not completely true -- slots are
guaranteed to be called in the order they have been connected to the
signal.
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with involve a network?
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://qt-project.org/wiki/QThreads_general_usage
http://labs.qt.nokia.com/2006/12/04/threading-without-the-headache/
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of these notifications.
That's the proper way. But note that you need
QGraphicsItem::ItemSendsGeometryChanges set for it to work.
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a border visible. Any help would be
appreciated, thanks Sujan
I think you're looking for QFrame?
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those nice extra features. Otherwise you
don't. But you can still use Qt 5 without them :)
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On 15 June 2012 14:35, Sven Anderson sven.ander...@snom.com wrote:
On 15.06.2012 14:58, Thiago Macieira wrote:
Any one care to give me the Standard Library equivalent of:
QString::number(x)
string to_string(int) ?
No go, C++11 only.
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On 15 June 2012 15:10, Rui Maciel rui.mac...@gmail.com wrote:
On 06/15/2012 02:50 PM, Giuseppe D'Angelo wrote:
string to_string(int) ?
No go, C++11 only.
But it's standard and it is C++.
But (I think) the point was: what should have we used for the last
10-15 years of QString?
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widgets transparent for mouse events
(Qt::WA_TransparentForMouseEvents) come to mind.
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* Yes, of course, if you manage to control event dispatching then 1b
collapses onto 2, but that's not really how QObjects are meant to be
used, is it?
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On 23 August 2012 12:21, Marc Mutz marc.m...@kdab.com wrote:
Hi Giuseppe,
I think you got the categories wrong.
Sorry, I rushed out the email and in the end it turned to be not
precise about what I was referring to with safe.
On Thursday August 23 2012, Giuseppe D'Angelo wrote:
Now we have
,
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the QWidget pixel data directly.
So how do i do that?
With a custom QPaintEngine/QPaintDevice combination, and a custom
graphics system that uses it.
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*
introduced: MMIO, changing values from signal handlers (together with
a sig_atomic_t), or saving the value of automatic variables across a
setjmp/longjmp? Of course now it's a reliable solution to all three
problems...
(Yes, threads never entered the picture.)
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553e216d891177ee0c2cea70bbd7f21103fc7795
a2ab156872195e0398f4cfe1992b526aa1315c76
in qtbase.
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QMatrix4x4-related
functions are deprecated; the class itself is not. About QMatrix: use
QTransform instead, as stated in QMatrix docs.
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On 15 January 2013 09:50, 程梁 devb...@outlook.com wrote:
Could you tell me if I could append custom data to request? If I could, how
should I do it, if not, what should I do?
You can install a custom QNetworkAccessManager on the QWebPage and do
any kind of modification you need.
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On 20 January 2013 17:29, Scott Aron Bloom scott.bl...@onshorecs.com wrote:
Honestly, if qNAM had the ability to set the timeout, I would have no problem
with a blocking call..
Start a QTimer and abort the QNetworkReply if it fires before
finished(), and viceversa.
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both IPv4
and IPv6 on a dual-stack machine.
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as a \W.
But there's no such transition in your string: the \b is between the
beginning (\W) and the leading backslash (\W again). Therefore, it will
not match.
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On 30 March 2013 10:54, Christoph Kurz c.k...@melph.de wrote:
Any ideas would be appreciated.
Valgrind your application?
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, V8 and
WebKit, and they come with their own build requirements.
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and me) are
not using Qt mainly for desktop applications...
You still need Perl for building qtbase. Once you've got qtbase
compiled, just compile the other modules you're interested in (qmake
make).
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on one machine and automatically
deploy it on all of the 14,000?)
What if tomorrow the developers will need package FooBar? Will that
block the work of 14,000 developers because the sysadmins cannot
install it on their machines?
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with all it's restrictions
Note that Perl is needed to *build* Qt. End-users only require the
compiled libs (and the various runtime dependencies: plugins, etc.)
