how can thread receive data sent by main thread

[Myx]

got this

#include <QThread>
 
class QString;
 
class SerialThread : public QThread
{
    Q_OBJECT
 
    public:
        SerialThread(QObject *parent = 0);
 
    protected:
        void run();
 
    signals:
        void testowy(QString);
};

#include <QThread>

class QString;

class SerialThread : public QThread
{
    Q_OBJECT

    public:
        SerialThread(QObject *parent = 0);

    protected:
        void run();

    signals:
        void testowy(QString);
};

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while putting signal-slot mechanism to deliver some data from thread to my main its enough to do something like this in main thread as i got

SerialThread thread;

(...)
 
connect(&thread, SIGNAL(testowy(QString)),msg,SLOT(append(QString)));

(...)

connect(&thread, SIGNAL(testowy(QString)),msg,SLOT(append(QString)));

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but i would like also to send a QString from main thread to thread

I could call something like thread.publicFunction(QString) from main but i wonder if its a propper way