How to use QDeclarativeExtensionPlugin Items

syrianzoro

Hello, could any one please tell me how to use the c++ Items which registered using QDeclarativeExtensionPlugin within c++, for instance if you register a tableWidget , it will shown and work properly but how you can populate it with data using any kind of models

vsorokin

Did you read "Writing QML extensions with C++":http://doc.qt.nokia.com/4.7-snapshot/qml-extending-tutorial-index.html already?

syrianzoro

Yes I did, but I can't register any kind of existing models, I have worked for long time but in vain

andre

So, what are you trying to register exactly? A model or a view? Your first post seems to suggest a view, while your second post suggests a model. Could you clarify what you want to achieve please?

syrianzoro

both classes ... I have registered a subclass of view and Qtablewidget but I don't know the way in which I can populate them with data

andre

I don't think there is a way yet. AFAIK, the model interface used in Quick is still private API. There is an adaptor that makes it possible to use a QAbstractItemModel (-derived) class as such a model, but the other way around: using a QML-model in a QAbstractItemView is not supported.

Note that you using a QTableWidget derived class doesn't help here either. The *widget classes are not mend to be used with external models, but only with their own internal one. If you want to use external models, use a QTableView derived class instead.

syrianzoro

the following code works normally but I couldn't assign the model to the view using setproperty method

@#include <QtDeclarative/QDeclarativeExtensionPlugin>
#include <QtDeclarative/qdeclarative.h>
#include <QtGui/QGraphicsProxyWidget>
#include <QTableview>
#include <QSqlqueryModel>
#include <QDebug>

class MyView : public QGraphicsProxyWidget
{
Q_OBJECT
Q_PROPERTY(QSqlQueryModel *model READ model WRITE setModel)

public:
MyView(QGraphicsItem* parent = 0)
: QGraphicsProxyWidget(parent),view(new QTableView()),m_model(new QSqlQueryModel())
{

    setWidget(view);

}

void setModel(QSqlQueryModel *inModel)
{
m_model = inModel;
}

QSqlQueryModel *model()
{
return m_model;
}
private:
QTableView *view;
QSqlQueryModel *m_model;

};

class QWidgetsPlugin : public QDeclarativeExtensionPlugin
{
Q_OBJECT
public:
void registerTypes(const char *uri)
{
qmlRegisterType<MyView>(uri, 1, 0, "MyView");
}
};

#include "qWidgets.moc"

Q_EXPORT_PLUGIN2(qmlqwidgetsplugin, QWidgetsPlugin);@

this is the qml file

@import QtQuick 1.0
import "QWidgets" 1.0

Rectangle {
id: window

property int margin: 30

width: 640; height: 480
color: palette.window

MyView{

}

}
@