Cannot assign to non-existent property "lon" lon: "3"
I wish to see how QQmlListProperty is used. I tried the following but I am not sure if this is the correct way to do it. I got an error shown in the title.
aa.h
Code:
#ifndef IMO
#define IMO
#include <QQmlListProperty>
#include "DummyClass.h"
{
Q_OBJECT
Q_PROPERTY (QQmlListProperty <DummyClass> functionWhat READ functionWhat)
public:
QQmlListProperty <DummyClass> functionWhat()
{
return QQmlListProperty <DummyClass> (this, dummyList);
}
private:
QList <DummyClass
*> dummyList;
};
#endif
aa.cpp
Code:
#include "aa.h"
#include <QtGui/QGuiApplication>
#include "qtquick2applicationviewer.h"
{
qDebug ("In Constructor.");
}
void appendDummies (QQmlListProperty<DummyClass> *property, DummyClass *dc)
{
qDebug ("Do nothing. Can't add to a directory using this method.");
}
DummyClass.h
Code:
#ifndef IM
#define IM
#include <QObject>
{
private:
Q_OBJECT
Q_PROPERTY (bool functionWhat READ functionWhat WRITE functionSetWhat)
public:
DummyClass
(QObject *parent
= 0) {}
float lat; float lon;
bool functionWhat ()
{
qDebug ("In functionWhat");
}
public slots:
void functionSetWhat (bool arg)
{
qDebug ("In functionWhatSlot");
}
signals:
void functionWhatChanged (bool arg);
};
#endif
main.cpp
Code:
#include <QtGui/QGuiApplication>
#include "qtquick2applicationviewer.h"
#include "/home/anisha/qmllistproperties/DummyClass.h"
#include <QtQml>
#include "/home/anisha/qmllistproperties/aa.h"
int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
const char* ocuui = "OCUUI"; // @uri OCUUI
qmlRegisterType <DummyClass> (ocuui, 1, 0, "DummyClass");
qmlRegisterType <SubClass> (ocuui, 1, 0, "SubClass");
QtQuick2ApplicationViewer viewer;
viewer.setMainQmlFile(QStringLiteral("qml/untitled/main.qml"));
viewer.showExpanded();
return app.exec();
}
main.qml
Code:
import QtQuick 2.0
import OCUUI 1.0
Rectangle {
width: 360
height: 360
Text {
text: qsTr("Hello World")
anchors.centerIn: parent
}
SubClass
{
functionWhat:
[
DummyClass
{
lat: "2"
lon: "3"
}
]
}
MouseArea {
anchors.fill: parent
onClicked: {
Qt.quit();
}
}
}
Re: Cannot assign to non-existent property "lon" lon: "3"
I am not sure what you are looking for. The QML engine tells you that there is no property "lon" in DummyClass and indeed there isn't.
Cheers,
_