[wxPython-users] Re: Re: wxTimer never times out sometimes

[Robin Dunn]

Jeffrey Barish wrote:
> Jeffrey Barish wrote:
> 
>>> Have you tried .Stop() then .Start()?
>>>
>>> - Josiah
>> I did not try it because the documentation says that "If the timer was
>> already running, it will be stopped by this method [start] before
>> restarting it."  However, if you think that it might make a difference, I
>> will try it.  At this point, I have nothing else to try, so any suggestion
>> is welcome.
> 
> It's official: This sensible suggestion did not fix the problem.
> 
> As this is the only serious problem I have remaining in my application and
> as I am stumped, I thought that a peek at some of the code might trigger
> additional thoughts.
> 
> The function that I use to trigger the timer is this:
> 
>     def _startTimer(self):
>         '''Utility function for starting the timer and activating the
>         indicator.'''
>         self.timer.Start(10000, True)
>         self.ind_p.setInd()
> 
> The timeout event is bound to this:
> 
>     def doTimer(self, event):
>         '''The timer timed out.'''
>         print 'Timeout'
>         self.ind_p.clrInd()
> 
> The _startTimer utility routine is the only place where the timer Start is
> called.  What I observe is that the indicator goes on but it never goes off
> and I never get a message from the print statement.  The fact that the
> indicator went on tells me that the timer must have started, yet I never
> make it to the event handler.  The binding never changes.  It is created
> with this:
> 
>         self.Bind(wx.EVT_TIMER, self.doTimer, self.timer)
> 
> where self is the main panel.  
> 
> Also, once the timer fails once, I can't find any way to trigger it again. 
> I keep thinking that it will trigger if I do the things that normally
> trigger it and when it times out it will belatedly clear the indicator and
> print the message.  However, nothing I do has this effect.
> 
> I just stuck
> 
>             if self.timer.IsRunning():
>                 print 'Started timer'
>             else:
>                 print 'Failed to start timer'
> 
> at the end of _startTimer.  It will be interesting to see whether the timer
> thinks that it is running when the indicator fails to clear.
> 
> I don't have event.Skip() at the end of doTimer.  Could that be the problem? 

It shouldn't cause any problems.  The default handler doesn't do anything.

You didn't show the code that creates the timer object.

-- 
Robin Dunn
Software Craftsman
http://wxPython.org  Java give you jitters?  Relax with wxPython!