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11.07.2008 at 01:57AM PST, ID: 23884637
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Need help in Query interface

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8.8
Tags:

Microsoft, visual studio .net, 2003

hello,
I need help in query interface like i am getting  com pointer through a function and i need to extract the data  and  put in the required type.

 CComPtr<IModelDoc2>      swDrawing            = NULL;                CComPtr<IDrawingDoc>      swDraw            = NULL;      object

hRetStatus      = swApp->get_IActiveDoc2 (&swDrawing);
now im getting value in swdrawing but i need the same doc info value to be stored in swdraw also but i cannot call the function again because drawingdoc doesnt support it so im doing query interface i want to know whether what i have done is right or wrong

hRetStatus = swDrawing->QueryInterface(__uuidof(IDrawingDoc), reinterpret_cast<void**> (&swDraw));
 
 
 
Accepted Solution by romanm:

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Assisted Solution by alexcohn:

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Author Comment by Sohela:

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20081119-EE-VQP-45 - Hierarchy / EE_QW_2_20070628