wchar_t 与 char的转换

时间:2021-08-04 20:14:44

Converts a sequence of wide characters to a corresponding sequence of multibyte characters. More secure versions of these functions are available; see wcstombs_s, _wcstombs_s_l.

 
size_t wcstombs(
   char *mbstr,
   const wchar_t *wcstr,
   size_t count
);
size_t _wcstombs_l(
   char *mbstr,
   const wchar_t *wcstr,
   size_t count,
   _locale_t locale
);
template <size_t size>
size_t wcstombs(
   char (&mbstr)[size],
   const wchar_t *wcstr,
   size_t count
); // C++ only
template <size_t size>
size_t _wcstombs_l(
   char (&mbstr)[size],
   const wchar_t *wcstr,
   size_t count,
   _locale_t locale
); // C++ only
 

Parameters
mbstr
The address of a sequence of multibyte characters.

wcstr
The address of a sequence of wide characters.

count
The maximum number of bytes that can be stored in the multibyte output string.

locale
The locale to use.

 

Converts a sequence of multibyte characters to a corresponding sequence of wide characters. Versions of mbstowcs, _mbstowcs_l with security enhancements as described in Security Enhancements in the CRT.

errno_t mbstowcs_s( size_t *pReturnValue, wchar_t *wcstr, size_t sizeInWords, const char *mbstr, size_t count ); errno_t _mbstowcs_s_l( size_t *pReturnValue, wchar_t *wcstr, size_t sizeInWords, const char *mbstr, size_t count, _locale_t locale ); template <size_t size> errno_t mbstowcs_s( size_t *pReturnValue, wchar_t (&wcstr)[size], const char *mbstr, size_t count ); // C++ only template <size_t size> errno_t _mbstowcs_s_l( size_t *pReturnValue, wchar_t (&wcstr)[size], const char *mbstr, size_t count, _locale_t locale ); // C++ only

Parameters

[out] pReturnValue

The number of characters converted.

[out] wcstr

Address of buffer for the resulting converted wide character string.

[in] sizeInWords

The size of the wcstr buffer in words.

[in]mbstr

The address of a sequence of null terminated multibyte characters.

[in] count

The maximum number of wide characters to store in the wcstr buffer, not including the terminating null, or _TRUNCATE.

[in] locale

The locale to use.