There is a method
void QStandardItemModel::appendRow(QStandardItem * item)
in class QStandardItemModel. I cannot figure out where the item is appended, or who the item's parent is after appending?
And another method
bool QStandardItemModel::insertRow(int row, const QModelIndex & parent = QModelIndex())
shows the parent but which item will be appended to the parent?
The first question is easy. As the name says: Append. It is appended to a list or a tree, which has only one column.
The second one is difficult. This function is not directly about inserting items, but about the algorithm how to insert items. In a complicated tree this is not a necessarily trivial task. Adding nodes, changing the dimension of a tree. You have to implement this virtual method, when you have to create an editable tree. In that case making room for a new item and actually inserting the item are two different tasks.
