转自：
http://www.codeproject.com/Articles/76252/What-are-TCHAR-WCHAR-LPSTR-LPWSTR-LPCTSTR-etc
解释的超详细！！！
What are TCHAR, WCHAR, LPSTR, LPWSTR, LPCTSTR (etc.)?
原文：http://www.cnblogs.com/cindy-hu-23/p/3549899.html
