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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 MappingsTCHAR.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 |
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