QQML Component: Component is Not Ready

celica

Hello Folks
Quick query for you:
I am trying to embed some QML componenets into a pretty large existing C++/QT project built in visual studio 2013
I've read every thread on here with no joy
My QML is so simple:

**import QtQuick.Controls 2.0
import QtQuick 2.0

Button {
objectName: "buttonTest"
}**

My C++ is:

QQmlEngine engine;

QQmlComponent component(&engine, QUrl(QStringLiteral("qrc:/aos.qml")));

QObject *object = component.create();
QObject* item = object->findChild<QObject *>("buttonTest");

I've tried both below, with still the same error QQML Component: Component is Not Ready:

QQmlComponent component(&engine, QUrl(QStringLiteral("qrc:/aos.qml")));
QQmlComponent component(&engine, QUrl::fromLocalFile(QDir::currentPath() + "\Resources\videos\aos.qml"));

IntruderExcluder

Have you tried to print component.errors()?

celica

@IntruderExcluder said in QQML Component: Component is Not Ready:

component.errors()

No I haven't tried that, I will now though. Thanks
What would be the best way to go about that?

IntruderExcluder

You can use QDebug to print errors to console:

#include <QDebug>
...
qDebug() << component.errors();

They are pretty readable. If you do not know what errors mean, you can post them here.

celica

@IntruderExcluder Thats great, thanks a lot for the advice. I'll let you know how it goes

celica

@IntruderExcluder That debug was great advice and pointed me to my issue.
The issue been - module “QtQuick.Controls” is not installed
But when I go to the QT Project Settings within visual studio the option to add this module (Quick Controls 2) is greyed out.
I can add Qt Quick & Qt Quick Widgets no problem
Would you know how to install Quick Controls for Visual Studio 2013 & QT5.5 ?

jsulm

@celica said in QQML Component: Component is Not Ready:

Would you know how to install Quick Controls for Visual Studio 2013 & QT5.5 ?

Not possible.
See https://doc.qt.io/qt-5/qtquickcontrols-index.html
"The module was introduced in Qt 5.7".

celica

@jsulm Thanks, that would explain it so.
Is it possible to generate a tumbler from 5.5 ?

JKSH

@celica said in QQML Component: Component is Not Ready:

Is it possible to generate a tumbler from 5.5 ?

As I said in https://forum.qt.io/topic/110586/tumbler-and-qt5-5, add import QtQuick.Extras 1.4 to your *.qml file

celica

@JKSH Thanks for the input. import QtQuick.Extras 1.4 still gives me the QML component not found error.
So i updated the main project to visual studio 2017 with QT 5.12 and now I have it working.