threads, signals and slots

[cyclic]

hi,

im trying to use a thread to do some background work. It takes a bunch of messages and checks the status of each until it has a "finished" status.

messagestatusthread.h

class MessageStatusThread : public QThread
{
public:
    MessageStatusThread(QList<Message*> *messages);
    void run();
 
private:
    QList<Message*> *m_messages;
    QMultiMap<QString, Address*> *unfinishedMesasgeStatusMap;
 
    QString* buildXml();
    void parseXml(QString data);
 
public slots:
        void messageStatusFinished(QString);
};

class MessageStatusThread : public QThread
{
public:
    MessageStatusThread(QList<Message*> *messages);
    void run();

private:
    QList<Message*> *m_messages;
    QMultiMap<QString, Address*> *unfinishedMesasgeStatusMap;

    QString* buildXml();
    void parseXml(QString data);

public slots:
        void messageStatusFinished(QString);
};

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messagestatusthread.cpp run method

void MessageStatusThread::run()
{
    while(!unfinishedMesasgeStatusMap->isEmpty()) {
 
        CommunicationFacade *communication = new CommunicationFacade();
        connect(communication, SIGNAL(communicationFinished(QString)), this, SLOT(messageStatusFinished(QString)));
 
        communication->sendRequest(buildXml());
 
        sleep(30);
    }
 
}

void MessageStatusThread::run()
{
    while(!unfinishedMesasgeStatusMap->isEmpty()) {

        CommunicationFacade *communication = new CommunicationFacade();
        connect(communication, SIGNAL(communicationFinished(QString)), this, SLOT(messageStatusFinished(QString)));

        communication->sendRequest(buildXml());

        sleep(30);
    }
    
}

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I'm using the CommunicationFacade in other parts of the program but not in a separate thread and there it works.

I get Object::connect: No such slot QThread::messageStatusFinished(QString) in messagestatusthread.cpp:34 when I run the program.

The messageStatusFinished(QString) slot is implemented in messagestatusthread.cpp.

Can somebody point out what I'm doing wrong?

Thanks

[victor.fernandez]

You forgot to add the Q_OBJECT macro in the class definition.

[cyclic]

when I add that I get:

/src/messagestatusthread.cpp:13: undefined reference to `vtable for MessageStatusThread'

[wysota]

Rerun qmake afterwards.

[cyclic]

thanks, that helped

but now things get really strange.
Now i don't get any errors but the slot is not executed, nothing happens

[spirit]

you should add exec (for enabling event loop in a thread) in you run method if you need process signal in you thread.

[cyclic]

thank you all!

now it works