+1.
I am mostly a lurker on this list, but I have asked a few questions and
learned a bunch of things. I would like to remain subscribed to it; it
is useful to me. But Roland is destroying the list. As Benjamin writes
below, at least some of the issues Roland raises are valid, and the
larg
Hi all. I have a Qt Widgets based app that runs on both macOS and Linux. So
far, it has only had one kind of “main window”, with a menu bar of its own. On
macOS I want the app to look native, with a global menu bar at the top of the
screen; on Linux, at least on the Linux variants I’m familia
Hi all. Just wondering whether there is any plan for any Qt 5.x release to
support macOS 11. At present, Qt 5.15 supports only through macOS 10.15
(https://doc.qt.io/qt-5/macos.html#supported-versions), as far as I can tell,
and my app built on macOS 10.15 apparently does not run properly on m
> Hi Ben,
Hi Tony,
Lot’s of questions here! Let’s see:
> There may indeed be an issue with fonts being tied to having at least one
> window present, which causes you grief when you delete the main window.
>
> Have you tried the suggestion from your other thread to just hide the main
> window
. Oh well.
Cheers,
-B.
Benjamin C. Haller
Messer Lab
Cornell University
> On Sep 23, 2020, at 12:40 PM, Ben Haller via Interest
> wrote:
>
> Sorry for all the emails; this is proving to be quite a difficult problem and
> I’m really hoping somebody has insight into it.
>
I’m stuck.
Cheers,
-B.
Benjamin C. Haller
Messer Lab
Cornell University
> On Sep 23, 2020, at 12:04 PM, Ben Haller via Interest
> wrote:
>
> Hi all. I’m starting a new thread since the focal question has completely
> changed. I’ve tracked down the cause of the crash that
sly there’s something about
memory management in Qt that I don’t understand, because I don’t see anything
wrong with this code! :-> Thanks for any help.
Cheers,
-B.
Benjamin C. Haller
Messer Lab
Cornell University
> On Sep 23, 2020, at 7:50 AM, Ben Haller via Interest
> wrote:
>
. :->
Cheers,
-B.
Benjamin C. Haller
Messer Lab
Cornell University
> On Sep 23, 2020, at 8:41 AM, Giuseppe D'Angelo via Interest
> wrote:
>
> Il 23/09/20 14:08, Ben Haller via Interest ha scritto:
>> Thanks for the suggestion. However, this problem is only on macOS
“preliminary”
support will work on it, I guess. But if there is another debugging technique
that doesn’t depend on Valgrind, it would make my life much easier...)
Cheers,
-B.
Benjamin C. Haller
Messer Lab
Cornell University
> On Sep 23, 2020, at 8:08 AM, Ben Haller via Interest
>
gt; Valgrind.
>
>> -Original Message-
>> From: Interest On Behalf Of Ben Haller via
>> Interest
>> Sent: Wednesday, September 23, 2020 7:50 AM
>> To: qt qt
>> Subject: [Interest] Debugging a double dealloc
>>
>> [External]
>>
>
Hi all. I’m trying to figure out what appears to be a double dealloc problem
of some sort. I’m sure the actual bug is in my code (I’m trying to get a
window with complex subsidiary windows, etc., to disassemble and free the
things it owns, without freeing itself), but the backtrace at the poin
You are a good guesser, Sean!
I tried commenting out the call I make to:
setAttribute(Qt::WA_DeleteOnClose);
when I’m setting up my main windows. With that commented out, things work
fine. I’m leaking the document window and everything it owns, of course, so
that isn’t great; but it work
A little followup; sorry, this should have been in my first email. It would
probably be useful to show more code; here’s the method where I create the
global menu bar:
void QtSLiMAppDelegate::makeGlobalMenuBar(void)
{
#ifdef __APPLE__
if (!windowlessMenuBar)
{
windowlessMenuBa
Hi all. I’m on Qt 5.14.2, with a Qt Widgets based app that runs on both macOS
and Linux. I’m having trouble getting my menu bar to work.
