How can I use functions from a class in a thread?

[Uriel Machado]

Hello, I am working on a project which I need to use the functions and variables of a class in a thread. The RadarGUI class is a widget that is created in the main.cpp, and the thread is a Qthread that is created as a class. I try to add the header of the RadarGUI widget in the thread, but does not let me use the functions, anyone know how I can solve this?
I cant use static functions because the functions needs to use the variables of the class.

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    RadarGUI w; //I need to use the functions and variables of w;
    w.show();
    return a.exec();
}

header of RadarGUI:

class RadarGUI : public QMainWindow
{
    Q_OBJECT
public:
    RadarGUI(QWidget *parent = nullptr); 
    ~RadarGUI();                          
    void radarwidget();                   
    void plotearM(ADC);                   
    void plotear_punto(int,int,int);      
private:
    Ui::RadarGUI *ui;                           
    QChartView *chartView;                        
    QPolarChart *grafPol = new QPolarChart();     
    QValueAxis *angularAxis = new QValueAxis();   
    QValueAxis *radialAxis = new QValueAxis();  
    hilo_cargarMatrizMain hilo1;
    hilo_plotMain hilo2;
};

header of thread:

class hilo_plotWorker: public QThread
{
public:
    hilo_plotWorker();
    void run(); 
};

[JonB]

@Uriel-Machado
Hello and welcome.

Before you go any further: since it is a Qt rule you must not access any UI stuff in a secondary thread --- quite apart from the need for mutexes --- what do you think you are going to access in RadarGUI from a thread anyway?

Threads can send signals to advise the UI thread of something happening and the UI thread can perform the UI action for them.