View source for Connect a complex signal from QML to Qt

[[Category:snippets]]

'''English''' | [[Connect_a_complex_signal_from_QML_to_Qt_German|Deutsch]]

= Connecting a complex signal from QML to Qt =

The example code below shows how you can connect complex signals from QML to Qt.

main.cpp
<code>
#include <QtGui>
#include <QtDeclarative>

class DeclarativeView : public QDeclarativeView
{
 Q_OBJECT
public:
 DeclarativeView(const QUrl &amp; source) : QDeclarativeView(source)
 {}
 public slots:
 void testSlot(QString string1, QString string2)
 {
 qDebug() << string1 << string2;
 }
};

#include "main.moc"
int main(int argc, char **argv)
{
 QString file = "main.qml";

QApplication app(argc, argv);
 DeclarativeView view(QUrl::fromLocalFile(file));

QDeclarativeItem '''item = qobject_cast<QDeclarativeItem'''>(view.rootObject());
 QObject::connect(item, SIGNAL (viewClicked(QString , QString)), &amp;view, SLOT (testSlot(QString, QString)));

view.resize(200,200);
 view.show();
 return app.exec();
}
</code>

main.qml
<code>
import QtQuick 1.0

Item {
 width: 200; height: 300
 signal viewClicked(string first, string second)

MouseArea {
 anchors.fill: parent
 onClicked: viewClicked("first", "second")
 }
}
</code>