Figured out my issue. I just needed to instantiate a QQmlDebuggingEnabler object. Calling QtQml.QQmlDebuggingEnabler() before instantiating my QApplication was enough.

@jsulm we make an installation file for our combined system, including multiple programs sharing some but not other resources. we use an nsi script to manage this. usually works fine. I just missed updating some of the .dll files.

@Ratzz
Thanks for your references.

@J.Hilk
It works ! THANKS :-)

@jsulm
I got this, thanks

My bad, I misread from where the signal came from.

@sergsmi privet !
вы можете использовать QML Shape type : https://doc.qt.io/qt-5.11/qml-qtquick-shapes-shape.html

@Devopia53
It works! , Thanks.

@MikhailG thank u so much sir
i will try.

Sorry for the late response!

If I use NMake Makefiles, I get the following Error:

-1: error: Failed to activate protocol version: "CMAKE_GENERATOR" is set but incompatible with configured generator value.

I changed to the MSVC 2017 toolchain and configured it the following way:

and I'm getting the same error as above.

thanks !! . I will look into both of them

It is boost library issue. Looks like you are not using the capture method of boost properly . Look at some examples of boost and fix your issue.

@Paul-Colby Thanks

i myself did something like this :)

QVariantMap json_map; const QJsonDocument doc = QJsonDocument::fromJson(output); qDebug().noquote() << doc; qDebug().noquote() << doc.array(); foreach (auto value, doc.array()) { qDebug().noquote() << value; qDebug().noquote() << value.toObject(); qDebug().noquote() << value.toObject().value("name"); json_map["name"] = value.toObject().value("name").toString(); json_map["installed"] = value.toObject().value("installed").toBool(); json_map["id"] = value.toObject().value("id").toString(); json_map["filename"] = value.toObject().value("filename").toString(); }

@noone Would this be of any help to you? https://forum.qt.io/topic/79730/no-build-step-for-android

It seems this guy had the same problem and solved it with adding gradle.

Usually that error has to do with missing ndk/sdk or the more likely ant/gradle. Try running the build or deploy on the command line and see if it gives you more information.

SOLUTION

with the help of @mrjj i found solution. It's just that instructions were not clear on tutorial

Steps

get the Qt creator source : git clone --recursive https://code.qt.io/qt-creator/qt-creator.git

set qmake version . your qmake version should be close to the qt version you are using . for e.g. if you are building for 5.10 your qmake should also use 5.10.

you can set qmake version by

sudo mv /usr/lib/x86_64-linux-gnu/qt-default/qtchooser/default.conf /usr/lib/x86_64-linux-gnu/qt-default/qtchooser/default.conf_orig sudo vim /usr/share/qtchooser/my_Qt_5.10.0_Desktop_gcc_x64.conf <Qt_dir>/5.10.0/gcc_64/bin <Qt_dir>/5.10.0/gcc_64/lib ln -s /usr/share/qtchooser/my_Qt_5.10.0_Destop_gcc_x64.conf /usr/lib/x86_64-linux-gnu/qt-default/qtchooser/default.conf

check qmake by qmake --version

mkdir qt-creator-build
cd qt-creator-build
qmake ../qt-creator/qtcreator.pro

4. ``` cd qt-creator-build make qmake_all make -j <number-of-cpu-cores+1>

wait for some time . it will take long time to build.

now you have both source and build of Qt creator . Now just follow the wizard and point the qt soruce and build locations

build and run

voila !! \0/

@mranger90 said in sqlite commands not working in qt:

Apparently you can not directly access an SQLite database from a resource. There are some discussions about this, but I cant find the links right now.

Indeed, Qt resources are compiled into the executable (or standalone binary file) which is read-only. Good catch! :-)

@jsulm said in Qt creator cannot successfully start app built with custom built qt bundle on windows:

@farta clone means here cloning from Qt repository (git clone)

Thank you.
I never clone it from Qt repository.

There is no straightforward API for this. I see several possibilities:

custom painting in QQuickPaintedItem custom painting in QQuickItem custom painting via GL shaders custom painting in QML Canvas a set of 4 animated Rectangle components, simulating the line. An ugly solution, but probably the easiest to do

Perhaps BorderImage component can be forced to do an animation like that, but I doubt it.

@nour.m

if you mean here:
http://freetexthost.com/l5wzgtntzb
than no, you did not make the changes @aha_1980 told you to do

SOURCES += main.cpp mainwindow.cpp my_polyhedron.cpp myqglwidget.cpp HEADERS += mainwindow.h My_CGAL_Config.h My_Face_base.h My_Halfedge_base.h my_polyhedron.h My_Vertex_base.h myqglwidget.h

still mising \ at the end of the line

also you are adding the widgets module twice. I'm not sure in what that will result, but you should remove one

QT += core gui QT += widgets //remove me DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x000000 greaterThan(QT_MAJOR_VERSION, 4): QT += widgets

@SGaist, could You provide an example please - fixed mylibrary.pro? Thanks!

Don't @ the moderators unless you have an issue requiring moderation.

Depending on the content of your line edit, you can use toLatin1() or toUtf8() rather than making these two conversions.

@dokif Do you see the plug-in in QtCreator under "Help/About Plugins..."?

