Reference: Why can‘t convert TCHAR* to char*
Need to Use Multi-Byte Character Set in project‘s setting.
If your project defines UNICODE/_UNICODE, which is the same as specifying it to be a Unicode build in the project settings, TCHARs will be wchar_t rather than char.
cannot convert from '_TCHAR *' to 'char *'
原文：http://www.cnblogs.com/cindy-hu-23/p/4194068.html