[Qt-interest] "Unable to save type" when drag in a QTreeWidget

[cabieces julien]

Hi,

I want to develop drag and drop in a QTreeWidget. So, I implement
dragEnterEvent, dragMoveEvent and dropEvent methods. It works fine but when
I drag, I got this message :

QVariant::save: unable to save type 136.

Where type 136 belongs to QMetaType::ObjectStar type. It comes from the fact
that I filled my QTreeWidgetItem data with "QObject*" objects and Qt try to
serialize it in a DataStream but it doesn't have the appropriates operator<<
and operator>>.

So, I would like to know the good way to implement drag'n drop or maybe the
way to prevent from this message.

Thanks

Julien
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