【VC】warning C4996: 'XXXX': This function or variable may be unsafe.

关于VS系列使用 Unicode 格式产生以上警告：

warning C4996: 'wcscpy': This function or variable may be unsafe. Consider using wcscpy_s instead. To disable deprecation, use _CRT_SECURE_NO_WARNINGS. See online help for details.

MSDN

Generic-Text Routine Mappings

TCHAR.H Routine  _UNICODE Defined 
_tcscpy wcscpy 

解决方案

项目 ->属性 -> c/c++ -> 预处理器 -> 预处理器定义，加入 _CRT_SECURE_NO_WARNINGS，即可。

Deprecated function	Security-enhanced replacement
_alloca	_malloca
asctime	asctime_s
_cgets, _cgetws	_cgets_s, _cgetws_s
_chsize	_chsize_s
_controlfp	_controlfp_s
_creat	_sopen_s
_cscanf	_cscanf_s
_cscanf_l	_cscanf_s_l
ctime	ctime_s
_ctime32	_ctime32_s
_ctime64	_ctime64_s
_cwscanf	_cwscanf_s
_cwscanf_l	_cwscanf_s_l
_ecvt	_ecvt_s
_fcvt	_fcvt_s
fopen	fopen_s
freopen	freopen_s
fscanf	fscanf_s
_fscanf_l	_fscanf_s_l
fwscanf	fwscanf_s
_fwscanf_l	_fwscanf_s_l
_gcvt	_gcvt_s
getenv	getenv_s
gets, _getws	gets_s, _getws_s
gmtime	_gmtime_s
_gmtime32	_gmtime32_s
_gmtime64	_gmtime64_s
_i64toa	_i64toa_s
_i64tow	_i64tow_s
_itoa	_itoa_s
_itow	_itow_s
localtime	_localtime_s
_localtime32	_localtime32_s
_localtime64	_localtime64_s
_ltoa, _ltow	_ltoa_s, _ltow_s
_mbccpy	_mbccpy_s
_mbccpy_l	_mbccpy_s_l
_mbscat	_mbscat_s
_mbscpy	_mbscpy_s
_mbslwr, _mbslwr_l	_mbslwr_s, _mbslwr_s_l
_mbsnbcat, _mbsnbcat_l	_mbsnbcat_s, _mbsnbcat_s_l
_mbsnbcpy, _mbsnbcpy_l	_mbsnbcpy_s, _mbsnbcpy_s_l
_mbsnbset	_mbsnbset_s
_mbsnbset_l	_mbsnbset_s_l
_mbsncat	_mbsncat_s
_mbsncat_l	_mbsncat_s_l
_mbsncpy	_mbsncpy_s
_mbsncpy_l	_mbsncpy_s_l
_mbsnset	_mbsnset_s
_mbsnset_l	_mbsnset_s_l
mbsrtowcs	mbsrtowcs_s
_mbsset	_mbsset_s
_mbsset_l	_mbsset_s_l
_mbstok	_mbstok_s
_mbstok_l	_mbstok_s_l
mbstowcs, _mbstowcs_l	mbstowcs_s, _mbstowcs_s_l
_mbsupr, _mbsupr_l	_mbsupr_s, _mbsupr_s_l
memcpy	memcpy_s
memmove	memmove_s
_mktemp	_mktemp_s
_open	_sopen_s
scanf	scanf_s
_scanf_l	_scanf_s_l
_searchenv	_searchenv_s
setbuf	setvbuf
_snprintf	_snprintf_s
_snprintf_l	_snprintf_s_l
_snscanf	_snscanf_s
_snscanf_l	_snscanf_s_l
_snwprintf	_snwprintf_s
_snwprintf_l	_snwprintf_s_l
_snwscanf	_snwscanf_s
_snwscanf_l	_snwscanf_s_l
_sopen	_sopen_s
_splitpath	_splitpath_s
sprintf	sprintf_s
_sprintf_l	_sprintf_s_l
sscanf	sscanf_s
_sscanf_l	_sscanf_s_l
strcat	strcat_s
strcpy	strcpy_s
_strdate	_strdate_s
strerror, _strerror	strerror_s, _strerror_s
_strlwr, _strlwr_l	_strlwr_s, _strlwr_s_l
strncat, _strncat_l	strncat_s, _strncat_s_l
strncpy, _strncpy_l	strncpy_s, _strncpy_s_l
_strnset	_strnset_s
_strnset_l	_strnset_s_l
_strset	_strset_s
_strset_l	_strset_s_l
_strtime	_strtime_s
strtok	strtok_s
_strtok_l	_strtok_s_l
_strupr, _strupr_l	_strupr_s, _strupr_s_l
swprintf	swprintf_s
_swprintf_l	_swprintf_s_l
swscanf	swscanf_s
_swscanf_l	_swscanf_s_l
tmpfile	tmpfile_s
_ui64toa, _ui64tow	_ui64toa_s, _ui64tow_s
_ultoa, _ultow	_ultoa_s, _ultow_s
_umask	_umask_s
vsnprintf, _vsnprintf, _vsnprintf_l, _vsnwprintf, _vsnwprintf_l	vsnprintf_s, _vsnprintf_s, _vsnprintf_s_l, _vsnwprintf_s, _vsnwprintf_s_l
vsprintf, _vsprintf_l, vswprintf, _vswprintf_l, __vswprintf_l	vsprintf_s, _vsprintf_s_l, vswprintf_s, _vswprintf_s_l
_wasctime	_wasctime_s
_wcreat	_wsopen_s
wcrtomb	wcrtomb_s
wcscat	wcscat_s
wcscpy	wcscpy_s
_wcserror, __wcserror	_wcserror_s, __wcserror_s
_wcslwr, _wcslwr_l	_wcslwr_s, _wcslwr_s_l
wcsncat, wcsncat_l	wcsncat_s, _wcsncat_s_l
_wcsncpy, _wcsncpy_l	wcsncpy_s, _wcsncpy_s_l
_wcsnset, _wcsnset_l	_wcsnset_s, _wcsnset_s_l
wcsrtombs	wcsrtombs_s
_wcsset, _wcsset_l	_wcsset_s_wcsset_s_l
wcstok, _wcstok_l	wcstok_s, _wcstok_s_l
wcstombs, _wcstombs_l	wcstombs_s, _wcstombs_s_l
_wcsupr_l, _wcsupr	_wcsupr_s, _wcsupr_s_l
_wctime, _wctime32, _wctime64	_wctime_s, _wctime32_s, _wctime64_s
wctomb, _wctomb_l	wctomb_s, _wctomb_s_l
_wfopen	_wfopen_s
_wfreopen	_wfreopen_s
_wgetenv	_wgetenv_s
wmemcpy	wmemcpy_s
wmemmove	wmemmove_s
_wmktemp	_wmktemp_s
_wopen	_wsopen_s
_wscanf, _wscanf_l	_wscanf_s, _wscanf_s_l
_wsearchenv	_wsearchenv_s
_wsopen	_wsopen_s
_wsplitpath	_wsplitpath_s
_wstrdate	_wstrdate_s
_wstrtime	_wstrtime_s