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parse). This is a C++ problem, not a Qt one.
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: put Q_OBJECT in each and every QObject subclass.
And why can I cast a VideoPlayer to a PlayerBase but not in the other
direction?
What do you mean? You can always cast for free to a base*, but you
need an explicit cast to go towards a derived class.
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*unless you're
for
http://qt.gitorious.org/qt/qtdeclarative/commit/5c72255
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that a double click will print Click and Double Click).
Hope this helps,
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are on the top of the stack.
Hope this helps,
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://en.wikipedia.org/wiki/Visual_C%2B%2B_name_mangling#Function_2
This will cause a linker error (you'd be looking for a symbol with a
different name in the shared library).
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and I have much bigger structures in my app, so the memory size should not
be responsible for the slowdown.
Do you have a SSCCE [1] that clearly shows the issue?
[1] http://sscce.org/
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operator. C++ does not define the order of evaluating
its parameters. That means that either lineData.takeFirst() can be
called before evaluating the inner operator, or vice-versa. Depending
on what the compiler chooses to do, you'll have a different result.
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overloaded function type means
that error() has overloads, and you need to select the right one:
connect(socket,
static_castvoid
(QTcpSocket::*)(QAbstractSocket::SocketError)(QTcpSocket::error),
this,
Class::method);
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could be added to this page here,
http://qt-project.org/doc/qt-5.1/qtcore/signalsandslots.html ?
There are a couple of patches to improve the situation, for instance
https://codereview.qt-project.org/#change,67348
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the parent
children list. So when the QObject destructor (for the QObject
sub-object of QtSoapHttpTransport), it won't double delete anything.
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? Is
there some assumption here that such small text files aren't compressed?
I think the example is just doing it wrong, it should instead load the
resource file contents using QFile into two QByteArrays into the ctor
and then return the QByteArrays' contents there.
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of dropping them altogether it would be better to
turn them into JIRA reports so they can be evaluated and merged in the
docs, if possible (then we can think of ditch or redesign the entire
feature).
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constructor?
Anyhow: you can try
static_castQLineEditPrivate *(QWidgetPrivate::get(this));
HTH,
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constructor?
Anyhow: you can try
static_castQLineEditPrivate *(QWidgetPrivate::get(this));
HTH,
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been explictly marked as
mergeable via madvise? Why would the dynamic linker use such flag on
the libraries it maps into memory? (It would be pointless in the vast
majority of the cases except in OP's scenario?)
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On 18 March 2014 11:28, Mandeep Sandhu mandeepsandhu@gmail.com wrote:
Just to be clear, you guys are talking about KSM (kernel samepage
merging) right?
Uhm, yes, I was. I failed the acronym...
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combination of
GPU / drivers are you using?
Hope this helps,
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On 22 April 2014 03:12, Scott Aron Bloom scott.bl...@onshorecs.com wrote:
Agreed.. but it would be even easier... if abort was a slot :)
It is a slot in Qt 5. Besides, you can always connect to a custom slot
which invokes abort()...
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to QtCore's linker command line, and examine the map file using a
script. Then proceed to trim.
Hope this helped,
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ANGLE and llvmpipe as
workarounds.
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/updates commands.
HTH,
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On 5 June 2014 11:16, Gunnar Sletta gunnar.sle...@jolla.com wrote:
It is new API so it goes to the next minor version of Qt, 5.4 in this case.
Please add the \since... :-)
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problem is that you have to perform the split yourself because
you have a single string -- the environment variable.
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Hello,
Il 19/06/2014 12:23, Giuseppe D'Angelo ha scritto:
http://www.qtdeveloperdays.com/call-papers-information
The deadlines are July 24th for Europe and August 15th for US.
There's an update: the Call for Papers' deadline for the Europe event
has been extended to July 31st at midnight
getting a
Compatibility profile.
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On 5 August 2014 23:22, Phil Weinstein ph...@indra.com wrote:
Short of that, are
there any well supported third-party Qt packages for doing this?
