I need help ; the connect() is not working.

Bit Asterisk

Greetings from Nepal.

We're building a desktop application using Qt Creator. In short, this application uses QTcpSocket and QTcpServer and the socket is multithreaded (using QThread) i.e. different users can connect at a time. MainWindow, MyServer and MyThread are different c++ class.

When a "Host "push button is pressed (mainwindow.cpp), the server is started (myserver.cpp). When a user is connected to the server, the server starts new thread for the connected user (mythread.cpp). When the user sends char/string, the Qthread class receives the char/string. But we want to pass the string to MainWindow and display using QLineEdit. Todo so, we use a signals and slot but it's not working.

// mainwindow.cpp
myThread = new MyThread(); // MyThread is a c++ class
connect(myThread,SIGNAL(chatText(QString)),this,SLOT(updateChat(QString)));

...
...
..
void MainWindow::updateChat(QString str)
{
ui->plainTextEdit_chatInterface->setPlainText(str);
}

mythread.cpp

//readyRead()

void MyThread::readyRead()
{
  data=socket->readAll();
  emit chatText(data);
}

dheerendra

Can you confirm readyRead method is called ? Do you see any error like connect issue on application log window or logs ?

Bit Asterisk

yeah, the readyRead() method is called when a user send something, qDebug()<<data; is showing the char/string. But mainwindow is not receiving the string.

thank you for reply.

Bit Asterisk

Thank you. I solved the problem.