How to use QThread::exec()

[wysota]

You don't need a separate thread for that... you can do this all in one thread. If you want to "call" methods of a separate thread from the "main" thread, it involves synchronisation between those two. You can use signals & slots for that and then it is as easy as connecting them and emitting a signal. But remember that it is all an event driven mechanism and two threads don't wait for each other here...

Some small partial example (this is not a Newbie section, so I expect you can fill the rest).

class MyThread : public QThread{
public:
    void run(){ 
        QTcpSocket *sock = new QTcpSocket;
        connect(this, SIGNAL(sendToSocket(...)), sock, SLOT(...)));
        // ...
        exec();
    }
// ...
};
 
MyThread *thr1;
//...
connect(thr1, SIGNAL(messageReceived(...)), this, SLOT(onMessageReceived(...)));
connect(this, SIGNAL(sendToThread(...)), thr1, SIGNAL(SendToSocket(...)));
thr1->start();

class MyThread : public QThread{
public:
    void run(){ 
        QTcpSocket *sock = new QTcpSocket;
        connect(this, SIGNAL(sendToSocket(...)), sock, SLOT(...)));
        // ...
        exec();
    }
// ...
};

MyThread *thr1;
//...
connect(thr1, SIGNAL(messageReceived(...)), this, SLOT(onMessageReceived(...)));
connect(this, SIGNAL(sendToThread(...)), thr1, SIGNAL(SendToSocket(...)));
thr1->start();

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