QT网络编程之文件下载 QNetworkRequest QNetworkReply QNetworkAccessManager
voidFileDownLoad::start(){m_file=newQFile(m_filePath,this);//m_filePath下载地址if(!m_file->open(QIODevice::WriteOnly)){emitresult(false,tr("Writefileerror!\n")+m_file->errorString());return;}QUrlu(m_url);