Problem with connect with object created dynamically

[A Former User]

I have a class that emit a signal in this way:

void CustomTracer::mouseMoveEvent(QMouseEvent *event)
{
    /* let the crosshair cursor follow the mouse position */

    if (click_right == BTN_FALSE)
    {
    if(!mouseMarkerX) mouseMarkerX = new QCPItemStraightLine(this);
    if(!mouseMarkerY) mouseMarkerY = new QCPItemStraightLine(this);

     positionX = xAxis->pixelToCoord( event->pos().x() );

    emit sign_tracer_bis();
}

in MainWindow:

void MainWindow::Altezza_LdC_Acq()
{
    QDockWidget *dock = new QDockWidget;
    dock->setMinimumWidth(500);
    dock->setMaximumWidth(500);
    dock->setMinimumHeight(500);
    dock->setMaximumHeight(500);

    Altezza_acq_bis = new CustomTracer(dock);
    Altezza_acq_bis->resize(500,500);
    graph_Acq_bis = Altezza_acq_bis->addGraph();
    double a;
    double b;
    double m;
    double n;
    a= ui->Grafico_Altezza_LdC_Acquisizione->x1;
    b= ui->Grafico_Altezza_LdC_Acquisizione->x2;
    m= ui->Grafico_Altezza_LdC_Acquisizione->y1;
    n= ui->Grafico_Altezza_LdC_Acquisizione->y2;
    Altezza_acq_bis->xAxis->setRange(a,b);
    Altezza_acq_bis->yAxis->setRange(m,n);
    graph_Acq_bis->setData(graph2->data());

    dock->setFloating(true);
    dock->show();

    QObject::connect(Altezza_acq_bis,SIGNAL(sign_tracer_bis()),this,SLOT(Tracer_Acq()));
}

and the slot is:

void MainWindow::Tracer_Acq()

{

    double x = (Altezza_acq_bis->positionX);
    int j;
    double u;
    double posX;


    QString h = QString::number(x,'f',2);
    double x1 = h.toDouble();
    for (int i=0; i<1000; i++)
    {
        if  (abs(xalt[i] - x1) <0.001)
        {

           u= xalt[i];
           j=i;

           Altezza_acq_bis->positionY = f_altezza[j];
           posX = xalt[j];
           if((Altezza_acq_bis->mouseMarkerX) && (Altezza_acq_bis->mouseMarkerY))

           {
              Altezza_acq_bis->mouseMarkerX->point1->setCoords(Altezza_acq_bis->positionX, 0);//VERTICALE
              Altezza_acq_bis->mouseMarkerX->point2->setCoords(Altezza_acq_bis->positionX, 1);//VERTICALE
              Altezza_acq_bis->mouseMarkerY->point1->setCoords(0,Altezza_acq_bis->positionY);//ORIZZONTALE
              Altezza_acq_bis->mouseMarkerY->point2->setCoords(1, Altezza_acq_bis->positionY);//ORIZZONTALE


              QString x_text = QString::number(Altezza_acq_bis->positionX,'f',2);
              QString y_text = QString::number(Altezza_acq_bis->positionY);

              QString coord_p = QString("%1, %2").arg(x_text,y_text);
              QCursor cursor;
              QToolTip::showText(cursor.pos(),coord_p,this,QRect(),2000);

           }}


        }
           Altezza_acq_bis->replot();
     }

[VRonin]

What is the problem?
First thing to try is replacing QObject::connect(Altezza_acq_bis,SIGNAL(sign_tracer_bis()),this,SLOT(Tracer_Acq())); with QObject::connect(Altezza_acq_bis,&CustomTracer::sign_tracer_bis,this,&MainWindow::Tracer_Acq);

[A Former User]

@VRonin said in Problem with connect with object created dynamically:

QObject::connect(Altezza_acq_bis,&CustomTracer::sign_tracer_bis,this,&MainWindow::Tracer_Acq);

thanks very much!!! I wrote bad the connect...now it's ok!! thanks