Connect a complex signal from QML to Qt/de

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Komplexes Signal von QML nach C++ senden (QtQuick 1)

Der Code-Schnipsel demonstriert, wie man unter QtQuick 1 ein komplexes Signal von QML aus zu einem in C++ implementierten Slot sendet.

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")
 }
}