宽字节字符串与单字节字符串之间的转换

 

// Convert the char* to CString or TCHAR;
//CP_ACP can be replaced by CP_UTF8 or other codepage depend on the request;
//--------------------------------------------------------------------------
    char* pbuffer = "peng shui ming";

    DWORD dwCount = MultiByteToWideChar(CP_ACP, 0, pbuffer, -1, 0, 0 );
    TCHAR* pch = new TCHAR[dwCount];
    memset(pch, 0, dwCount * sizeof(TCHAR));
    MultiByteToWideChar(CP_ACP, 0, pbuffer, -1, pch, nCount);

    CString str = pch;

    //OR
    //filename is type of char*

    int cchfilename = MultiByteToWideChar( CP_UTF8, 0, filename, -1, 0, 0 );
    wchar_t* pfilename = new wchar_t[cchfilename];
    memset( pfilename, 0, cchfilename * sizeof(wchar_t) );
    MultiByteToWideChar( CP_UTF8, 0, filename, -1, pfilename, cchfilename );


//Convert the CString to char*
//----------------------------------------------------------------------------
    CString str = _T("peng shui ming");
    DWORD dwNum = WideCharToMultiByte(CP_UTF8,NULL,str,-1,NULL,0,NULL,NULL);
    char* pch = new char[dwNum];
    WideCharToMultiByte(CP_UTF8,NULL,str,-1,pch,dwNum,NULL,NULL);