递归遍历QTreeView+QStandrdItemModel

void iterateTreeViewNodes(const QModelIndex& parentIndex, QStandardItemModel* model, QVector<QStandardItem*>& items)
{
	int rowCount = model->rowCount(parentIndex);
	int columnCount = model->columnCount(parentIndex);	
    for (int row = 0; row < rowCount; ++row) {
		for (int column = 0; column < columnCount; ++column) {
			QModelIndex index = model->index(row, column, parentIndex);
			QStandardItem* item = model->itemFromIndex(index);
			items.push_back(item);
			iterateTreeViewNodes(index, model, items);
		}
	}
}