过来抱怨下，也方便下后来的兄弟。
Qt4.5.0 + WindowsXP + Mingw
------------
使用QNetworkProxy::applicationProxy()后报"HTTP request failed"
DlgFavIcon():QDialog()
{
finished= false;
ui.setupUi(this);
m_proxy = new QNetworkProxy(QNetworkProxy::HttpProxy, "XXXXXXXXXX", 8080, "XXXX", "XXXXXXXXXXXX");
//QNetworkProxy::setApplicationProxy(*m_proxy);
http.setProxy(*m_proxy);
connect(ui.pushButton, SIGNAL(clicked()),
this, SLOT(displayIcon()));
connect(&http, SIGNAL(requestFinished(int, bool)),
this, SLOT(workFinished(int, bool)));
}
------------
取消上面的注释后，导致"HTTP request failed"，
具体原因还没找着，改天贴上。
