toStdstring 报错 [复制链接]

我用的是QT4.7.3
代码段是：
QNetworkRequest req(postUrl);
    if(autoKeepReferer && !refererUrl.isEmpty()){
        req.setRawHeader("Referer", refererUrl.toStdString().c_str());
    }
    req.setRawHeader("User-Agent", "Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US) AppleWebKit/534.3 (KHTML, like Gecko) Chrome/6.0.472.63 Safari/534.3 ChromePlus/1.4.2.0");
    http.post(req, ba);

出现的如下错误：Error 1 error C2039: 'toStdString' : is not a member of 'QString' d:\project\GClient\GClient\httpget.cpp 186

                             Error 2 error C2228: left of '.c_str' must have class/struct/union d:\project\GClient\GClient\httpget.cpp 186

This operator is only available if Qt is configured with STL compatibility enabled.

楼主试下这个行不。
然后可以看看那这个https://www.google.com/search?hl=en&newwindow=1&site=&source=hp&q=qt+stl+compatibility+enabled&oq=qt+STL+compatibility&aq=1K&aqi=g1g-K1g-mK1g-bK1g-bsK1&aql=&gs_l=hp.1.1.0j0i30j0i5i30j0i8i30j0i8i10i30.1032.1032.0.3643.1.1.0.0.0.0.188.188.0j1.1.0...0.0.hue8T7ZzOKY

谢谢，谢谢两位老大