Difference between CString and CStringW

Ah hello.

My understanding of CString is that it is a class composed of a structure of TCHARs.  Now, TCHAR is defined as char or wchar_t depending on whether or not UNICODE is defined.

I still however see code using CStringW.  Hence my question: what is the difference between CString and CStringW; and when should I use which ?

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This is the ATL naming for the UNICODE version of CStringT, see http://msdn2.microsoft.com/en-us/library/5bzxfsea(VS.80).aspx ("CStringT Class")
CStringW, CStringA, and CString are wide, ASCII, and TCHAR versions of CString.

CStringW always holds Unicode characters, independent of the compilation mode of the program.

e.g .
If you want to pass UNICODE string to a function, but have TCHAR or CString source, With VC7 you can use CStringW.

You may refer this : http://www.flounder.com/cstring.htm#Unicode%20and%20CStrings  <== Refer chart given at this section


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Some of the techniques used with BSTR and MFC CString in the past no longer work with this new ATL-style CString.  See...
   ATL and MFC Changes: ATL 7.0 and MFC 7.0
mrwad99Author Commented:
Thanks all :)
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