How to remove a multiple selection of rows

[aguleo]

Hi
When using a QTableView and QSqlTableModel, how do i remove all selected rows?
Removing one is easy ...

model->removeRows(view->currentIndex().row(), 1);

What if there are multiple rows selected with SHIFT and CTRL ....

[ChrisW67]

You use the view's selectionModel() to get the selected rows (which may have nothing to do with the current index), sort them, and remove them from highest to lowest.

[aguleo]

If i have a 3 columns view and i select n lines like this:

QItemSelection selection( view->selectionModel()->selection() );
QModelIndexList indexes = selection.indexes();
QMessageBox msg;
msg.setInformativeText(QString::number(indexes.cou nt()));
msg.exec();
... i get a count of 3 * n !

How do i send only the row index to a list?

[ChrisW67]

Assuming the selection behaviour is SelectRows:

QModelIndexList selectedIndexes = view->selectionModel()->selectedRows();

Then you have a list of indexes in the first column for rows in the selection.
You could iterate over the indexes extracting the row() from each adding it to a QList<int>. Sort the list in descending order. Delete the rows.

Or you could just use the sort order provided by QModelIndex itself:


qSort(selectedIndexes.begin(), selectedIndexes.end(), qGreater<QModelIndex>());


If the selection behaviour is not SelectRows then call


QModelIndexList selectedIndexes = view->selectionModel()->selectedIndexes();

and build a list of unique row numbers by iterating over that list.