VC读取utf-8格式文本文件

 
 读取UTF-8格式文本文件 去掉文件头的三个字节,先将文本数据读到char数组之中,然后将多字节UTF8字符串转换成宽字符的UNICODE字符串,然后将UNICODE字符串转换成char型字符串或者直接复制到CString中(UTF-8char都属于MultiByte char,不能直接相互转换) BOOL ReadUTF8StringFile(CString Path, CString& str) { CFile fileR; if(!fileR.Open(Path,CFile::modeRead|CFile::typeBinary)) { MessageBox(NULL,_T("无法打开文件:")+Path,_T("错误"),MB_ICONERROR|MB_OK); return false; } BYTE head[3]; fileR.Read(head,3); if(!(head[0]==0xEF && head[1]==0xBB && head[2]==0xBF)) { fileR.SeekToBegin(); } ULONGLONG FileSize=fileR.GetLength(); char* pContent=(char*)calloc(FileSize+1,sizeof(char)); fileR.Read(pContent,FileSize); fileR.Close(); int n=MultiByteToWideChar(CP_UTF8,0,pContent,FileSize+1,NULL,0); wchar_t* pWideChar=(wchar_t*)calloc(n+1,sizeof(wchar_t)); MultiByteToWideChar(CP_UTF8,0,pContent,FileSize+1,pWideChar,n); str=CString(pWideChar); free(pContent); free(pWideChar); return true; }  

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