regex_search 找到字串所有匹配 类似/g

vector<CString>::iterator it;

    for(it = vtNoAlignCH.begin(); it != vtNoAlignCH.end(); it++)
    {
        //宽字节正则
        wstring line = *it;
        wregex rgx(L"[\\u4e00-\\u9fa5]+");
        std::wsmatch ms;  
        bool ret = regex_search(line, ms, rgx);

        std::wstring::const_iterator start = line.begin();
        std::wstring::const_iterator end = line.end();
        while (regex_search(start, end, ms, rgx) )
        {
             start = ms[0].second;
             TRACE("start:%d length:%d \n",ms.position(0),ms.length(0));
        }




    }