VC++ 字符串Dword、LPSTR、LPWSTR、LPCSTR、LPCWSTR、LPTSTR、LPCTSTR

类   型	MBCS	UNICODE
TCHAR	char	char
WCHAR	wchar_t	wchar_t
LPSTR	char*	char*
LPCSTR	const char*	const char*
LPWSTR	wchar_t*	wchar_t*
LPCWSTR	const wchar_t*	const wchar_t*
LPTSTR	TCHAR*	TCHAR*
LPCTSTR	const TCHAR*	const TCHAR*

相互转换方法：
LPWSTR->LPTSTR: W2T();
LPTSTR->LPWSTR: T2W();
LPCWSTR->LPCSTR: W2CT();
LPCSTR->LPCWSTR: T2CW();

ANSI->UNICODE: A2W();
UNICODE->ANSI: W2A();