@J.Hilk Hey, Thank you for all of your help. Solved the problem thanks to you!

If there is anyone facing the same issue, solved like this,
Created a source file named "restarter"
restarter.h

#ifndef RESTARTER_H #define RESTARTER_H #include <QObject> class Restarter : public QObject { Q_OBJECT public: explicit Restarter(QObject *parent = nullptr); Q_INVOKABLE void makeRestart(); signals: public slots: }; #endif // RESTARTER_H

restarter.cpp (note: my application works as a service named "myservice" on system, so I can not restart it as restarting a regular application.)

#include "restarter.h" #include <QProcess> Restarter::Restarter(QObject *parent) : QObject (parent) { } void Restarter::makeRestart() { QProcess::execute("sudo service myservice restart"); }

If your application works NOT AS A SERVICE, BUT AN APPLICATION,
restarter.cpp

#include "restarter.h" #include <QApplication> #include <QProcess> Restarter::Restarter(QObject *parent) : QObject (parent) { } void Restarter::makeRestart() { qApp->quit(); QProcess::startDetached(qApp->arguments()[0], qApp->arguments()); //application restart }

You need to register "restarter.cpp" as a QML registery (I know, stupid sentence)
So you need to insert these lines in main.cpp

#include "restarter.h" qmlRegisterType<Restarter>("closx.restarter", 1, 0, "Restarter");

and use it on your QML file:

import closx.restarter 1.0 Restarter { id:restarter } Rectangle{ id: restartbg width: 120 height: 70 radius: 8 color:"black" anchors.centerIn: parent z:344 Text{ anchors.centerIn: parent text:qsTr("Restart") + mytrans.emptyString font.family:GSystem.myriadproita.name font.pixelSize: 18 color: "white" } MouseArea{ anchors.fill: parent onClicked: { restarter.makeRestart() } onPressed: { restartbg.color = "#1c1c1c" } onReleased: { restartbg.color = "black" } } }

Again, thanks to @LeLev and @J-Hilk for everything.

@lopeztel said in Property of object is not a function:

This is what happens when you spend hours staring at the screen ...

Sometimes when you have had too much to think you need a break and coffee.

Hi All,

I found that the url which my embedded device use to get the route is older one.
http://router.project-osrm.org/viaroute?instructions=true&loc=8.5686,76.8731&loc=8.5241,76.9366 - server replied: Not Found

so i tried to change the url by giving,

PluginParameter { name: "osm.routing.host" value: "http://router.project-osrm.org/route/v1/driving/" }

but the new url which was generated by device is,

http://router.project-osrm.org/route/v1/driving/?instructions=true&loc=8.5686,76.8731&loc=8.5241,76.9366 - server replied: Not Found

the required url should be something like,

http://router.project-osrm.org/route/v1/driving/76.8731,8.5686;76.9366,8.5241?overview=full&steps=true&geometries=polyline&alternatives=true

because of the incorrect format the JSON respone which I receive is "Not Found"

I was able to recreate the issue in PC by giving

PluginParameter { name: "osm.routing.apiversion" value: "v4" }

so i thought if i update the osm.routing.apiversion to v5, I may succeed but i still i got the same error. Please help.

@KroMignon Hey! I forgot to answer to you! Did not meant to be rude and sorry for that :(
Conclusion: I gave some tries with your suggest and lots of other stuff on internet, but failed :D
So I have created a "Restart the system to apply all the language changes" screen and a "restart/cancel" choice on a language change state. I guess it will be okay even if it wont be "real-time" :P
Good Work!

@KroMignon LOVE YOU!
Thank you very much, worked w/out problems, and made me understand my mistake.
note: Needed to update .ts file and release .qm file after changing code.

@SGaist thanks I‘ll bookmark that as well

I was just googleing qtcharts source and took the firts link 🙈

I took another approach and executed the method directly in QML and set the "model". Now it works.

I just solved it like this:
listview.model = <myclassandmethod>(<heremyparameters>)

Many thanks to everyone who answered me.

Greetings,
Sven

@sm-a with pleasure ...

Hi and welcome to devnet,

Based on this blog post, you should check the status of that within Qt's documentation.

@VRonin Thanks dear. Your link helped me alot.

@alizadeh91 have you check the documentation about CircularGaugeStyle?

When defining your own needle component, the only properties that the style requires you to set are the implicitWidth and implicitHeight.

which looks like you're not setting.

Also this document refers to styling the needle and those mentioned properties.

Icreate my page1form in main.qml
inside a stackview.

ApplicationWindow {
visible: true
width: 640
height: 1134
title: qsTr("Optika")

StackView { id: stackView anchors.fill: parent Page1Form{ id: optikaPage } }

}

br, andrej

Glad you found out and thanks for sharing !

Use a separate QObject-derived class and set it as context property.

Other options:

https://doc.qt.io/qt-5/qtqml-cppintegration-topic.html https://doc.qt.io/qt-5/qtqml-cppintegration-interactqmlfromcpp.html

Hi everyone! I've solved this problem. In my case the problem was in asynchronous load images into another thread. When I changed asynchronous method to the synchronous all work fine.

@Ilja
Super good to hear.
Thank you for the feedback.
happy programming.

I fixed the issue by dropping the source string from the .metainfo files.

For anyone that cares I was following these instructions: http://doc.qt.io/qtcreator/creator-qml-modules-with-plugins.html and on step 5 I picked a random metainfo file when I searched the Qt folder for .metainfo, not the one they specifically chose (qtcharts.metainfo vs qtquickcontrols2.metainfo)

The qtcharts one was probably for some other type of module use where specifying the source does something I don't need, the qtquickcontrols2 ended up having the syntax I really wanted in the end. Eventually I found this example and found out dropping the source worked: https://forum.qt.io/topic/56207/how-to-load-custom-qml-controls-into-the-qml-designer

@MaxL Yes! That did it. I had been misusing that option from the start. Thanks for spotting it!

