I have a custom QML item called "Cell.qml" which I'd like to insert dynamically in my root window and make it visible. I also tried changing the z property, but I couldn't fix it, the object is still invisible (even tough the output of root->dumpObjectTree() says the object exists as a child of the root window)
This is the result after executing the code
main.cpp
#include <QGuiApplication>
#include <QQmlApplicationEngine>
#include <QQmlComponent>
int main(int argc, char *argv[])
{
QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);
QGuiApplication app(argc, argv);
QQmlApplicationEngine engine;
engine.load(QUrl(QStringLiteral("qrc:/main.qml")));
QObject *root = engine.rootObjects()[0];
QQmlComponent component(&engine, "qrc:/Cell.qml");
if (component.isReady()){
QObject *object = component.create();
object->setParent(root);
engine.setObjectOwnership(object, engine.CppOwnership);
}
root->dumpObjectTree();
return app.exec();
}
main.qml
import QtQuick 2.9
import QtQuick.Window 2.2
Window {
visible: true
width: 640
height: 480
title: qsTr("Hello World")
}
Cell.qml
import QtQuick 2.0
import QtQuick.Controls 2.3
Item{
property string txt: ""
property color c: "#d4ccc4"
visible: true
z:20
Rectangle {
width: 75; height: 75
color: c
visible: true
radius : 3
scale : 1
z:10
Text{
anchors.centerIn: parent
text: txt
font.family: "Helvetica"
font.pointSize: 20
color: "white"
}
}
}
Output of root->dumpObjectTree();:
QQuickWindowQmlImpl::
QQuickRootItem::
Cell_QMLTYPE_0::
QQuickRectangle::
QQuickText::
setParent()
sets a non-visual, QObject
level parent
member. QQuickItem
has another property, parentItem
which is the parent
QQuickItem
property in QML, it is that property that needs to be set so the object appears visually.