QEvent in qml

[bundickt]

Is there a way to pass a QEvent, QKeyEvent or QMouseEvent from c++ to qml without writing my own wrapper classes?

[mbrasser]

You will need to wrap them in some fashion (you can see the wrappers used by the built-in elements at src/declarative/graphicsitems/qdeclarativeevents_p.h).

Regards,
Michael

[bundickt]

Thanks Michael

I implemented wrappers similar to the ones in qdeclarativeevents_p.h but when I try to use them in my qml I get this error:

QMetaProperty::read: Unable to handle unregistered datatype 'QMLKeyEvent*' for property 'QDeclarativeBoundSignalParameters::event'

I register the QMLKeyEvent class with this call:

@
qmlRegisterType<QMLKeyEvent>();
@

And at the end of my header file that contains the QMLKeyEvent class I put:

@
QML_DECLARE_TYPE(QMLKeyEvent)
@

Is there something else I need to do to register this type?

[mbrasser]

I can't think of anything else you'd need to do.

What version of Qt are you running (there have been a lot of bug fixes since 4.7.0)? Can you share what your QML looks like?

Regards,
Michael

[bundickt]

I believe I'm using Qt 4.7.1.

My QML code looks like this:

@
UserEventFilter {
id: userEventFilter;

onKeyPressed: {
console.log(event.text);
}
}
@

UserEventFilter code looks like this:

@
bool UserEventFilter::processKeyPress(QEvent *event) {
QMLKeyEvent ke(*static_cast<QKeyEvent *>(event));
ke.setAccepted(false);

emit keyPressed(&ke);
emit userEventOccurred();

return ke.isAccepted();
}
@

I'm going to upgrade to Qt 4.7.2 and see what happens.

[bundickt]

Are there any examples out there that show how to emit a signal with an argument that is not a basic type?
Also, are there examples of emitting a signal with an argument that is not read only?

[bundickt]

It's working... I think I had something wrong with my build.