#include "SceneObserverItem.hxx"#include "QtGuiContext.hxx"#include "ItemMimeData.hxx"#include "Scene.hxx"#include "SchemaItem.hxx"#include "Resource.hxx"#include <QGraphicsSceneMouseEvent>#include <QApplication>#include <QDrag>#include <QPixmap>#include <QBitmap>#include <QPainter>#include "YacsTrace.hxx"