[PyQt] pausing and resuming QThread tasks

Scott Frankel frankel at circlesfx.com
Thu Apr 15 23:50:40 BST 2010

Hi Russell,

Seems good to me too ;)
I was curious to see how milliseconds could be germane to an  
indefinite pause.  Brilliant!


On Apr 15, 2010, at 1:24 PM, Russell Valentine wrote:

> What about just put this in your for loop. Then the pause/resume  
> button
> or whatever just toggles self.paused? That seems good to me.
> while(self.paused):
>  QThread.msleep(100)
> On 04/15/10 13:53, Scott Frankel wrote:
>> Hi all,
>> What's the best way to pause and resume processing in QThread  
>> objects?
>> I've built a small test app that sets up a Python os.walk() process  
>> that
>> I'd like to be able to pause and restart from where it left off.  The
>> documentation on QWaitCondition looks promising, though my app  
>> appears
>> to hang on this line (line 69):
>>    self.condition.wait(self.mutex)
>> Also, in testing for a paused job in my processing method (line 104),
>> does a waiting thread resume from where it left off?  Or do I need to
>> keep track of where it is myself and restart it from there?
>> Thanks in advance!
>> Scott

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