[Interest] QThread

[André Somers]

Graham Labdon schreef op 24-3-2014 12:38:
> Hi
> I am experimenting with QThreads
> The basic idea is to have a thread performing some task and to have a button on the UI that can stop this operation
>
> So I have a class that will perform the operation called GeneratorThread that has a start slot
> In the main ui class I create an instance of the class -
>
> m_generatorThread = new GeneratorThread(this);
>
> Then I call moveToThread  and make the connections-
> m_generatorThread->moveToThread(m_thread)
> connect(m_thread,&QThread::started,m_generatorThread,& GeneratorThread::start);
> connect(m_generatorThread,&GeneratorThread::finished,m_thread,&QThread::quit);
> connect(m_generatorThread,&GeneratorThread::finished,m_generatorThread,&GeneratorThread::deleteLater);
> connect(m_thread,&QThread::finished,m_generatorThread,&GeneratorThread::deleteLater);
>
> And finally I start the thread
> m_thread->start()
>
> The generatorThread simply writes a debug message every second and I see this happening.
> The problem is that my ui does not respond to any input - so my stop button will not work
>
> I am obviously doing something wrong and would appreciate any help
Yeah, you are doing some things wrong.
Your moveToThread will fail, because GeneratorThread (confusing name for 
what seems to be a worker class?) has a parent. That causes that your 
worker is not in a different thread at all, but blocking your main 
thread instead.

André