Add QML objects to your C++ widget application.

[bask185]

My company's High Command has ordered me to develop a tumbler.

This tumbler or rrrrrrrr-thing as we call it is a QML type object. And I have no experience with QML. I have already googled some stuff but I can't find how to add a QML object to the rest of my application.

I do know:

• I have to use a QGraphicView widget. I already have one of those in use with some extra space left. (I'm using Qt 5.8)
• I must include: #include <QtQuick/QQuickView> and #include <QtQml/QQmlEngine> in the header file
• I must make a new QML file.

What I don't know:

• how can I make a QML object in my cpp file and give it a place on my QGraphicView?

[bask185]

Ok that solved the error problems. I don't think I will forget this a 3rd time @jsulm ;)

I also ditched the code I had and I moved the QML file to the resource folder. Using Qt creator's convenient style sheet bar thing (that bar in the UI on the right with all the parameters) I selected the QML file and I got me a working Tumbler \o/

I am only far removed from the part in which this tumbler is going to be but... minor detail

[VRonin]

http://doc.qt.io/qt-5/qquickwidget.html

[bask185]

Hm so far for the need of a QGraphicView :)

I have done:

• added to header.

#include <QtQuickWidgets/QQuickWidget>

• added to header

QQuickWidget *view;

• added to setup of CPP file

view = new QQuickWidget;
view->setSource(QUrl::fromLocalFile("Tumbler.qml"));
view->show();

But I'm having error messages

mainwindow.cpp:-1: error: undefined reference to `QQuickWidget::QQuickWidget(QWidget*)'
mainwindow.cpp:-1: error: undefined reference to `QQuickWidget::setSource(QUrl const&)'
mainwindow.cpp:-1: error: undefined reference to `QQuickWidget::QQuickWidget(QWidget*)'
mainwindow.cpp:-1: error: undefined reference to QQuickWidget::setResizeMode(QQuickWidget::ResizeMode)'
:-1: error: collect2: error: ld returned 1 exit status

Did I include the wrong library or something????

BTW: I also added a QQuickWidget to the ui which is named 'view'

[jsulm]

@bask185 said in Add QML objects to your C++ widget application.:

QQuickWidget

Did you add

QT += quickwidgets

to your pro file as is stated here http://doc.qt.io/qt-5/qquickwidget.html ?

[bask185]

Ok that solved the error problems. I don't think I will forget this a 3rd time @jsulm ;)

I also ditched the code I had and I moved the QML file to the resource folder. Using Qt creator's convenient style sheet bar thing (that bar in the UI on the right with all the parameters) I selected the QML file and I got me a working Tumbler \o/

I am only far removed from the part in which this tumbler is going to be but... minor detail

[Groovy]

i still don't get it how did you add the qml to the graphic view .ui