Hey there,
maybe it is a really dumb question but i am a bit confused about how signals and slots between c++ and qml work. I like to trigger a Custom event in my QML like following:
Text {
text: applicationData.getCurrentDateTime22()
Connections {
target: applicationData
onImageChanged: console.log("The application data changed!")
}
}
But i am not sure how to trigger “onImageChanged”.
here is some more code:
class ApplicationData : public QObject
{
Q_OBJECT
public:
Q_INVOKABLE QString getCurrentDateTime22(){
QString out;
out = "return value";
return out;
}
public slots:
//void imageChanged2();
signals:
void imageChanged();
};
int main(int argc, char *argv[])
{
QApplication app(argc, argv);
QQmlApplicationEngine engine;
ApplicationData data;
engine.rootContext()->setContextProperty("applicationData", &data);
engine.load(QUrl(QStringLiteral("qrc:///main.qml")));
return app.exec();
}
↧
