QObject::connect: No such slot MainWindow::indata()

mganesh

This is my program foe simple client side receiver
here signal slot error coming out
QObject::connect: No such slot MainWindow::indata()

Folowing main cpp prgram

**#include "mainwindow.h"
#include<stdlib.h>
#include "QTime"
#include "QTimer"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
: QMainWindow(parent)
, ui(new Ui::MainWindow)
{
ui->setupUi(this);
// QTimer *timer = new QTimer(this);
clientsocket=new QTcpSocket(this);
clientsocket->connectToHost("127.0.0.1",2555,QIODevice::ReadWrite);
if (clientsocket->waitForConnected(300000))
{
ui->textEdit->setText("Connected to Server");
clientsocket->write("server\r\n\r\n\r\n\r\n");
clientsocket->waitForBytesWritten(1000);

}
else
{
    ui->textEdit->setText("Server Offline");
  clientsocket->disconnectFromHost();
  clientsocket->close();
}
connect(clientsocket,SIGNAL(readyRead()),this,SLOT(indata()));
connect(clientsocket,SIGNAL(disconnected()),this,SLOT(lineStatus()));

}

MainWindow::~MainWindow()
{
delete ui;
}

void MainWindow::lineStatus()
{
ui->textEdit->setText("Server Disconnected");
}

void MainWindow::indata()
{
QByteArray array;

 qDebug() << "Reading: " << clientsocket->bytesAvailable();
 qDebug() <<"sec"<< clientsocket->readAll();
array=clientsocket->readAll();
char* buffer = array.data();

ui->textEdit_3->setText(buffer);

QByteArray ba_as_hex_string = array.toHex();

qDebug()<<ba_as_hex_string;

}

void MainWindow::on_pushButton_2_clicked()
{
QString data;
data=ui->textEdit_2->toPlainText();
QByteArray abc;
abc=data.toUtf8();
// qDebug()<<abc;
clientsocket->write(abc);
clientsocket->flush();

}**

Header file

#ifndef MAINWINDOW_H
#define MAINWINDOW_H

#include <QMainWindow>
#include<QTcpSocket>
#include<QTcpServer>
#include<QString>
#include<QtNetwork>
#include <QIODevice>
#include<QAbstractSocket>
#include <QObject>

QT_BEGIN_NAMESPACE
namespace Ui { class MainWindow; }
QT_END_NAMESPACE

class MainWindow : public QMainWindow
{
Q_OBJECT

public:
MainWindow(QWidget *parent = nullptr);
~MainWindow();

QTcpSocket  *clientsocket;


void indata();


void lineStatus();

private slots:
void on_pushButton_2_clicked();

private:
Ui::MainWindow *ui;

};
#endif // MAINWINDOW_H

jsulm

@mganesh said in QObject::connect: No such slot MainWindow::indata():

void indata();

This needs to be in slots: part of your class to be a slot...

mganesh

can u elaborate ???
tried

SLOT(void indata())
same error

Pl45m4

@mganesh

indata() and lineStatus() belong to slots: section in your header file.

JonB

@mganesh

Please read through https://doc.qt.io/qt-5/signalsandslots.html, looking at the examples.
Please move away from SIGNAL/SLOT() macros, which are very old, and use the "new" syntax described there.