UTF8Convert

CString UTF8Convert(CString str, int sourceCodepage, int targetCodepage)
{
    int len = str.GetLength();
    int unicodeLen = MultiByteToWideChar(sourceCodepage, 0, str, -1, NULL, 0);
    wchar_t* pUnicode = new wchar_t[unicodeLen + 1];

    memset(pUnicode, 0, (unicodeLen + 1)*sizeof(wchar_t));
    MultiByteToWideChar(sourceCodepage, 0, str, -1, (LPWSTR)pUnicode, unicodeLen);

    BYTE* pTargetData = NULL;
    int targetLen = WideCharToMultiByte(targetCodepage, 0, (LPWSTR)pUnicode, -1, (char*)pTargetData, 0, NULL, NULL);

    pTargetData = new BYTE[targetLen + 1];
    memset(pTargetData, 0, targetLen + 1);

    WideCharToMultiByte(targetCodepage, 0, (LPWSTR)pUnicode, -1, (char*)pTargetData, targetLen, NULL, NULL);

    CString  rt;
    rt.Format("%s", pTargetData);
    delete pUnicode;
    delete pTargetData;
    return rt;
}

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