Re: Base64Encode/Decode and Unicode

"Carl Daniel [VC++ MVP]" <>
Sun, 14 May 2006 07:39:47 -0700
Frank Natoli wrote:

Most WIN32 functions with string arguments have at least three
declarations, without suffix, with "A" suffix (for ASCII) and with "W"
suffix (for wide/Unicode).

Really just two - the one with no suffix is a preprocessor macro that
expands to one of the other two based on whether UNICODE (or is it
_UNICODE?) is defined.

Base64Encode/Decode appear to not have such
variants. Am I correct in then assuming that the output string
argument to Base64Encode and input string argument to Base64Decode is
eight bit ASCII, period? And thus if my program is compiled for
Unicode, I must use wcstombs or mbstowcs to adapt internal program
strings to these functions? Thanks.

I'm assuming you're talking about the functions in ATL server- there's no
Win32 API function named Base64Encode/Decode. In the case of the ATL server
functions, then yes, the base64 string is always a narrow string and if
you're using wide strings then you'll need to widen/narrow as appropriate
when calling the base64 functions.


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