[Solved] Trouble passing QList<QObject*> to QML

mpmcbride7

I am new to C++ and QT so if this problem is obvious, I apologize.

I am having some issues passing a list of QObjects to QML. (Actually I am having trouble creating the QList in the first place).

Here is a stripped version of my code that I am having trouble with:

Interface.pro:
@TEMPLATE = app

QT += qml quick widgets sql network

CONFIG += c++11

SOURCES += main.cpp
character.cpp
cbobject.cpp

RESOURCES += qml.qrc

Additional import path used to resolve QML modules in Qt Creator's code model

QML_IMPORT_PATH =

Default rules for deployment.

include(deployment.pri)

HEADERS +=
character.h
cbobject.h
@

cbobject.h
@#ifndef CBOBJECT_H
#define CBOBJECT_H

#include <QObject>
#include <QString>
#include <QList>

class cbObject : public QObject
{
Q_OBJECT

Q_PROPERTY(QString id READ id WRITE setid NOTIFY idChanged);
Q_PROPERTY(QString name READ name WRITE setName NOTIFY nameChanged);
Q_PROPERTY(QString color READ color WRITE setColor NOTIFY colorChanged);

public:
cbObject(QObject *parent = 0);
cbObject(const QString &id, const QString &name, const QString &color, QObject *parent=0);

QString id();
void setid(QString id);

QString name();
void setName(QString nme);

QString color();
void setColor(QString clr);

signals:
void idChanged();
void nameChanged();
void colorChanged();

public slots:

private:
QString m_id;
QString m_name;
QString m_color;

};

#endif // CBOBJECT_H
@

cbobject.cpp
@#include "cbobject.h"

QString cbObject::id(){
return m_id;
}

void cbObject::setid(QString id){
if (id != m_id) {
m_id = id;
emit idChanged();
}
}

QString cbObject::name(){
return m_name;
}

void cbObject::setName(QString nme){
if (nme != m_name) {
m_name = nme;
emit nameChanged();
}
}

QString cbObject::color(){
return m_color;
}

void cbObject::setColor(QString clr){
if (clr != m_color){
m_color = clr;
emit colorChanged();
}
}

cbObject::cbObject(QObject *parent) :
QObject(parent)
{
}
@

character.h
@#ifndef CHARACTER_H
#define CHARACTER_H

#include <QStringList>
#include <QSqlDatabase>
#include <QSettings>
#include <QNetworkReply>

#include <QObject>

class character : public QObject
{
Q_OBJECT

public:
explicit character(QObject *parent = 0);
void getitemlist();

QList<QObject*> ritem;

signals:

public slots:

private:

};

#endif // CHARACTER_H
@

character.cpp
@#include <QDebug>
#include <QFileDialog>
#include <QDir>
#include <QStandardPaths>
#include <QSqlQuery>
#include <QSqlRecord>
#include <QSqlError>
#include <QSettings>
#include <QFile>

#include "character.h"
#include "cbobject.h"

#define MaxLogSize 100

void character::getitemlist(){
ritem.clear();
ritem.append(new cbObject("1","Name1","red",this));
ritem.append(new cbObject("2","Name2","black",this));
}

// Character file Functions

character::character(QObject *parent) :
QObject(parent)
{
}

@

and main.cpp:
@#include <QGuiApplication>
#include <QQmlEngine>
#include <QQmlComponent>
#include <QtCore>
#include <QtGui>
#include <QtQuick>

#include "character.h"

int main(int argc, char *argv[])
{
QGuiApplication app(argc, argv);
app.setApplicationDisplayName("PFCM");

QUrl qmlSource("qrc:/main.qml");

QQmlEngine *engine = new QQmlEngine();
app.connect(engine, SIGNAL(quit()), SLOT(quit()));
character ch;

engine->rootContext()->setContextProperty("ch", &ch);
engine->addImportPath("qrc:/other");

QQmlComponent *component = new QQmlComponent(engine);

component->loadUrl(qmlSource);
if (!component->isReady())
{
    qWarning("%s", qPrintable(component->errorString()));
    return -1;
}

QQuickItem *item = qobject_cast<QQuickItem *>(component->create());

return app.exec&#40;&#41;;

}
@

I am developing with QT 5.3.

When I compile it I get the following compiler error:

@Undefined symbols for architecture x86_64:
"cbObject::cbObject(QString const&, QString const&, QString const&, QObject*)", referenced from:
character::getitemlist() in character.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [Interface.app/Contents/MacOS/Interface] Error 1
20:32:05: The process "/usr/bin/make" exited with code 2.
Error while building/deploying project Interface (kit: Desktop Qt 5.3 clang 64bit)
When executing step "Make"@

I have been trying to use this as a guide:

http://qt-project.org/doc/qt-5/qtquick-modelviewsdata-cppmodels.html#qobjectlist-based-model

I am really struggling with this and I would appreciate any help.

Thanks

mpmcbride7

Thanks!

Just what I needed.