Thanks for the feedback.
I have a follow up question though.

Where are QML's default role names documented? I couldn't see the list. It would save me a lot of time. EDIT Here they are: link.

@raven-worx Thanks for your answer. There is no other place in the code where I update/modify the model. Also the combo box is already created when the slot is connected and called, if this is what you meant. Initially I declare the combo box as such with an empty model:

ComboBox { id: comboInput visible: false anchors.fill: parent model: ListModel { id: model } }

And this is the connection in C++ (plus the code to get the settings view inside which the combo box exists):

//Connect signals emitted and received by Settings Form m_pQmlRoot = qmlEngine.rootObjects()[0]; item = qvariant_cast<QObject*>(m_pQmlRoot->property("settingsPage")); QObject::connect(bluetoothManager, SIGNAL(sig_DeviceDiscovered(QVariant)), item, SLOT(slot_deviceDiscovered(QVariant)));

I've had problems with the way Sketch exports SVGs.

Text drifts (as you have seen), and items that were rotated in Sketch unrotate themselves when exported.

I'd suggest that you export as a PNG, rather than SVG.

Hi,

What graphic hardware are used on these machines ?
Version of the driver ?

Also note that 5.7 is outdated, you should consider updating to the current LTS which is Qt 5.9.4 or even 5.10

@jpnurmi said in Can QTest or Qt Quick Test be used for automated system (not unit) testing of QtQuick Control2/C++ application?:

How about Squish? It's also used for release test automation of Qt.

Thank you for the suggestion! Yes we noticed Squish. But now we develop an application prototype using QML and until some milestone would like not to use commercial tools. On the other hand we don't need a thorough test coverage yet. We'd like mostly sanity tests to validate. And we want to try Qt test frameworks or implement feeding navigation commands and verification ourselves with Qt C++/QML means.

need to check Qt classes for system settings and native look and feel,
and of adopting those changes for App.

Thanks,

@GrecKo I found that it is a bug that is affecting all platforms with certain screen resolutions. Some developers may not notice this issue but the end user may be using a certain screen resolution and be affected by the issue! You can login to https://bugreports.qt.io/ and Vote THIS bug if you also want this bug to be resolved.

Hi and welcome to devnet,

That's a question you should rather bring to the interest mailing list. You'll find there Qt's developers/maintainers. This forum is more user oriented.

Thanks for the reply!

I'll try to explain more detail my problem: I have a UI component with list view as a content. My component was created by C++ with loading a QML file as a content which user see when using my component. In C++ class I have a property 'delegate' which I using in QML content file for set a ListView delegate. All works fine but when I try to set delegate component and use inside index I receive error 'index is not a function of property'. My question is how I need to set delegate in C++ class which give me to use model index in a delegate element.

I think will be more detail if I share my component. Please check this link.

ClassB, you are using it in a property.

By the way, why not use QObjectList and a Q_INVOKABLE method ? Might be more straightforward.

More information on how to integrate CPP with QML here.

@pra7, @Wieland how can I access a list of Structure inside another Structure.
Eg: From the above example, I need to use

QList<MyNewStructure> m_StructList; How is that possible? I have tried, QList<MyNewStructure> m_StructList; Q_PROPERTY(QList<MyNewStruct> newStr MEMBER m_newStr) but didnt help.

This got me thinking about how I structure things, which generally results from starting with a small one-file prototype and then breaking bits of it off into different files. Here's an example (all these can be run with qmlscene main.qml):

First you might have

File main.qml

// main.qml import QtQuick 2.7 Rectangle { id: main width: 640 height: 480 property string msg0: "Some text" property string msg1: "Some more text" Column { anchors.centerIn: parent Text {text: main.msg0} Text {text: main.msg1} } }

then you might try and organize stuff a bit:

import QtQuick 2.7 Rectangle { id: main width: 640 height: 480 Item { id: config property string msg0: "Some text" property string msg1: "Some more text" } Column { anchors.centerIn: parent Text {text: config.msg0} Text {text: config.msg1} } }

then you might split that up with a Config.qml:

import QtQuick 2.7 Item { property string msg0: "Some text" property string msg1: "Some more text" }

and main.qml now simplified to:

import QtQuick 2.7 Rectangle { id: main width: 640 height: 480 Config {id: config} Column { anchors.centerIn: parent Text {text: config.msg0} Text {text: config.msg1} } }

and then you start moving out other bits of functionality e.g adding a Messages.qml:

import QtQuick 2.7 Column { anchors.centerIn: parent Text {text: config.msg0} Text {text: config.msg1} }

and main.qml now simplified to:

import QtQuick 2.7 Rectangle { id: main width: 640 height: 480 Config {id: config} Messages {} }

I've never felt any need for singletons in QML code at all. (Having the hosting C++ set some context properties based on environment or command-line-options is the probably the closest I've come).

@Eeli-K Thanks for the suggestion it worked and also there is another approach "Component.CreateObject()" in which we can create and destroy objects dynamically.

Hi,

If you want to mix widgets and QML then you should use QQuickWidget.

Hi,

At V-Play, we have an example on how to achieve this in our Twitter sample app. Check out the screenshots: (Sorry, didn't have time to record an animation ;) )

This sample needs the V-Play SDK to run, which might be useful if you are into app development.
If you don't want to install a third-party SDK, you still might be able to get some inspiration from the sample app.

Cheers,
Lorenz

Hi everyone!

I've found the problem in my component. I was forgot this line in my constructor:

m_contentItem = Q_NULLPTR;

So, all works fine for now! Thanks all for the help.