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.


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

class DeclarativeView : public QDeclarativeView {



   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)));
   return app.exec();



import QtQuick 1.0

Item {

   width: 200; height: 300
   signal viewClicked(string first, string second)
   MouseArea {
       anchors.fill: parent
       onClicked: viewClicked("first", "second")