GBK与UTF-8 之间的相互转换

1、将GBK转换成UTF8

string GBKToUTF8(const std::string& strGBK)

{

 string strOutUTF8 = "";

 WCHAR * str1;

 int n = MultiByteToWideChar(CP_ACP, 0, strGBK.c_str(), -1, NULL, 0);

 str1 = new WCHAR
;

 MultiByteToWideChar(CP_ACP, 0, strGBK.c_str(), -1, str1, n);

 n = WideCharToMultiByte(CP_UTF8, 0, str1, -1, NULL, 0, NULL, NULL);

 char * str2 = new char
;

 WideCharToMultiByte(CP_UTF8, 0, str1, -1, str2, n, NULL, NULL);

 strOutUTF8 = str2;

 delete[]str1;

 str1 = NULL;

 delete[]str2;

 str2 = NULL;

 return strOutUTF8;

}

2、将UTF8转换成GBK

string UTF8ToGBK(const std::string& strUTF8)

{

 int len = MultiByteToWideChar(CP_UTF8, 0, strUTF8.c_str(), -1, NULL, 0);

 unsigned short * wszGBK = new unsigned short[len + 1];

 memset(wszGBK, 0, len * 2 + 2);

 MultiByteToWideChar(CP_UTF8, 0, (LPCTSTR)strUTF8.c_str(), -1, wszGBK, len);

 len = WideCharToMultiByte(CP_ACP, 0, wszGBK, -1, NULL, 0, NULL, NULL);

 char *szGBK = new char[len + 1];

 memset(szGBK, 0, len + 1);

 WideCharToMultiByte(CP_ACP,0, wszGBK, -1, szGBK, len, NULL, NULL);

 //strUTF8 = szGBK;

 std::string strTemp(szGBK);

 delete[]szGBK;

 delete[]wszGBK;

 return strTemp;
}

转自：http://www.cppblog.com/zgysx/articles/13085.html