QT QML import ListModel from C++ to QML - qt

Question

How can i change the model of a PathView with c++ code ?
i add an objectName to my pathView to find it, then i change the property like this, but when i do that, my list is empty :
QDeclarativeItem *listSynergie = myClass.itemMain->findChild<QDeclarativeItem*> ("PathViewInscription");
listSynergie->setProperty("model", QVariant::fromValue(dataList));
My data list is fill like this :
QList<QObject*> dataList;
dataList.append(new synergieListObject("Item 1", "1",false));
dataList.append(new synergieListObject("Item 2", "2",true));
dataList.append(new synergieListObject("Item 3", "3",false));
dataList.append(new synergieListObject("Item 4", "4",false));
This is the code of my PathView :
PathView {
objectName: "PathViewInscription"
Keys.onRightPressed: if (!moving) { incrementCurrentIndex(); console.log(moving) }
Keys.onLeftPressed: if (!moving) decrementCurrentIndex()
id: view
anchors.fill: parent
highlight: Image { source: "../spinner_selecter.png"; width: view.width; height: itemHeight+4; opacity:0.3}
preferredHighlightBegin: 0.5
preferredHighlightEnd: 0.5
focus: true
model: appModel
delegate: appDelegate
dragMargin: view.width/2
pathItemCount: height/itemHeight
path: Path {
startX: view.width/2; startY: -itemHeight/2
PathLine { x: view.width/2; y: view.pathItemCount*itemHeight + itemHeight }
}
}
and the code of ListModel :
ListModel {
id: appModel
ListElement { label: "syn1"; value: "1"; selected:false}
ListElement { label: "syn2"; value: "2" ; selected:false}
ListElement { label: "syn3"; value: "3" ; selected:false}
}
what's wrong ?
Thanks !
EDIT :
the code of the appDelegate :
Component {
id: appDelegate
Item {
width: 100; height: 100
Text {
anchors { horizontalCenter: parent.horizontalCenter }
text: label
smooth: true
}
MouseArea {
anchors.fill: parent
onClicked: view.currentIndex = index
}
}
}
the code of my object :
#ifndef SYNERGIELISTOBJECT_H
#define SYNERGIELISTOBJECT_H
#include <QObject>
class synergieListObject : public QObject
{
Q_OBJECT
Q_PROPERTY(QString label READ label WRITE setLabel NOTIFY labelChanged)
Q_PROPERTY(QString value READ value WRITE setValue NOTIFY valueChanged)
Q_PROPERTY(bool selected READ selected WRITE setSelected NOTIFY selectedChanged)
public:
synergieListObject(QObject *parent=0);
synergieListObject(const QString &label,const QString &value,bool selected, QObject *parent=0);
QString label() const;
void setLabel(const QString &label);
QString value() const;
void setValue(const QString &value);
bool selected() const;
void setSelected(const bool &selected);
signals:
void labelChanged();
void valueChanged();
void selectedChanged();
private:
QString m_label;
QString m_value;
bool m_selected;
};
#endif // SYNERGIELISTOBJECT_H
c++ my object :
#include "synergielistobject.h"
synergieListObject::synergieListObject(QObject *parent): QObject(parent)
{
}
synergieListObject::synergieListObject(const QString &label,const QString &value,bool selected, QObject *parent): QObject(parent), m_label(label), m_value(value), m_selected(selected)
{
}
QString synergieListObject::label() const
{
return m_label;
}
void synergieListObject::setLabel(const QString &label)
{
if (label != m_label) {
m_label = label;
emit labelChanged();
}
}
QString synergieListObject::value() const
{
return m_value;
}
void synergieListObject::setValue(const QString &value)
{
if (value != m_value) {
m_value = value;
emit valueChanged();
}
}
bool synergieListObject::selected() const
{
return m_selected;
}
void synergieListObject::setSelected(const bool &selected)
{
if (selected != m_selected) {
m_selected = selected;
emit selectedChanged();
}
}

Answer 1

I have never used QdeclarativeItem to set model in QML . Try this instead
QDeclarativeContext *ctxt = view.rootContext(); ctxt->setContextProperty("model", QVariant::fromValue(dataList));
Declare the model as a property of the root. This way you can set model.Or add a function that takes model as argument and sets the model for the view. Then you can call this function from c++.