Connect a complex signal from QML to Qt

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

main.cpp

1. include <QtGui>
2. include <QtDeclarative>

class DeclarativeView : public QDeclarativeView {

   Q_OBJECT

public:

   DeclarativeView(const QUrl& source) 
       : QDeclarativeView(source)
   {
   }

public slots:

   void testSlot(QString string1, QString string2) 
   {
       qDebug() << string1 << string2;
   }

};

1. 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)), &view, SLOT (testSlot(QString, QString)));
   
   view.resize(200,200);
   view.show();
   return app.exec();

}

main.qml

import QtQuick 1.0

Item {

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

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

}