So that things work smoothly on Linux platforms where there is a menu bar in
each main window, I have a menu bar in the .ui file that contains my main
windo
Why not just replace ‘&’ with ‘&&’ in the string the user inputs, before
setting it as the name on the tab?
Cheers,
-B.
Benjamin C. Haller
Messer Lab
Cornell University
> On Jun 9, 2020, at 11:39 AM, Murphy, Sean wrote:
>
> In our application, we have a QTabWidget. We allow the users to rena
Hi Alex. Do you have the “deployment target” set to 10.10, not 10.14, in your
project? In Xcode this is in the project settings; in Qt Creator it’s a
setting in the .pro file. You can’t set it to be any earlier than the Qt
version you are running against, however, or precisely this sort of th
gt; wrote:
>
> On Wednesday, 29 April 2020 18:57:24 PDT Ben Haller via Interest wrote:
>> Aha! And I figured out that the order in which I declare the dependencies
>> in my .pro file determines the order in which those dependencies appear in
>> the link command. I fixed t
Hi Thiago,
> On Apr 29, 2020, at 8:48 PM, Thiago Macieira
> wrote:
>
> On Wednesday, 29 April 2020 15:16:49 PDT Ben Haller via Interest wrote:
>> -ltskit -lQt5OpenGL -lQt5Widgets -lQt5Gui -lQt5Core -lGL -lpthread
>>
>> And here’s the beginning of the link err
Hi folks. I’ve got a subdirs-type Qt Widgets project that lives here:
https://github.com/MesserLab/SLiM/tree/qtslim
(Note that’s the qtslim branch of a project named SLiM; the Qt stuff is all on
the branch until I get it completely working.)
I build it with qmake and then make, with no further
> On Apr 22, 2020, at 11:19 AM, Thiago Macieira
> wrote:
>
> On Tuesday, 21 April 2020 17:09:45 PDT Ben Haller via Interest wrote:
>> Unfortunately, I’m on macOS 10.15.3 and Valgrind is not there yet (I think
>> at present they have “preliminary” support for macOS 10.
> On Apr 22, 2020, at 11:17 AM, Thiago Macieira
> wrote:
>
> On Tuesday, 21 April 2020 16:44:19 PDT Ben Haller via Interest wrote:
>>connect(qApp, &QApplication::focusChanged, [this]() {
>> updateUIEnabling(); });
>
> Your object probably outlived QAppli
> On Apr 21, 2020, at 7:51 PM, Giuseppe D'Angelo via Interest
> wrote:
>
> On 4/22/20 1:44 AM, Ben Haller via Interest wrote:
>> Hi folks. I’m seeing something weird that I don’t understand. I have a
>> connection defined for the main window of my Qt Widgets app,
[ I realized I ought to supply the crash backtrace; I have appended it below my
signature. ]
Hi folks. I’m seeing something weird that I don’t understand. I have a
connection defined for the main window of my Qt Widgets app, like so:
connect(qApp, &QApplication::focusChanged, [this]() { up
Hi folks. I’m seeing something weird that I don’t understand. I have a
connection defined for the main window of my Qt Widgets app, like so:
connect(qApp, &QApplication::focusChanged, [this]() { updateUIEnabling();
});
I’m seeing a 100% reproducible crash as a result of this. When the
f
Well, it’s the first time I’ve looked at a sample from a Qt app, so I don’t
really know what’s typical, but I do see that the app is running with several
threads and more than one is sitting in a function named qt_safe_poll(). I
wonder if there could be some kind of thread deadlock issue, or re
I’m running Qt Creator 4.11.2 on macOS 10.15.4 without any problems with hangs.
Normally one can sample a process to see what it’s doing, like:
sample “Qt Creator” 10
in Terminal, but if your whole machine is hung maybe that won’t work. Still,
it might be worth a try starting a sample before
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