Re: PyQt processEvents not processing
by DarkBlue other posts by this author
Nov 7 2009 6:25PM messages near this date
Re: Cancelling a python thread (revisited...)
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How convert string '1e7' to an integer?
On Nov 8, 12:04Â am, David Boddie <da...@[...].uk> wrote:
> On Saturday 07 November 2009 05:12, DarkBlue wrote:
>
>
>
> > qt 4.5.3
> > pyqt 4.6.1
> > python 2.6
>
> > I have this QtTable widget which I want to refresh once about every 2
> > seconds with new data.
>
> > so I do :
>
> > Â def updateSchedule(self):
> > Â Â Â Â Â for j in range(0,10):
> > Â Â Â Â Â Â Â Â Â Â Â doUpdate()
> > Â Â Â Â Â Â Â Â Â Â Â QtCore.processEvents()
> > Â Â Â Â Â Â Â Â Â Â Â sleep(2)
>
> > Â unfortunately QT appears to wait until the for loop finishes
> > Â and only then paints the QtTable widget on the screen showing
> > Â only the latest updated result.
>
> It's difficult to know exactly why this is without more context. Calling
> the application's processEvents() method should give the user interface the
> chance to update itself, but perhaps you need to explicitly call update()
> on the QTableView or QTableWidget instance to ensure that it is refreshed.
>
> An alternative way to do this is to use a timer to update the table every
> two seconds.
>
> David
As per your suggestion I added a timer to the init part and now the
update works as expected , even without calls to processEvents.
self.myTimer = QtCore.QTimer(self)
QtCore.QObject.connect(self.myTimer,QtCore.SIGNAL("timeout()"),
self.doUpdate)
self.timerTime = 0
self.myTimer.start(2000)
Thanks
Db
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