@hassene
Hi and welcome
Is there a reason you simply dont use a layout ?
To make it autofollow the size of window ?
if you place a QLabel on a form ( mainwindow.ui) , right click somewhere on
empty form, and select Layout menu and select layout, the label will follow maniform.
https://doc.qt.io/qt-5.10/examples-layouts.html

@aha_1980
Hi. As I know, qtcreator doesn't handle well with auto keyword. I wish another trick, when I put cursor onto a auto variable's call, such as

auto v = SomeClass(); v.func();

Cursor is at func(). I wish to use shortcut key to show the option list, just as the result that I move cursor to Locator and input

:m func

then it will give me a list where func appears.

Is there such a shortcut ? If it exists, it may improve my code-reading greatly

@GregWilsonLindberg
I think that the g++ version is what is doing it. The old version of rasbian
is using g++ v4.9.2. The new version of rasbian is using g++ v6.3.0-18+.
For the old compiler we had had to add an "INCLUDEPATH =
/usr/include" line into the .pro file to get everything picked up
properly. For the new compiler (and the change from #include to #include_next
in cstdlib) that messes up.
I'm removing the INCLUDEPATH, (which seems to have been included as -isystem
instead of -I) and that is fixing the problem.

@jsulm yes, I tried launching it this way but it didn't resolve the issue - the error is same. Thanks for suggestion though :)

@JonB I think i won't be able to understand something more detailled and that answer the whole questions =)

Thanks a lot, you ma real expert ! ;D

For future reference, this approach only works if you know in advance all the roles you will use.
You can use KSelectionProxyModel instead if you need a proper general implementation

This is strange. could you try if this snippet works for you?

#include <QApplication> #include <QWidget> #include <QVBoxLayout> #include <QPushButton> #include <QTableWidget> #include <QLabel> int main(int argc, char *argv[]) { QApplication a(argc, argv); QWidget mainWid; QStringList changedValues; QVBoxLayout* mainLay=new QVBoxLayout(&mainWid); QTableWidget* tableWidget = new QTableWidget(&mainWid); QPushButton* button = new QPushButton(QStringLiteral("Display list"),&mainWid); QLabel* resultLabel = new QLabel(&mainWid); mainLay->addWidget(tableWidget); mainLay->addWidget(button ); mainLay->addWidget(resultLabel ); tableWidget->setColumnCount(1); tableWidget->setRowCount(5); for(int i=0;i<5;i++){ QTableWidgetItem* const newItem= new QTableWidgetItem; newItem->setData(Qt::EditRole,i); tableWidget->setItem(i,0,newItem); } QObject::connect(tableWidget,&QTableWidget::cellChanged,[&changedValues,tableWidget](int row, int column)->void{changedValues<<tableWidget->item(row,column)->text();}); QObject::connect(button ,&QPushButton::clicked,[&changedValues,resultLabel ]()->void{resultLabel->setText(changedValues.join(','));}); mainWid.show(); return a.exec(); }

Did you have any system update happening in between ?

@gizalp said in When resizes the entire window, the vertical layout (and thus its content) will stretch to fit it:

How can I enable these options?

click on the background. You probably also want to use "lay out in a grid" instead

Then even easier to use 1 QSqlQueryModel or QSqlTableModel

Sure you can, loop through the content of the left QTableWidget and update the content of the right table to match. But again, you seem to overcomplicate things.

Hi,

Are you aware of the implications of moving from MySQL to SQLite ?

One of which is: you are using a relative path for your SQLite database which won't work if your users install your application in e.g. Program Files as it's a read-only location.

Hi and welcome to devnet,

You have to give more information about your setup.

What device are you going to use ?
What version of Qt ?
What Linux distribution ?
What graphical backend ?

Hi and welcome to devnet,

I’d say it’s likely not. I’d recommend bringing this excellent question to the Qt Creator mailing list. You’ll find there Qt Creator’s developers/maintainers. This forum is more user oriented.

@Lasith
Your problems:

You only once call the returning function of the index, and in the designer. (In fact, when ui->name text changes, the function should be called every time.)

@Lasith said in Getting QStringList text to line edit based on a string inserted on another line edit:

QString index;
Name=ui->name->text();
for(int i=0;i<names.size();i++)
{
if(names[i]==Name){
index=i;
}

You want the string but in your cycle the 'i' of the integer. Why do not you pay attention to this(index = i)? Try compile the app? If yes, the compiler would inform you about it.

From your profile it seems that you are using Qt too several months. But it does not seem to be at all.

Do not try to conquer the peak, learn to walk first.

Thank you, @SGaist, I followed you advise and community helped to find a solution.

The way is simple:

Open ssh session to remote host with X forwarding enabled ssh -X user@host. And get know the DISPLAY variable. For example with echo $DISPLAY. It should look like localhost:10.0. Set environment variable DISPLAY in QtCreator -> Projects -> YourConfiguration -> Run -> RunEnvironment to known value from (1). Run and enjoy remote debug with GUI on local machine.

Note: closing ssh session will make forwarded display inaccessible and invalid.

@SGaist Your comment was very helpful. I checked the contents by printing them and saw that when I called the process, the file was still being written (since I write a JSON file from the GUI). So I added one more line QFile.close() and now the python script is called only after JSON gets written from the GUI. Now it is running fine.

@Lasith
Oh, thats a classic :)