How about just feeding the sequence of images to an external encoder
like ffmpeg/libav or mencoder?
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simply too many people were relying on that behaviour (which was
implemented, just not documented) to think to modify it at any time.
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!
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go there and disrupt those pages.
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Most of the value classes are implicitly shared:
http://qt-project.org/doc/qt-5/implicit-sharing.html
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...)
Contributions are welcome, anyhow.
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.cpp files), or the linker (which would possibly mean that moc
picked up those member functions and it's referencing them, but their
symbols are not present in any object file)...
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Il 04/02/2015 11:18, Reinhardt Behm ha scritto:
MOC does not understand and therefor does not respect macros and #ifdef.
I'm sorry to be blunt, but this is simply false. moc has had a full C++
preprocessor since Qt 5.0.
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...
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it on
the usual channels:
https://bugreports.qt.io
* Project Qt
* Component Documentation
Cheers,
(*) and this kind of low hanging fruits^Wbugs are perfect to getting
started at developing Qt!
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basis
if in reality it ought to be activated??
They're never defined, so junk, but they can't just be removed. One
should check what they're actually wrapping -- if they were meant to
be Q_OS_*, or perhaps exposing functionality that has been lost when
porting to QPA, etc.
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(). (Fundamentally that shared part
behind QList has no code dealing with shrinking.) I've got a WIP on
gerrit, if only I get the time to work on it again...
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)
821 return -1;
Note in particular that stream reads an unsigned 32 bit int into
offset, but then skipRawData silently converts to signed... (but it may
be totally unrelated with the problem here, which perhaps results from
bad EXIF parsing on Qt side)
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QPDFWriter's ctor
that takes a QIODevice? I would be really annoyed if closing the painter
would close the device on my back. Annoyed to the point to call it a Qt bug.
2) Have you tried painting the widget on a QPicture, then replaying the
QPicture on the PDF?
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does not work on Windows XP
So for pure-widgets applications it might make more sense to use the
Desktop OpenGL build of Qt. YMMV :)
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HTH,
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On 3 March 2015 at 00:53, Thiago Macieira thiago.macie...@intel.com wrote:
GLX implies desktop GL
And, Qt supports creating GLES contextes on GLX, if the right
extensions are available.
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instead, loading it on a
texture (QOpenGLTexture) and then drawing a quad.
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)
Is there a qmake or some way, that in the setup scripts to my build, I can
confirm the version I am running against?
In qmake see $$QT_ARCH, in your C++ file you can use QT_POINTER_SIZE.
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);
QPainter p(image);
p.drawText(); /* etc.etc. */
p.end();
QOpenGLTexture *texture = new QOpenGLTexture(image);
/* bind, use it */
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can use
those functions.
(Note that Qt has also another mechanism for that -- Q_PRIVATE_SLOT --
but that doesn't solve the problem, it simply allows to move a slot
declaration/definition into the pimpl).
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/qtalgorithms.html#qt-and-the-stl-algorithms also
contains some end-user information.
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into QOpenGLWidget (as it's
not even remotely its role), how about starting working on it in a
standalone Qt addon?
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, Giuseppe D'Angelo dange...@gmail.com wrote:
On 1 April 2015 at 19:11, Preet prismatic.proj...@gmail.com wrote:
I would have expected two invocations of onPerimeterChanged, but it gets
called only once. The QML engine avoids the redundant change and I'm curious
as to how this is done.
http
On 10 April 2015 at 22:33, Felix morack felixo...@gmail.com wrote:
So any plans? Any objections?
No plans and no objections, I'd say...
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and nntp.qt.nokia.com ? Is
there still a Qt-specific nntp server that provides access to the various Qt
mailing lists?
Both of those domains are dead :(
Or can the interest ML be subscribed to gmane?
It's there:
nntp://news.gmane.org/gmane.comp.lib.qt.general
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of these
so my application can work?
