[Interest] QSerialport EV_RXCHAR not emitted or catched while moving window

[Tony Rietwyk]

Hi Riccardo, 

Is this running on Windows?  I seem to remember that the timers had the same
problem - the events don't get delivered while the window is in resize mode.
I never found a fix or workaround for this, and had to implement my own
timers in a separate thread looping on sleep.  

Hope that helps, 

Tony. 


> Sent: Friday, 16 March 2012 12:45 AM
> 
> Again: use the readyRead signal ?
> 
> http://qt-project.org/doc/qt-4.8/qiodevice.html#readyRead
> 
> On 15 mars 2012, at 14:27, Riccardo Roasio wrote:
> 
> > Sorry..so what you think i have do do?
> >
> >
> >
> > Il 15 marzo 2012 14:26, Samuel Gaist <samuel.gaist at edeltech.ch> ha
scritto:
> >> I must say, I don't understand your use of QSerialPort.
> >>
> >> You are waiting on data coming from the serial port, aren't you ?
> >> So, why not just connect to the readyRead signal ?
> >>
> >> On 15 mars 2012, at 14:07, Riccardo Roasio wrote:
> >>
> >>> the serial port class is this one:
> >>>
> >>>
> http://www.google.it/url?sa=t&rct=j&q=&esrc=s&source=web&cd=1&ved=
> 0C
> >>> CwQFjAA&url=http%3A%2F%2Fgitorious.org%2Finbiza-
> labs%2Fqserialport&e
> >>> i=8OhhT_vNGY6KhQeg6tieCA&usg=AFQjCNF7vwKcu_dJz8y-
> QE6ziYhoPe4uNw&sig2
> >>> =adTbs9FuJPYZhrNXtnfALg
> >>>
> >>> it expect a EV_RXCHAR event on receiving something on the serial
> >>> port so it reimplements the QWidget event function:
> >>>
> >>> bool WinSerialPortEngine::event(QEvent *e) {
> >>> //   qDebug()<<"event "<<e<<" "<<e->type();
> >>>    bool ret = false;
> >>>    if (e->type() == QEvent::WinEventAct) {
> >>>        if (EV_ERR & m_currentMask & m_setMask) {
> >>>            m_parent->canErrorNotification();
> >>>            ret = true;
> >>>        }
> >>>
> >>>        if (EV_RXCHAR & m_currentMask & m_setMask)
> >>>        {
> >>>            m_parent->canReadNotification();
> >>>            ret = true;
> >>>        }
> >>>
> >>>        //FIXME: This is why it does not work?
> >>>        if (EV_TXEMPTY & m_currentMask & m_setMask) {
> >>>            m_parent->canWriteNotification();
> >>>            ret = true;
> >>>        }
> >>>    }
> >>>    else
> >>>    {
> >>>         ret = QWinEventNotifier::event(e);
> >>>    }
> >>>
> >>>    ::WaitCommEvent(m_descriptor, &m_currentMask, &m_ov);
> >>>    return ret;
> >>> }
> >>>
> >>> the problem is that while receiving events like the
> >>> QEvent::NonClientAreaMouseButtonPres on the gui thread it stop
> >>> receivng EV_RXCHAR event on the serial port class
> >>>
> >>>
> >>>
> >>> Il 15 marzo 2012 12:53, Samuel Gaist <samuel.gaist at edeltech.ch> ha
> scritto:
> >>>>
> >>>> On 15 mars 2012, at 12:37, Riccardo Roasio wrote:
> >>>>
> >>>>> Hi,
> >>>>>
> >>>>> i have a program with :
> >>>>>
> >>>>> - a main thread
> >>>>> - a serial manager thread using Qserialport
> >>>>>
> >>>>> i noticed that if i move the main gui the EV_RXCHAR event is not
> >>>>> fired or cached...
> >>>>>
> >>>>> what's wrong?
> >>>>>
> >>>>> thanks,
> >>>>> Riccardo
> >>>>> _______________________________________________
> >>>>> Interest mailing list
> >>>>> Interest at qt-project.org
> >>>>> http://lists.qt-project.org/mailman/listinfo/interest
> >>>>
> >>>> Hi,
> >>>>
> >>>> With so few information, we won't be really be able to help you.
> >>>> But here is a few questions:
> >>>> - How is your serial manager thread implemented ? (My guess: run
> >>>> reimplementation)
> >>>> - Do you have signals slots directly connected ?
> >>>>
> >>>> Hope this helps
> >>>> Samuel
> >>>>
> >>>> PS:
> >>>> Did you also read this article ?
> >>>> http://labs.qt.nokia.com/2010/06/17/youre-doing-it-wrong/
> >>>>
> >>>> And there where a few discussions on the qt-nokia mailing list last
> >>>> year about threading, you might want to look for them
> >>>>
> >>