clarify me?

I am using VS2005. How can i inherit the interface? Is there any wizard to do this?

Ganesamoorthy.S 27-Jan-11 5:56am View

During build of the project the component is getting registered properly.

And i am able to get any one of the objects using createinstance. But i am unable to use Queryinterface.

IGreet2 is not inherited from IGreet.

Ganesamoorthy.S 27-Jan-11 5:55am View

During build of the project the component is getting registered properly.

And i am able to get any one of the objects using createinstance. But i am unable to use Queryinterface.

IGreet2 is not inherited from IGreet.

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