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);
};

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);
}

}

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