UNICODE GBK UTF-8 编码互转（VC++）

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1：UNICODE和GBK互转

wstring MBytesToWString(const char *lpcszString){int len = strlen(lpcszString);int unicodeLen = ::MultiByteToWideChar(CP_ACP, 0, lpcszString,  - 1, NULL, 0);wchar_t *pUnicode = new wchar_t[unicodeLen + 1];memset(pUnicode, 0, (unicodeLen + 1) *sizeof(wchar_t));::MultiByteToWideChar(CP_ACP, 0, lpcszString,  - 1, (LPWSTR)pUnicode, unicodeLen);wstring wString = (wchar_t *)pUnicode;delete [] pUnicode;return wString;}string WStringToMBytes(const wchar_t *lpwcszWString){char *pElementText;int iTextLen;// wide char to multi chariTextLen = ::WideCharToMultiByte(CP_ACP, 0, lpwcszWString,  - 1, NULL, 0, NULL, NULL);pElementText = new char[iTextLen + 1];memset((void *)pElementText, 0, (iTextLen + 1) *sizeof(char));::WideCharToMultiByte(CP_ACP, 0, lpwcszWString, 0, pElementText, iTextLen, NULL, NULL);string strReturn(pElementText);delete [] pElementText;return strReturn;}

2：GBK和UTF-8互转

string GBKToUTF8(const string &strGBK){string strOutUTF8 = "";WCHAR *str1;int n = MultiByteToWideChar(CP_ACP, 0, strGBK.c_str(),  - 1, NULL, 0);str1 = new WCHAR[n];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[n];WideCharToMultiByte(CP_UTF8, 0, str1,  - 1, str2, n, NULL, NULL);strOutUTF8 = str2;delete [] str1;str1 = NULL;delete [] str2;str2 = NULL;return strOutUTF8;}string UTF8ToGBK(const string &strUTF8){int len = MultiByteToWideChar(CP_UTF8, 0, strUTF8.c_str(),  - 1, NULL, 0);WCHAR *wszGBK = new WCHAR[len + 1];memset(wszGBK, 0, (len+1)*sizeof(WCHAR));MultiByteToWideChar(CP_UTF8, 0, (LPCSTR)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;string strTemp(szGBK);delete [] szGBK;szGBK = NULL;delete [] wszGBK;wszGBK = NULL;return strTemp;}

3：UNICODE和UTF-8互转

wstring UTF8ToWString(const char *lpcszString){int len = strlen(lpcszString);int unicodeLen = ::MultiByteToWideChar(CP_UTF8, 0, lpcszString,  - 1, NULL, 0);wchar_t *pUnicode;pUnicode = new wchar_t[unicodeLen + 1];memset((void *)pUnicode, 0, (unicodeLen + 1) *sizeof(wchar_t));::MultiByteToWideChar(CP_UTF8, 0, lpcszString,  - 1, (LPWSTR)pUnicode, unicodeLen);wstring wstrReturn(pUnicode);delete [] pUnicode;return wstrReturn;}string WStringToUTF8(const wchar_t *lpwcszWString){char *pElementText;int iTextLen = ::WideCharToMultiByte(CP_UTF8, 0, (LPWSTR)lpwcszWString,  - 1, NULL, 0, NULL, NULL);pElementText = new char[iTextLen + 1];memset((void *)pElementText, 0, (iTextLen + 1) *sizeof(char));::WideCharToMultiByte(CP_UTF8, 0, (LPWSTR)lpwcszWString,  - 1, pElementText, iTextLen, NULL, NULL);string strReturn(pElementText);delete [] pElementText;return strReturn;}

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