コード例 #1
0
QModelIndex TreeListModel::parent(const QModelIndex &index) const
{
  if (!index.isValid())
    return QModelIndex();

  TreeList *childItem = static_cast<TreeList*>(index.internalPointer());
  if (childItem == rootItem)
    return QModelIndex();

  TreeList *parentItem = childItem->parent();

  if (parentItem == rootItem)
    return QModelIndex();

  return createIndex(parentItem->row(), 0, parentItem);
}