So I tried out a horrible hack – here it is:
main.cpp:
...
dataList.append( new DataObject( "c++ entry6 (purple)", "purple" ) );
QmlApplicationViewer viewer;
QDeclarativeContext * context = viewer.rootContext();
context->setContextProperty( "cppModel", QVariant::fromValue(dataList) );
context->setContextProperty( "cppModelCount", QVariant::fromValue(dataList.count()) );
viewer.setOrientation(QmlApplicationViewer::ScreenOrientationAuto);
...
cpptest.qml:
...
interactive: true
//model: qmlModel
model: cppModel
delegate: Rectangle {
width: 100
height: 100
color: colour
Text {
anchors.centerIn: parent
text: name
}
}
path: Path {
startX: - my_path_view.width * cppModelCount / 2 + my_path_view.width / 2
startY: my_path_view.height / 2
PathLine {
x: my_path_view.width * cppModelCount / 2 + my_path_view.width / 2
y: my_path_view.height / 2
}
}
...
This actually produced the expected result. But its a terrible hack. Why is this not working properly? I can’t believe that this is as-designed – it really does seem to be a Qt bug in the Path object, or the C++ bindings. cppModel.count, according to my debug printouts in the qml, is never available – in fact, the object that cppModel is bound to has no members at all.
I’ve build Qt before and I have the source – is there any place that anyone could point me to where I could start debugging this?
↧
