Created
May 19, 2016 14:14
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#include <QGuiApplication> | |
#include <QQmlApplicationEngine> | |
#include <qqmlcontext.h> | |
#include <qqml.h> | |
#include <QtQuick/qquickitem.h> | |
#include <QtQuick/qquickview.h> | |
#include "mymodel.h" | |
int main(int argc, char *argv[]) | |
{ | |
QGuiApplication app(argc, argv); | |
QQmlApplicationEngine engine; | |
qmlRegisterType<BoxModel>("com.example.qml", 1, 0, "BoxModel"); | |
qmlRegisterType<ModelFactory>("com.example.qml", 1, 0, "ModelFactory"); | |
engine.load(QUrl(QStringLiteral("qrc:/main.qml"))); | |
return app.exec(); | |
} | |
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import QtQuick 2.5 | |
import QtQuick.Controls 1.4 | |
import QtQuick.Controls.Styles 1.4 | |
import QtQuick.Layouts 1.2 | |
import com.example.qml 1.0 | |
ApplicationWindow | |
{ | |
visible: true | |
width: 640 | |
height: 480 | |
// builder of dynamic models | |
ModelFactory { id: maker } | |
Column | |
{ | |
anchors.fill: parent | |
Repeater | |
{ | |
// create dynamic model | |
model: maker.makeModel(); | |
delegate: Label | |
{ | |
id: label | |
text: model.name | |
MouseArea | |
{ | |
anchors.fill: parent | |
onClicked: | |
{ | |
// works once until gc() | |
console.log("clicked on " + model.name) | |
// wont work anymore. model is destroyed | |
gc(); | |
} | |
} | |
} | |
} | |
} | |
} | |
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#include <QAbstractListModel> | |
#include <QQmlApplicationEngine> | |
#include <QObject> | |
#include <QString> | |
#include <QDebug> | |
class BoxModel : public QAbstractListModel | |
{ | |
Q_OBJECT | |
public: | |
~BoxModel() | |
{ | |
// see that it does get destroyed | |
qDebug() << "~BoxModel()"; | |
} | |
int rowCount(const QModelIndex& parent = QModelIndex()) const override | |
{ | |
return 5; | |
} | |
QVariant data(const QModelIndex &index, int role) const override | |
{ | |
int ix = index.row(); | |
if (ix < 1) return "Larry"; | |
if (ix < 2) return "Barry"; | |
if (ix < 3) return "Gary"; | |
if (ix < 4) return "Harry"; | |
return "Sally"; | |
} | |
QHash<int, QByteArray> roleNames() const override | |
{ | |
QHash<int, QByteArray> roles; | |
roles[Qt::UserRole+1] = "name"; | |
return roles; | |
} | |
}; | |
class ModelFactory: public QObject | |
{ | |
Q_OBJECT | |
public: | |
Q_INVOKABLE BoxModel* makeModel() | |
{ | |
return new BoxModel(); | |
} | |
}; |
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TEMPLATE = app | |
QT += qml quick | |
CONFIG += console | |
SOURCES += main.cpp | |
RESOURCES += qml.qrc | |
HEADERS += mymodel.h | |
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<RCC> | |
<qresource prefix="/"> | |
<file>main.qml</file> | |
</qresource> | |
</RCC> |
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