_mbccpy, _mbccpy_l

Copies a multibyte character from one string to another string. More secure versions of these functions are available; see _mbccpy_s, _mbccpy_s_l.


This API cannot be used in applications that execute in the Windows Runtime. For more information, see CRT functions not supported in Universal Windows Platform apps.


void _mbccpy(
   unsigned char *dest,
   const unsigned char *src
void _mbccpy_l(
   unsigned char *dest,
   const unsigned char *src,
   _locale_t locale


Copy destination.

Multibyte character to copy.

Locale to use.


The _mbccpy function copies one multibyte character from src to dest.

This function validates its parameters. If _mbccpy is passed a null pointer for dest or src, the invalid parameter handler is invoked, as described in Parameter Validation. If execution is allowed to continue, errno is set to EINVAL.

_mbccpy uses the current locale for any locale-dependent behavior. _mbccpy_l is identical to _mbccpy except that _mbccpy_l uses the locale passed in for any locale-dependent behavior. For more information, see Locale.

Security Note Use a null-terminated string. The null-terminated string must not exceed the size of the destination buffer. For more information, see Avoiding Buffer Overruns. Buffer overrun problems are a frequent method of system attack, resulting in an unwarranted elevation of privilege.

Generic-Text Routine Mappings

Tchar.h routine _UNICODE and _MBCS not defined _MBCS defined _UNICODE defined
_tccpy Maps to macro or inline function _mbccpy Maps to macro or inline function
_tccpy_l n/a _mbccpy_l n/a


Routine Required header
_mbccpy <mbctype.h>
_mbccpy_l <mbctype.h>

For more compatibility information, see Compatibility.

See also

Interpretation of Multibyte-Character Sequences
_mbclen, mblen, _mblen_l