Benefits of Character Set Portability
You can benefit from using MFC and C run-time portability features even if you do not currently intend to internationalize your application:
Coding portably makes your code base flexible. You can later move it easily to Unicode or MBCS.
Using Unicode makes your applications for Windows more efficient. Because Windows uses Unicode, non-Unicode strings passed to and from the operating system must be translated, which incurs overhead.
See also
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