IIRC the list is stored in the event list, and it will go over each one.. Its not terribly expensive but isn't free either.
The only time I every call deleteLater is when I have to delete something, AND the function I am in, is in the middle of the event loop, AND the object will be used again, ie QEvent flows Scott -----Original Message----- From: interest-bounces+scott.bloom=onshorecs....@qt-project.org [mailto:interest-bounces+scott.bloom=onshorecs....@qt-project.org] On Behalf Of Nikos Chantziaras Sent: Saturday, August 18, 2012 1:44 PM To: interest@qt-project.org Subject: Re: [Interest] Double destruction of Qt objects in Qt example code? On 18/08/12 23:21, André Pönitz wrote: > On Sat, Aug 18, 2012 at 09:29:53PM +0300, Nikos Chantziaras wrote: >> [...] >> On a similar note, don't delete QObject instances manually. Call >> their >> deleteLater() member function instead. > > There are only rare cases where deleteLater is needed. > Otherwise, using it is unneeded overhead. How much of an overhead? I think it's preferable to trade a tiny bit of overhead for event propagation safety. The event loop might not be finished with the object at the time of deletion. _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest _______________________________________________ Interest mailing list Interest@qt-project.org http://lists.qt-project.org/mailman/listinfo/interest
