Thank you Scott for your answer, but unnless I didn'y understand you correctly,
it does not work : the timer singleshot is fired only after the loop ends.
Here is the modified radioProgDialog class of the program wherre I have added
th updateGui method and added the QTimer.singleShot(0, self.updateGui)
statement :
class radioProgDialog(QDialog, radioUi):
def __init__(self):
QDialog.__init__(self)
# Set up the user interface
self.setupUi(self)
self.connect(self.btnGo,SIGNAL("clicked()"),self.extraire)
#
def updateGui(self):
d=self.d
logText=u'téléchargement %02d/%02d/%d' % (d.day,d.month,d.year)
self.log.insertItem(0, QListWidgetItem(logText))
self.progressBar.setValue(self.progressBar.value() + 1)
print logText
def extraire(self):
url='http://www.radiofrance.fr/francevivace/prog/index.php?time=%u'
#
jours=[(int((now() + (j * oneDay)).ticks())) for j in range(0, 4)]
self.progressBar.setMaximum(len(jours))
self.progressBar.setValue(0)
print 'maxi', self.progressBar.maximum()
for jour in jours:
next_url=url % jour
#p=urllib.urlopen(next_url).read()
time.sleep(2)
#self.pagesEmissions.append(p)
self.d=DateFromTicks(jour)
QTimer.singleShot(0, self.updateGui)
print 'fini Vivace'
Le dimanche 27 janvier 2008, Scott Aron Bloom a écrit :
>
> You may find the following to work really well.. Of course I'm not a Python
> guy.. but here is how you could do it in C++...
>
> Rather then having a loop that goes over the jours, have a slot that adds 1
> time. And add to the class, the iterator...
>
> After all the jours are loaded, you call the following
>
> QTimer::singleShot( 0, this, SLOT( onHandleNextJour() ) )
>
> 0 means that the first time the event loop gets activated, the timer
> timesout, which is connected to the slot.
>
> In the slot onHandleNextJour you add the result to the tree, update the
> progress bar value, and then if your not at the end, call the singleShot
> method again.
>
>
> What this does, is allows the event queue (including paintEvents) to occur
> without any hacks...
>
> processEvents is a HACK... if used properly and safely it can be very
> effective... However, I have yet to find a processEvents I couldn't
> reorganize to use the singlShot with 0 time timeout..
>
> And of course the good news... it shouldn't add any code... just reorg a
> bit...
>
> While Andreas is correct, using a QThread is also a 100% valid solution... It
> is overkill for "simple" tasks... And frankly, what, you I or Andreas
> considers simple for the overkill will vary on each and every project... I
> already have a class I re-use quite a bit that is templatized to allow for a
> "loop and execute" type thread model... But I don't use it 100% of the time,
> because of the intrinsic complexities of threading.
>
> Scott
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