How do I resolve the LPCWSTR type's formal parameter types that are not compatible with the real participation of char types in VS?

After setting the character set in the project properties character set for multibyte character sets or Unicode raises two bugs, find the following information:

Workaround One:
The string that is usually entered manually is a const char* (that is, LPCSTR) type, so you simply change the messagebox in that sentence to MessageBoxA.
Workaround Two:
Parameters use the "_t" macro:
MessageBox (null,_t ("Open image failed!"), _t ("error"), MB_OK);
Or:
MessageBox (NULL, L "Openimage failed!", l "error", MB_OK);
/*
*************************************************************************************************************** *********************************
* When the project is a Unicode encoding, _t saves the string in parentheses in Unicode, and when the project is multibyte-encoded, _t the string in parentheses in ANSI mode
* The keyword "L", regardless of the encoding environment, is to save the string that follows it in Unicode mode.
*************************************************************************************************************** **********************************
*/
1. Replace Char with Thcar
2, String plus _t (""), such as _t ("Hello")
3, replace strcpy with _tcscpy, etc.
The ANSI operation functions start with STR, such as strcpy (), strcat (), strlen ();
The Unicode manipulation functions start with WCS, such as wcscpy,wcscpy (), wcslen ();
Ansi/unicode mutually compatible operation functions begin with _tcs _tcscpy (C run-time library);
Ansi/unicode mutually compatible operation functions begin with Lstr lstrcpy (Windows functions);
Considering ANSI and Unicode compatibility, you need to use a generic string manipulation function that begins with _tcs or LSTR.

Finally add header file #include <tchar.h>


Reference Link: Http://zhidao.baidu.com/question/327887942.html?qbl=relate_question_2&word=LPWSTR

How does the formal parameter type of the char type in VS LPCWSTR type not be compatible?