[Qt-interest] QRunnable question

[Thiago Macieira]

Em Terça-feira 04 Maio 2010, às 12:23:31, amulya rattan escreveu:
> Guys,
> 
> Since QRunnable doesn't inherit from QObject, can i do this:
> 
> class MyTask : public QObject, public QRunnable
> {
>     Q_OBJECT
> protected:
>     void run()
>     {
>        qDebug() << "asdfa";
>     }
> }
> 
> and expect signal/slots to work? The reason I'd like this to work is i dont
> want to use QThread, but QThreadPool. My application has a lot of threads
> already running which i'd like to take advantage of. Secondly, task is
> heavy so more the threads are working on it, better it would be.

Yes, you can do that.

Be careful though that your object is not moved to the thread it gets run on. 
So your signals should work, but your slots will maybe be called in the wrong 
thread.

In general, I'd recommend the approach above for signals only, just as with 
normal QThread.

-- 
Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org
  Senior Product Manager - Nokia, Qt Development Frameworks
      PGP/GPG: 0x6EF45358; fingerprint:
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