Me no worky on MAC. Rather drive a truck for a living than develop
applications for Apple junk. Thankfully are now a dead platform,
relegated to the status of 5 1/4 floppy disks and 8-track tape players
and other once trendy products people wizzed away far too much money on
only to find them totally obsolete a couple of years later.
General consumption financial analysts lump them in with the 5-decade
failures.
https://www.marketwatch.com/story/amazon-apple-google-and-facebook-will-all-go-away-within-50-years-says-author-2017-10-17
Friends from my stock exchange trading floor systems days don't give
Apple a decade. The more pessimistic of the crew gives them less than 7
years before a liquidation faster and more ugly than Sears. Apple has
been successful at marketing electronic Pet Rocks
https://en.wikipedia.org/wiki/Pet_Rock
to consumers, but, the Pet Rock phase of life is over for humans once again.
On 1/5/2019 4:00 AM, interest-requ...@qt-project.org wrote:
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Today's Topics:
1. Re: Interest Digest, Vol 88, Issue 2 (Konstantin Shegunov)
----------------------------------------------------------------------
Message: 1
Date: Sat, 5 Jan 2019 03:57:29 +0200
From: Konstantin Shegunov <kshegu...@gmail.com>
To: Roland Hughes <rol...@logikalsolutions.com>
Cc: Interests Qt <interest@qt-project.org>
Subject: Re: [Interest] Interest Digest, Vol 88, Issue 2
Message-ID:
<caaz9bhvydqoo4o9e-o09kf4mhbcpufuoezvbmmbkk9h_k+e...@mail.gmail.com>
Content-Type: text/plain; charset="utf-8"
On Thu, Jan 3, 2019 at 4:17 PM Roland Hughes <rol...@logikalsolutions.com>
wrote:
On 1/3/2019 4:00 AM, Konstantin Shegunov wrote:
Yes QApplication destructor is invoked last..Does it makes sense to use
deleteLater() in the widget destructors instead of existing delete if it
could be cleaned up as part of qApp-quit()?
Your example code clearly shows otherwise. You have a QObject that's
created before and destroyed after the application object.
Wow!
Perhaps a better question would be, "How is it that doesn't fault today?"
Just wondering if the test compilation "worked" due to luck of the draw.
I don't know, I'm not intimately familiar with all the internals. QObjects,
I think, rely/relied on a global state that's initialized in
QCoreApplication. What I can say for sure is that thread information is
initialized by the application object. Just for illustration purposes, this
is also the reason why you can't run a QThread and have the application
object in its QThread::run override. The thread object is going to set up
the global thread info and then you're going to get weirdness - warnings
such as "Not creating the application object in the main/GUI thread".
Possibly segfaults at exit. If you actually need to do such stuff you
really need to spin a system thread (std::thread, pthread, w/e) and then
create the application object (besides issues you have with the event loop
integration on osx).
So, even if it worked before, it had been wrong all along, so it should be
fixed anyway.
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