UnicodeToUTF8, UTF8ToUnicode

项目中用到了读写utf8格式xml文件，所以写了utf8与unicode转换的函数。

//CString 头文件 #include <afx.h>
//CString 与LPCTSTR通用

作用类似于ATL的字符串转换宏 CA2T, T2CA，只不过这俩是针对ANSI的。

介绍：http://blog.csdn.net/earbao/article/details/11696929

注意作用域问题：http://blog.csdn.NET/bloodfighter/article/details/5618846

关于utf8 与 utf16介绍：http://www.cnblogs.com/kingcat/archive/2012/10/16/2726334.html

bool UnicodeToUTF8(const CString &csUnicode, CStringA &csUTF8)
{
#ifdef UNICODE
    int nLen = WideCharToMultiByte(CP_UTF8, 0, csUnicode, -1, NULL, 0, NULL, NULL); //确定结果字符串长度
    char *cUtf8 = new char[nLen+1];
    if(nLen != WideCharToMultiByte(CP_UTF8, 0, csUnicode, -1, cUtf8, nLen, NULL, NULL))
        return false;
    csUTF8 = cUtf8;
    delete[] cUtf8;
#else
    csUTF8 = csUnicode;
#endif
    return true;
}

bool UTF8ToUnicode(const CStringA &csUTF8, CString &csUnicode)
{
#ifdef UNICODE
    int nLen = MultiByteToWideChar(CP_UTF8, 0, csUTF8, -1, NULL, 0);
    WCHAR *wcUnicode = new WCHAR[nLen+1];
    if(nLen != MultiByteToWideChar(CP_UTF8, 0, csUTF8, -1, wcUnicode, nLen))
        return false;
    csUnicode = wcUnicode;
    delete[] wcUnicode;
#else
    csUnicode = csUTF8;
#endif
    return true;
}

阅读更多