Interpretation of Multibyte-Character Sequences

Most multibyte-character routines in the Microsoft run-time library recognize multibyte-character sequences according to the current multibyte code page setting. The following multibyte-character routines depend instead on the locale code page (specifically, on the LC_CTYPE category setting of the current locale):

Locale-Dependent Multibyte Routines

Routine	Use
mblen	Validate and return number of bytes in multibyte character
_mbstrlen	For multibyte-character strings: validate each character in string; return string length
mbstowcs	Convert sequence of multibyte characters to corresponding sequence of wide characters
mbtowc	Convert multibyte character to corresponding wide character
wcstombs	Convert sequence of wide characters to corresponding sequence of multibyte characters
wctomb	Convert wide character to corresponding multibyte character