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MFC Support in ATL Projects.

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Last Modified: 2013-11-25
I have a ATL COM Object in the form of a DLL. It has a ton of interface functions and heavily uses string processing and does not process any kind of window messages and has no GUI objects.

In order to simplify string processing, I used CStrings. For which I had to enable MFC support in my ATL-COM DLL using the help of MSDN KB Article Q173974 (Add MFC Support to an ATL Project).

This article suggests the following:

Add the following line of code to the beginning of every member function of a COM interface, window procedure, and exported function:

AFX_MANAGE_STATE(AfxGetAppModuleState());


As far as I understand, AFX_MANAGE_STATE is used so that MFC can load proper resources form the DLL in which the function recides, rather than from the EXE module.

Since I am using only the CString from MFC (and not using the CString::LoadString() anywhere in my code), do I need to include AFX_MANAGE_STATE(AfxGetAppModuleState());  in all my interface function.

In short, my question is if I am only using CString from MFC and not using any resource, do I still need AFX_MANAGE_STATE(AfxGetAppModuleState());  line in all my interface function. If the answer is "YES" why so.


TIA,
Itti.

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Commented:
Laxman,

Thanks a lot. I also beleive what you said in your answer to my question.

I understand that including MFC for CString defeates the purpose of efficient ATL code, but since I was working on enhancement of some code that was written by somebody else, I thought that I would re-confirm my understanding.
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