Planned maintenance has been done but it did not solve the problem. So work will continue on this and a new time for trying updates will be announced asap.
Relating to attaching Debugger to Valgrind PID, when I launch qtcreator
./qtcreator
The following messages appear before launching
Analyze->Valgrind Memory Analyzer with GDB
Debug->Attach to Running Application
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
QStandardPaths: XDG_RUNTIME_DIR not set, defaulting to '/tmp/runtime-root'
QXcbShmImage: xcb_shm_attach() failed with error: 10 (BadAccess), sequence: 552, resource id: 311, major code: 130 (Unknown), minor code: 1
Hi,
What version of Qt are you using ?
What Linux distribution are you running ?
What versions of OpenSSL do you have installed ?
You are not connecting the error related signals anywhere, you should so you'll have more information about what is going wrong.
On a side note, there's no need to create your QNetworkRequest on the the heap as shown in the QNetworkAccessManager documentation.
@aha_1980 I will try compiling it myself since I'd like to stick with MinGW.
Just tried that but MinGW outputs the following:
0 [main] sh 1816 sync_with_child: child 12536(0x1E4) died before initializing with status code 0xC0000142
208 [main] sh 1816 sync_with_child: *** child state waiting for longjmp
/usr/bin/sh: fork: Resource temporarily unavailable
mingw32-make: *** [Makefile:55: mingw] Error 128
@Nathan-Miguel
Look, the "dots" aren't part of a file name, they are the . and the .. entries in the directory, The other two are filenames. You are choosing to print them out all touching each other (testlist.join("")). Clearly that has nothing to do with your "want to set to open a file inside the folder". You can access indvidual files via each element in entryList() or entryInfoList(), as you please.
@Nathan-Miguel Keep in mind that those stackoverflow solutions use recursion, which may result in (ironically) stack overflow with deeply nested directories. Also, if there's a lot of files QDir::entryList will return a large list, which might require large amount of memory.
A better solution might be using QDirIterator with QDirIterator::Subdirectories which uses resources only for one entry at a time.
Hi and welcome to the forums
I dont know Golang but the interface is the same so i would
check in func (m *CustomTableModel) data
that this test
if role != int(core.Qt__DisplayRole) {
return core.NewQVariant()
}
is not always returning an empty variant for each call.
also
case 0:
return core.NewQVariant12(item.firstName)
case 1:
return core.NewQVariant12(item.lastName)
does return a valid QVariant ?
i wondered why the empty one is
NewQVariant()
but with data its NewQVariant12 ?
@alekssandrap
Hello,
I found your topic because I am looking for a virtual keyboard for my PUQT5 application.
So, I found the problem of your error and this is my solution to solve it (maybe that can help some other people) :
In your pyqtSignal you have to pass an object :
sigKeyButtonClicked = pyqtSignal(object) #line 9
sigInputString = pyqtSignal(object) #line 32
sigKeyButtonClicked = pyqtSignal(object) #line 33
Then you have just to pass your key and your inputString in the signal emit :
self.sigKeyButtonClicked.emit(self._key) #line 20
self.sigInputString.emit("") #line111 in function Cancel in order to avoid an other error
Don't modify line 71 with lambda as @AlfredoC suggest because you won't be able to get the key pressed.
That's all :)
Hope that can help someone else.
Have a great day
@Nathan-Miguel said in Read a specific tag in xml:
PROGRAM DIRECTORY: E:\Git\Denoiser-Script\QML_C++\build-Denosier-Desktop_Qt_5_12_3_MSVC2017_64bit2-Debug\debug
XML DIRECTORY: E:\Git\Denoiser-Script\QML_C++\build-Denosier-Desktop_Qt_5_12_3_MSVC2017_64bit2-Debug\debug\sysinfo\system.xml
In your code extract you have hard coded the path and with you output it should be:
QString systeminfo::getCpuName()
{
QString rootDir = qApp->applicationDirPath(); // QDir::currentPath() != not application path
QString xmlDir = "/sysinfo/system.xml";
QDomDocument docxml;
QString test;
QFile xmlread;
xmlread.setFileName(rootDir+xmlDir);
test = "head";
if (xmlread.open(QIODevice::ReadOnly))
{
QXmlStreamReader reader(&xmlread);
if (docxml.setContent(&xmlread)){ //Open xml with success
test = "xml loaded with success";
//Read specifc tag xml
auto nodes = docxml.elementsByTagName("cpuname");
for(int i = 0; i < nodes.count(); i++)
{
QDomNode elm = nodes.at(i);
if(elm.isElement())
{
test = QStringLiteral("%1 = %2").arg(elm.toElement().tagName(), elm.toElement().text());
}
}
}
}
return test;
}
==> my output with this code and your XML document is:
Hi @semtexzv, and welcome!
