[PySide] Simple app using a timer to update crahes when maximized
Paul O. Seidon
p.oseidon at datec.at
Mon Apr 13 17:23:32 CEST 2015
Strange, had to add the layoutToBeChanged signal in the timer callback:
def _on_Qt_TIMEOUT_timer_( self):
self.layoutAboutToBeChanged.emit()
self.layoutChanged.emit()
return
instead of just
def _on_Qt_TIMEOUT_timer_( self):
self.layoutChanged.emit()
return
Cheers
Paul
Paul O. Seidon wrote:
> Dear PySiders,
>
>
> being a wxPython user for years I decided to have a look at Qt using
> PySide. A simple to-do manager containing to-dos that change their
> priority over time (depending on the distance of now to the due date)
> should be suited to get my feet wet.
>
> It uses QTableView, QSortFilterProxyModel and QAbstractTableModel.
>
> The QAbstractTableModel (actually the subclass) features a QTimer to
> recalculate the priorities of the to-dos. Here I do
>
> def _on_Qt_TIMEOUT_timer_( self):
> self.layoutChanged.emit()
> return
>
> to tell the view to redisplay the data.
>
> Everything works fine so far, but when I minimize, maximize, minimize,
> maximize, ... the GUI, then suddenly the app crashes upon maximizing the
> GUI. It does not so, if I don't start the QTimer. And, the smaller the
> timer interval the sooner it crashes.
>
> I guess there happens something in the QTableView when the GUI is max'ed
> that interferes with the slot called by self.layoutChanged.emit().
>
> I'm on Arch Linux, Python 2.7.9.
>
> Any idea?
>
>
> Kind regards
> Paul
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