Function dragEnterEvent

src/laybasic/laybasic/layViewObject.cc:310–336

  }

  void dragEnterEvent (QDragEnterEvent *event)
  {
  BEGIN_PROTECTED

    const DragDropDataBase *dd = get_drag_drop_data (event->mimeData ());
    if (dd) {

      db::DPoint p = mp_view->pixel_to_um (db::Point (event->pos ().x (), event->pos ().y ()));

      bool done = mp_view->drag_enter_event (p, dd);
      ViewObjectUI::service_iterator svc = mp_view->begin_services ();
      while (svc != mp_view->end_services () && !done) {
        ViewObjectUI::service_iterator next = svc;
        ++next;
        done = (*svc)->drag_enter_event (p, dd);
        svc = next;
      }

      if (done) {
        event->acceptProposedAction ();
      }

    }

  //  Note: Qt does not like popups during drag-and-drop operations ...
  END_PROTECTED_SILENT
  }

  void dragLeaveEvent (QDragLeaveEvent * /*event*/)
  {