@semtexzv said in Generating bindings for other languages:
...mainly utilize Rust language.
Have you seen the Rust-Qt project? https://github.com/rust-qt
could the shiboken generator used to generate bindings for other languages in custom format ?
I'll leave this question for someone else who has experience with Shiboken. But if you want to check yourself, this is a good place to start: https://blog.qt.io/blog/2018/05/31/write-python-bindings/
I just published a PyQt5 book:
Even Phil Thompson, the creator of PyQt, read it and says it's "very good". It saves you a lot of time when learning PyQt. It's the resource I wish I had had when I was getting started.
@SGaist sorry if I'm so late, I wasn't notified about your post.
I'm using PySide 1.2. I am working inside 3dsmax 2017 and I have to use what Autodesk provides me - I have no choice about this.
@Nathan-Miguel
As I said/suspevted:
You show us the code of your Qt application, which does not create the file, so it does not help.
Nowhere do you you show whatever code does create the file, so since we cannot see that we cannot advise what it is you need to do.
I wrote above:
Are you now talking about what the current directory will be for the main.exe you run from your Qt program (perhaps because it creates systeminfo.txt without specifying a path)??
but you didn't reply to that. If you want help, you'll need to provide information.
Guess that this is caused by the set flags.
I don't know.
Can I include that somehow as I know it optimizes the code more?
Fortran uses C-linkage so any linker should be able to manage it.
Note that fortran mandates decoration of the function names itself, because reasons. So if you have:
subroutine dummy()
end subroutine dummy
This is seen by the linker as if it was defined as void dummy_().
If you intend to call fortran from C, you must provide the proper declarations for the compiler in your C code, they can't be deduced automatically.
When I use either gfortran or ifort in my code and I'll try to do the cross compilation. Will the fortran part of the code run flawlessly on Mac or Linux?
As long as you configure the compiler properly, you can treat fortran code as any other C code, so it should work fine, yes.
Tangent:
gfortran, I believe, still transpiles the fortran source to C and then runs the C compiler on top of it. In the end why should anyone invest time into keeping a real compiler for a zombie language up to date ...
I'd recommend reading the Qt5 version: https://doc.qt.io/qt-5/signalsandslots.html
@GastonMelo You really should take the time to go through Qt's documentation. It's full of tutorials, getting started guides and it also explains all the core concepts provided within the framework.
Just to close this up. Although I posted this question here, to the the PyQt mailing list and on stackoverflow, since I never got an actual answer as to how to write the derived class's constructor to accept the new positional argument while retaining all the existing overloads, in the end I have actually gone for a named argument:
class JListWidgetItem(QtWidgets.QListWidgetItem):
def __init__(self, *args, value: typing.Any=None, **kwargs):
super().__init__(*args, **kwargs)
# optional `value` member, passed in as `value=...`, stored in data(Qt.UserRole)
# this is a common thing to want, cf. `QComboBox.itemData()`
if value is not None:
self.setValue(value)
and caller goes e.g. JListWidgetItem("text", value=1). Some people have said this is the more "pythonic" way, who knows, but at least it works! Thanks to all.
The first thing you should do is to make Worker inherit both QObject and QRunnable. QObject must come first. Making it a separated class and calling signals on it is wrong. Signals should be emitted from within the class that defines them.
Another thing is that you don't set your worker to auto delete so you will end up eating lots of memories depending on how many times plot is called.
@Julian-Guarin-0 said in Web Assembly and decalarative-camera example.:
So I guess you are right. Does this confirm what you did see?
as i said, i didnt see anything ;)
But the configure clearly shows that you might only be possible to play sound files, i don't know if thats really true though for QtWebAssembly.
@aha_1980 said in Pyside QLineEdit entering data from right-to-left:
@Joel-Graff your example does not look like valid float number.
Do you need exponential format? I'm not sure, if QDoubleSpinbox provides that, otherwise it would be first choice for that task. For the line edit, you could use input masks or hook up an own 'correction function' on every key press.
It is, in fact, a valid float. It's called a "station" where 1 station = 100 feet. Thus 999 feet = 9.99 stations, which is commonly annotated 9+99. It's really just a length. The example I gave is actually the input mask I'm using - sorry for the confusion. The problem is, the input mask doesn't really fill out the required placeholders correctly. That is, if I create an input mask that reads:
'00009+99.00;_'
I would expect it to show
____0+00.__
as a default. Of course, it doesn't, and I admit, I don't really know much about input masks in Qt.
Since I can't rely on the input mask to control the data entry, forcing it to enter data from the right (and push the characters to the left) seems the next best option. It's a fairly common data entry technique - I've seen it even in very old terminal-based systems. I was hoping I didn't have to craft my own callback to manage it.
Thanks anyway. :)
