QT Start timer with thread

When writing a QT program, it is often necessary to use the timer Qtimer to perform some timed tasks, but when the timed task executes too long, it will affect the response of the entire interface, so it is expected to use another worker thread to execute the timer, in general you can choose to derive a thread class from Qthread. Then overload run and execute the task logic, and here's an example that doesn't derive from Qthread and use Qtimer.

Main window class header file join:

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1. qthread* _voicethread;

2. qtimer* _voicetimer;

Constructor join:

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2. //Use a thread to run the timer   

4. _voicethread = new qthread;

6. _voicetimer = new Qtimer;

8. _voicetimer->setsingleshot (true);

10. //Start the timer before Movetothread, or not in a thread, call start directly will fail   

12. _voicetimer->start (200);

14. _voicetimer->movetothread (_voicethread);

16. //Timer object and this is not in a thread, so the connection is specified here as QT::D irectconnection, triggered directly by the timer thread _onvoicetimeout   

18. Connect (_voicetimer, SIGNAL (), this , SLOT (_onvoicetimeout ()), Qt::D irectconnection);

20. //Connect the timer slot to stop the timer   

22. Connect (this, SIGNAL (Stop ()), _voicetimer, SLOT (Stop ()));

24. _voicethread->start ();

Destructor joins:

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2. Emit stop ();

4. _voicethread->quit ();

6. _voicethread->wait ();

10. Delete  _voicetimer;

12. Delete  _voicethread;

Timer Slots:

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2. void test::_onvoicetimeout ()

4. {

6. //Perform Tasks   

8. // ...   

10. _voicetimer->start (1000);

12. }

QT Start timer with thread