custom class with its own QTimer and QThread

Question

I would like to create a class that has its own QTimer and QThread for some projects for Robot's sensors. After some searching, this is what I came up with

#include <QCoreApplication>
#include <QTimer>
#include <QThread>
#include <QObject>
#include <QDebug>


//#####################( Robot Class  )#########################3

class Robot : public QObject
{
public:
    Robot(QObject *parent = 0);
    ~Robot();

private:
    QTimer  *mQTimer;
    QThread *mQThread;

public slots:
    void update();

};

Robot::Robot(QObject *parent)
    : QObject(parent)
{
     mQTimer = new QTimer(0);
    mQThread = new QThread(this);

    mQTimer->setInterval(1);
    mQTimer->moveToThread(mQThread);

    connect(mQTimer, SIGNAL(timeout()), this, SLOT(update()));
    connect(mQThread, SIGNAL(started()), mQTimer, SLOT(start()));

   mQThread->start();
   //mQTimer->start();

}

Robot::~Robot()
{
    delete mQTimer;
    delete mQThread;
}

void Robot::update()
{
    qDebug() << "Robot is updating ...";
}

//##################( Main )###########################
int main(int argc, char *argv[])
{
    QCoreApplication a(argc, argv);

    Robot *myRobot = new Robot(0);

    return a.exec();
}

I'm getting this error

QObject::connect: No such slot QObject::update() in ..\untitled1\main.cpp:34
QObject::connect: No such slot QObject::update() in ..\untitled1\main.cpp:34

Answer 1

You are missing the Q_OBJECT macro in your class also try to avoid naming the methods like that because you can mix it with Qt methods names. Also make additional header and cpp file for each class you create in this case make robtot.h and robot.cpp.

class Robot : public QObject
{
Q_OBJECT
public:
    Robot(QObject *parent = 0);
    ~Robot();
...