Wireshark mailing list archives
Re: Slot on main thread not called when signal is emitted from another thread
From: Paul Offord <Paul.Offord () advance7 com>
Date: Wed, 16 Dec 2015 11:29:43 +0000
Do you mean like this? syncro.h #ifndef SYNCRO_H #define SYNCRO_H #include <QtCore> #include "mythread.h" class Syncro : public QObject { Q_OBJECT public: Syncro(); void Initialise(MyThread *); public slots: void jumpToFrame(int); }; #endif // SYNCRO_H Syncro.cpp . . Syncro::Syncro() { setParent(QApplication::instance()); } . . The setParent(QApplication::instance()) shows as an error in VS - incomplete type is not allowed. Don't I have to specify the QApplication instance rather than the class name? Cheers...Paul -----Original Message----- From: wireshark-dev-bounces () wireshark org [mailto:wireshark-dev-bounces () wireshark org] On Behalf Of Gerald Combs Sent: 15 December 2015 21:19 To: Developer support list for Wireshark <wireshark-dev () wireshark org> Subject: Re: [Wireshark-dev] Slot on main thread not called when signal is emitted from another thread On 12/15/15 8:15 AM, Paul Offord wrote:
When I run the code the extra thread starts OK and it starts to cycle around the loop with the 3 second sleep. However, the connected slot function Syncro::jumpToFrame(int new_frame) does not get called. If I change the connect from QueuedConnection to DirectConnection the slot function gets called but, as expected, in the context of my serviceThread. I need the slot function to run on the main thread. I guess it is because my jumpToFrame slot function is not on the main thread event loop, but I don’t understand how to get it on the loop.
Can you try adding a constructor to Syncro, and add either moveToThread(QApplication::instance()->thread()); or setParent(QApplication::instance()); to it? I'm not sure if QObjects have a valid thread affinity by default. ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe ______________________________________________________________________ This message contains confidential information and is intended only for the individual named. If you are not the named addressee you should not disseminate, distribute or copy this e-mail. Please notify the sender immediately by e-mail if you have received this e-mail by mistake and delete this e-mail from your system. Any views or opinions expressed are solely those of the author and do not necessarily represent those of Advance Seven Ltd. E-mail transmission cannot be guaranteed to be secure or error-free as information could be intercepted, corrupted, lost, destroyed, arrive late or incomplete, or contain viruses. The sender therefore does not accept liability for any errors or omissions in the contents of this message, which arise as a result of e-mail transmission. Advance Seven Ltd. Registered in England & Wales numbered 2373877 at Endeavour House, Coopers End Lane, Stansted, Essex CM24 1SJ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ______________________________________________________________________ ___________________________________________________________________________ Sent via: Wireshark-dev mailing list <wireshark-dev () wireshark org> Archives: https://www.wireshark.org/lists/wireshark-dev Unsubscribe: https://wireshark.org/mailman/options/wireshark-dev mailto:wireshark-dev-request () wireshark org?subject=unsubscribe
Current thread:
- Slot on main thread not called when signal is emitted from another thread Paul Offord (Dec 15)
- Re: Slot on main thread not called when signal is emitted from another thread Gerald Combs (Dec 15)
- Re: Slot on main thread not called when signal is emitted from another thread Paul Offord (Dec 16)
- Re: Slot on main thread not called when signal is emitted from another thread Paul Offord (Dec 16)
- Re: Slot on main thread not called when signal is emitted from another thread Paul Offord (Dec 16)
- Re: Slot on main thread not called when signal is emitted from another thread Paul Offord (Dec 16)
- Re: Slot on main thread not called when signal is emitted from another thread Gerald Combs (Dec 15)