Connect a complex signal from QML to Qt

From Qt Wiki
Jump to: navigation, search

En Ar Bg De El Es Fa Fi Fr Hi Hu It Ja Kn Ko Ms Nl Pl Pt Ru Sq Th Tr Uk Zh

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

main.cpp

#include <QtGui>
#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;
    }
};

#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")
    }
}