Here is a bit of the code that we used in our desktop QML application to reload
the application when the user pressed F7.
QQmlApplicationEngine engine;
QmlReloader reloader(&engine);
QObject::connect(
&engine, &QQmlApplicationEngine::objectCreated, qApp,
[](QObject* obj, const QUrl& objUrl) {
if(obj == nullptr)
{
qDebug() << "Can't load " << objUrl << " exiting.";
QCoreApplication::exit(-1);
}
},
Qt::QueuedConnection);
qmlRegisterSingletonInstance<IPresentationManager>("NX.interfaces", 1, 0,
"Presenter", &presenter);
qmlRegisterSingletonInstance<NXClipboard>("NX.interfaces", 1, 0,
"Clipboard", &clipboard);
engine.addImportPath("qrc:/");
engine.addImportPath(DREAM3DNX::k_QmlNXResourceRoot);
engine.load("qrc:/main.qml");
qDebug() << "QML2_IMPORT_PATH:" << engine.importPathList();
QObject::connect(&reloader, &QmlReloader::reload, qApp, [&presenter,
&clipboard](QQmlApplicationEngine* engine) {
qDebug() << "F7 Reloader Activated... ";
NX::NXParameterManager* parameterManager =
NX::NXParameterManager::Instance();
parameterManager->setQmlParameterPrefix(
#ifdef Q_OS_WINDOWS
"file:///"
#else
"file://"
#endif
+ DREAM3DNX::k_QmlNXResourceRoot.toStdString());
qmlRegisterSingletonInstance<IPresentationManager>("NX.interfaces", 1, 0,
"Presenter", &presenter);
qmlRegisterSingletonInstance<NXClipboard>("NX.interfaces", 1, 0,
"Clipboard", &clipboard);
engine->addImportPath(DREAM3DNX::k_Qml3rdPartyResourceRoot);
engine->addImportPath(DREAM3DNX::k_QmlNXResourceRoot);
engine->load(QUrl::fromLocalFile(DREAM3DNX::k_QmlApplicationsResourceRoot
+ "/DREAM3D/main.qml"));
});
Maybe that helps. Maybe it does not.
--
Michael Jackson | Owner, President
BlueQuartz Software
[e] mike.jack...@bluequartz.net
[w] www.bluequartz.net
On 5/24/22, 8:31 PM, "Interest on behalf of Alexander Dyagilev"
<interest-boun...@qt-project.org on behalf of alervd...@gmail.com> wrote:
Hello,
Try to call App.changeStyle via queued connection. I.e. your
Button::onClicked handler must exit BEFORE you shut the engine down.
On 5/24/2022 6:45 PM, randomslap--- via Interest wrote:
> Hello Qt people!
>
> I would like to inquire your assistance regarding this:
> Is there a way to change the style of a QML(QuickControls2) UI of an
> application while it runs? Specifically the program should work with
> QQmlApplicationEngine and an ApplicationWindow QML Item.
>
> I have tried making a simple program that could reload its quick
> style upon clicking one of the buttons on it. The program appears at
> first and seems to close and execute the function that tries to reload
> the style but seems to fail on engine.load(). I have sent an image of
> all the code and the code files too.
>
> I would specifically like to implement something like this on a
> Desktop Environment and being able to load a new style on runtime
> would allow for unlimited "theming" options.
>
> Thank you for maintaining the Qt Project.
>
> _______________________________________________
> Interest mailing list
> Interest@qt-project.org
> https://lists.qt-project.org/listinfo/interest
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