ui->tableView->setModel(myModel);

ui->tableView->setColumnWidth(0, 71);

ui->tableView->setColumnWidth(1, 71);

ui->tableView->setColumnWidth(2, 71);

ui->tableView->show();

db->closeDB();

}

系统广播和聊天UDP即可

void Daemon::on_send()

{

QByteArray sysMsg;

QDataStream tosend(&sysMsg,QIODevice::WriteOnly);

tosend.setVersion(QDataStream::Qt_4_6);

QString mytype="MSG_SERVER_INFO";

tosend<<(quint16)0<servTextEdit->toPlainText();

tosend.device()->seek(0);

tosend<<(quint16)(sysMsg.size()-sizeof(quint16));

if(!udpSocket->writeDatagram(sysMsg.data(),sysMsg.size(),QHostAddress("192.168.1.255"),6666))

QMessageBox::warning(NULL,"message broadcast","error");

ui->servTextEdit->clear();

}