When a Docking window contains a Qml Declarative (or Graphics) view and
it is dragged off the docking area, the state within
QDockWidgetPrivate::startDrag() at line 718 of qdockwidget.cpp is nulled
after the layout is unplugged in QMainWindowLayout::unplug(QWidget
*widget) at line 1798 of qmainwindowlayout.cpp.
This line calls the widgets own unplug method and
QDockWidgetPrivate::setWindowState at line 999. During this method the
docking window is hidden if it is visible at line 1021 and at this point
the previous state is nulled. This then causes an exception during the
assignment that follows the unplug at line 718.
Is this a know issue?
All I do to embed the Qml in a docking window is: -
m_scene = new QGraphicsScene;
m_scene->setSceneRect(0, 0, 400, 70);
declarativeView->setScene(m_scene);
m_engine = new QDeclarativeEngine;
m_component = new QDeclarativeComponent(m_engine);
connect(m_component,
SIGNAL(statusChanged(QDeclarativeComponent::Status)),
SLOT(statusComponent(QDeclarativeComponent::Status)));
m_component->loadUrl(QUrl::fromLocalFile("C:/samegame/SameGame.qml"));
Regards
David Robinsion
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