Error while using qmlRegisterType

saitej

Hi

I am trying to expose a C++ class to qml and I have used the following line of code in main.cpp after including the class header.

qmlRegisterType<FlightMapSettings>("FlightMapSettings",1,0,"MapSettings");

But I get these errors:

...../Qt5.6.0/5.6/gcc_64/include/QtQml/qqmlprivate.h:102: error: use of deleted function 'QQmlPrivate::QQmlElement<FlightMapSettings>::QQmlElement()'
void createInto(void *memory) { new (memory) QQmlElement<T>; }

..../Qt5.6.0/5.6/gcc_64/include/QtQml/qqmlprivate.h:93: error: no matching function for call to 'FlightMapSettings::FlightMapSettings()'
^

What could be the possible issue?

Thanks

? Offline

Hi! Please show us said header file.

saitej

@Wieland

#include <QObject>
#include <QStringList>

class FlightMapSettings : public QWidget
{
    Q_OBJECT

public:
    FlightMapSettings(QWidget *parent);
signals:
void mapProviderChanged(const QString& mapProvider);
    void mapTypesChanged(const QStringList& mapTypes);
};

? Offline

First of all , #include <QWidget> is missing. Second is the missing default constructor:

explicit FlightMapSettings(QWidget *parent = Q_NULLPTR);

? Offline

BTW, why do you register a QWidget derived class to the QML engine?

saitej

@Wieland

I have given the default constructor and it works. It was a copy paste mistake and I have removed the QWidget.

Thanks a lot!!