What types are deprecated? GLU types or QGLWidget?
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the element hierarchy
as a tree, it would have been solved in seconds.
You're looking for GammaRay:
https://github.com/KDAB/GammaRay/
See for instance this blog post:
http://www.kdab.com/analysing-qtquick-apps-gammaray-button-gone/
Hope this helps,
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of problems when
ANGLE gets used on XP (from rendering errors to plain random crashes). I
*think* upstream doesn't even bother of supporting XP any longer, but
maybe someone else knows more...
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ones YMMV, Intel's
ones just don't work on XP -- period.
Note also that since you're on XP you can't use ANGLE as a Direct3D
fallback.
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for that.
Hope this helps,
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to?) do it:
https://github.com/KDAB/GammaRay/tree/master/hooking
For good news, starting from Qt 5.4 it's extremely easier to install
your own hooks:
https://codereview.qt-project.org/#/c/83272/
Hope this helps,
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Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Software Engineer
KDAB (UK) Ltd
On Thu, Nov 12, 2015 at 9:14 PM, Diego Iastrubni <diegoi...@gmail.com> wrote:
> So... the official statement from Qt is that elliptic curves is a ... "safe"
> encryption to be used in the wild...?
Where did you get this quote from?
On Mon, Oct 19, 2015 at 2:21 PM, Rafael Machado
<rafaelrodrigues.mach...@gmail.com> wrote:
>
> Any idea on how to do this work as I expect ?
As the help says, it's -no-feature-nameofthefeature, so -no-feature-columnview.
HTH,
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Giuse
On Mon, Oct 19, 2015 at 3:31 PM, Rafael Machado
<rafaelrodrigues.mach...@gmail.com> wrote:
> Does anyone know how to do it ?
-no-feature-columnview should be the right one... are you using Windows?
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Giuseppe D'Angelo
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ot recognize
the -no-feature switch. Either pass -D QT_NO_FOOBAR manually or use
qconfig as described here:
http://doc.qt.io/qt-5/configure-options.html
HTH,
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Giuseppe D'Angelo
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of
escape for paths). Creator just runs qmake + make, which then explodes;
it doesn't look to me Creator is to blame.
HTH,
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Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Software Engineer
KDAB (UK) Ltd., a KDAB Group company | Tel: UK +44-1625-809908
KDAB - The Qt Experts
smime.p7s
Descript
d strtoull(). Is there a simple way of
doing this in Qt?
Are you talking about converting the decimal representation using the C
locale? toULongLong().
HTH,
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Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Software Engineer
KDAB (UK) Ltd., a KDAB Group company | Tel: UK +44-1625-809908
KDAB - The
ding, otherwise it seems that new
> options like “debug” not taking effect. Is there an easy way to tell qt not
> to take the deployed headers?
Can you avoid installing customly compiled Qt in default system paths?
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Giuseppe D'Angelo
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Il 18/09/2015 22:23, Igor Mironchik ha scritto:
If in some method create QWidget and invoke show() on it when this
widget will be shown? Immediately or only after finish of method from
within show() was invoked?
Neither: some time after you return to the event loop.
Cheers,
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Giuseppe
hing that would help
> me pinpoint the culprit?
Run with QT_FATAL_WARNINGS=1? Add a breakpoint on the qWarning
statement in question inside Qt?
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u have a property of
type QString (string in QML) and you're assigning a value of type QUrl
(url) to it?
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again at
any time.
HTH,
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Giuseppe D'Angelo | giuseppe.dang...@kdab.com | Software Engineer
KDAB (UK) Ltd., a KDAB Group company | Tel: UK +44-1625-809908
KDAB - The Qt Experts
smime.p7s
Description: Firma crittografica S/MIME
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istake in Qt.
There's no useful way of managing sockets through the base class API.
"Static polymorphism" would've fitted just as well.
My 2 c,
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Giuseppe D'Angelo
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