QTcpSocket在QThread中运行的问题 - QTCN开发网

只看楼主倒序阅读楼主发表于: 2011-10-12

我写了一个QTcpSocket在QThread中运行的例子，能正常接收数据，但是调用doWrite函数发送数据时，提示“QSocketNotifier: socket notifiers cannot be enabled from another thread”，跪求高手解惑，跪求啊，急

复制代码

main.cpp
#include <QApplication>
#include "core.h"
int main(int argc,char *argv[])
{
QApplication app(argc,argv);
CORE coree;
return app.exec();
}

复制代码

core.h
#ifndef CORE_H
#define CORE_H
#include <QObject>
#include <tcp.h>
#include <QTimer>
class CORE:public QObject
{
Q_OBJECT
public:
CORE(QObject *parent=0);
private slots:
void CycleWrite();
void StartWrite();
private:
tcp *tcpPtr;
QTimer *timer;
};
#endif // CORE_H

复制代码

core.cpp
#include "core.h"
#include <QDebug>
CORE::CORE(QObject *parent):QObject(parent)
{
tcpPtr=new tcp;
tcpPtr->start();
timer=new QTimer;
connect(timer,SIGNAL(timeout()),this,SLOT(CycleWrite()));
connect(tcpPtr,SIGNAL(connectSucc()),this,SLOT(StartWrite()));
}
void CORE::CycleWrite()
{
tcpPtr->doWrite(QString("111"));
}
void CORE::StartWrite()
{
timer->start(5000);
}

复制代码

tcp.h
#ifndef TCP_H
#define TCP_H
#include <QThread>
#include <QTcpSocket>
#include <QTimer>
class tcp:public QThread
{
Q_OBJECT
public:
tcp(QObject *parent=0);
signals:
void connectSucc();
public slots:
void doWrite(QString str);
protected:
void run();
private:
QTcpSocket *tcps;
};
#endif // TCP_H

复制代码

tcp.cpp
#include "tcp.h"
#include <QDebug>
tcp::tcp(QObject *parent):QThread(parent)
{
}
void tcp::doWrite(QString str)
{
tcps->write(str.toLocal8Bit(),str.length());
}
void tcp::run()
{
tcps=new QTcpSocket(0);
tcps->connectToHost("192.168.1.18",6000);
connect(tcps,SIGNAL(connected()),this,SIGNAL(connectSucc()));
exec();
}

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只看该作者 1楼发表于: 2011-10-12

... 你是两个论坛都注册了么...

离线oscarboycn

新手上路

只看该作者 2楼发表于: 2011-10-13

QTcpSocket在哪个线程创建，就只能在哪个线程使用
你的QTcpSocket是在子线程创建的，但是调用的时候
void CORE::CycleWrite()
{
tcpPtr->doWrite(QString("111"));
}应该是在主线程调用的，所以会警告
http://hi.baidu.com/cyclone/blog/item/a33794ee00acba262cf53442.html
http://blog.csdn.net/dbzhang800/article/details/6554104

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