Update data send from class B to class A

[Isidro Perla]

Hello!, I want to send the values of the global var time from my class myopenglwidget.cpp to mainwindow.cpp, in a label called lb_ax, My var time changes values constantly, and I need to sending from myopenglwidget to mainwindow, those values in that label, here are some fragments of the most importantly part of my code:

//mainwindow.cpp

MainWindow::MainWindow(QWidget *parent) :
QMainWindow(parent),
ui(new Ui::MainWindow)
{
ui->setupUi(this);

MyOpenGLWidget *a = new MyOpenGLWidget;

bool result = connect(a, SIGNAL(textChanged(QString)),ui->lb_ax, SLOT(setText(QString)));

qDebug()<<"conn;" <<result;

a->someFunctionThatChangesText("");

QApplication::processEvents();
QWidget::repaint();

update();

}

//mainWindow.h

public:
void UpdateLabel(const QString text);

//myopenglwidget.cpp

void MyOpenGLWidget::someFunctionThatChangesText(const QString& newtext){
emit textChanged(QString::number(time));
}

//myopenglwidget.h

signals:
void textChanged(QString);
public:
void someFunctionThatChangesText(const QString& newtext);

I want to know what is the problem here, because now only send the initialized value of the var, that is 0, some ideas please??

[Christian Ehrlicher]

It's the same question as here:
https://forum.qt.io/topic/112755/send-real-time-data-from-another-class-to-mainwindow-label/2

Don't double post.