QTcpSocket中的readyReady信号触发不了

[上善若水邻]

我用QTcpSocket写了一个程序与QT自带的示例程序连接成功，但是却无法触发readyRead()信号。请问这是什么问题？？

#include "myclient2.h"

MyClient2::MyClient2(QWidget *parent, Qt::WFlags flags)
    : QDialog(parent, flags)
{
    ui.setupUi(this);
    m_TcpSocket = new QTcpSocket(this);
    connect(ui.pushButton,SIGNAL(clicked()),this,SLOT(CF_Connect()));
    //connect(m_TcpSocket,SIGNAL(hostFound()),this,SLOT(CF_HostFound()));
    connect(m_TcpSocket,SIGNAL(readyRead()),this,SLOT(CF_ReadyRead()));
    connect(m_TcpSocket, SIGNAL(error(QAbstractSocket::SocketError)),
            this, SLOT(displayError(QAbstractSocket::SocketError)));
}

MyClient2::~MyClient2()
{

}
void MyClient2::CF_Connect()
{    
    m_iBlockSize =0;
    m_TcpSocket->abort();
    //connect(m_TcpSocket,SIGNAL(disconnected()),m_TcpSocket,SLOT(deleteLater()));
    m_TcpSocket->connectToHost(ui.Caddress->text(),ui.Cport->text().toInt());
    
}
void MyClient2::CF_ReadyRead()
{

    QMessageBox::information(NULL,tr("Yes Connect"),tr("YES"));
    QDataStream in(m_TcpSocket);
    in.setVersion(QDataStream::Qt_4_0);
    if(m_iBlockSize == 0)
    {
        if(m_TcpSocket->bytesAvailable() < (int)sizeof(quint16))
        {
            return ;
        }
    }
    in>>m_iBlockSize;
    if(m_TcpSocket->bytesAvailable() < m_iBlockSize)
    {
        return ;
    }
    QString s_NextFortune;
    in>>s_NextFortune;
    if(s_NextFortune == m_sReadyRead)
    {
        QTimer::singleShot(0,this,SLOT(CF_Connect()));
        return ;
    }
    m_sReadyRead = s_NextFortune;
    ui.textEdit->setText(m_sReadyRead);
    return ;

}
void MyClient2::CF_HostFound()
{
    //QMessageBox::information(this,tr("Yes ChostFound"),tr("hostFound"));
}
void MyClient2::displayError(QAbstractSocket::SocketError socketError)
{
    switch (socketError) {
    case QAbstractSocket::RemoteHostClosedError:
        break;
    case QAbstractSocket::HostNotFoundError:
        QMessageBox::information(this, tr("Fortune Client"),
                                 tr("The host was not found. Please check the "
                                    "host name and port settings."));
        break;
    case QAbstractSocket::ConnectionRefusedError:
        QMessageBox::information(this, tr("Fortune Client"),
                                 tr("The connection was refused by the peer. "
                                    "Make sure the fortune server is running, "
                                    "and check that the host name and port "
                                    "settings are correct."));
        break;
    default:
        QMessageBox::information(this, tr("Fortune Client"),
                                 tr("The following error occurred: %1.")
                                 .arg(m_TcpSocket->errorString()));
    }

    
}
注我几个函数都声明为了slot

[weigang198248832]

你的SOCKET连接建立没？对方给你发数据没？CF_ReadyRead（）确定放到SLOT的声明中

[上善若水邻]

[Quote=引用 1 楼 weigang198248832 的回复:]
你的SOCKET连接建立没？对方给你发数据没？CF_ReadyRead（）确定放到SLOT的声明中
[/Quote]
现在发现原来是没有连接上，只是触发hostfound（）信号而已，我加上connected()信号和error()信号，才发现没连接成功也没有触发error信号，问题出在哪里啊？？怎么就这么难啊。

[上善若水邻]

解决了原来是我建工程的时候没有勾上网络模块。。。XXXX的。。。

[kongyanmin]

那编译时没有有报错吗

[swift19221]

qt 传文件，发现 分帧传输，
发现服务端并不是每收到一帧就触发一次 readyread信号，
怎么解决？