can not call function of different class

[JadeN001]

@JonB yeah u r right. Here is problem in m_pClientsocket. Thank you for direct me. now, I am trying to solve socket problem

[JadeN001]

I have define m_pClientsocket in constructor of class
but it failed to access in send_MsgToServer().
because ,If I define in constuctor then when formclient class define the object on connection class

FormClient::FormClient(QString name, QWidget *parent) :
    QWidget(parent),
    ui(new Ui::FormClient)
{
    ui->setupUi(this);
    delegate=new mydelegate(this);
    mw=new connection(this);
 
}

At that time value of socket is getting changed.
So the changes it bu moving the

    m_pclientsocket= new QTcpSocket(this);

in to another main function.

 void connection::on_pushButton_connect_clicked()
{
    m_pclientsocket= new QTcpSocket(this);

    ui->textEdit_Sendname->clear();
   m_pclientsocket->connectToHost(ui->textEdit_IP->toPlainText(),quint16(ui->textEdit_Port->toPlainText().toInt()));
   if(m_pclientsocket->waitForConnected(1000)){
   qDebug()<<"connected"<<m_pclientsocket;
   ui->label_connection->setText("Connected to Server");
   }
}

send_MsgToServer() can not access it . where i am wrong.? what could be solution?

[JadeN001]

In send_MsgToServer(). the ans of

void connection::send_MsgToServer(QString msg)
{ 
qDebug()<<"in sendmsgserver"<<m_pclientsocket;
    m_pclientsocket->write(msg.toStdString().c_str());
    qDebug()<<"message sended "<<msg;
}

in sendmsgserver QApplication(0x22fe28)
QIODevice::write (QApplication): device not open

what it is indicating? How can be value of socket be like QApplication.

[SGaist]

Hi,

Why are you creating a new QTcpSocket each time you call on_pushButton_connect_clicked ?

[aha_1980]

And why are you using waitForConnected?

this cannot work. use signals&slots!

regards

[JadeN001]

@SGaist because the Problem i am facing :
if I called new QTcpSocket from constructor,then

FormClient::FormClient(QString name, QWidget *parent) :
    QWidget(parent),
    ui(new Ui::FormClient)
{
    ui->setupUi(this);
    delegate=new mydelegate(this);
    mw=new connection(this);
 
}

this class create QTcpSocket evety time when mw=new connection(this); called.
because of that the void connection::send_MsgToServer(QString msg)
get different value of QTcpsocket.

[JadeN001]

@aha_1980 yeah i will correct it.but my problem is still there.

[SGaist]

Currently, with the code you provided, it seems you already have an architectural problem.

Can you describe what you are exactly trying to build ?

[JadeN001]

@SGaist I am creating one QTableview on clientside.when ever client connected,one editor for chatting will create in that tableview.

If want to send message to John from this editor.but when i send message from particular editor the value of QtcpSocket i am getting is somthing like this "

in sendmsgserver QApplication(0x22fe28)
QIODevice::write (QApplication): device not open

connection.cpp is class where socket is created.
formclient.cpp is class of widgets of chatting.

[JadeN001]

Can anyone suggest me , have I worked in a proper way or not?