QModelIndex TreeModel::index(int row, int column, const QModelIndex &parent) const
{
if (row < 0 || row >= rowCount(parent) || column < 0 || column >= columnCount(parent))
QModelIndex TreeModel::index(int row, int column, const QModelIndex &parent) const
{
if (row < 0 || row >= rowCount(parent) || column < 0 || column >= columnCount(parent))