Selection start position

There is currently no separate function for the start index of the selection. For example QListwidget have got five functions that can change current position/

setCurrentIndex(const QModelIndex &)
setCurrentItem(QListWidgetItem *)
setCurrentItem(QListWidgetItem *, QItemSelectionModel::SelectionFlags)
setCurrentRow(int)
setCurrentRow(int, QItemSelectionModel::SelectionFlags)

But only one can change current selection start index. This function is setCurrentIndex defined in (void QAbstractItemView::setCurrentIndex(const QModelIndex &index)).

it would be great if you add function setCurrentSelectionStartIndex(const QModelIndex &index)
wich can change currentSelectionStartIndex (defined in QAbstractItemView)

it is necessary for implement some internal selection mechanism.

Now it is very difficult to do!

thank you!