QTableWidget - Select multiple rows.

[wally]

Hello,

I am looking to select multiple rows in a tablewidget at once, as if the user had Ctrl+clicked or Shift-clicked on the vertical headers.

I have the selection mode set to QAbstractItemView::ExtendedSelection and can perform this operation by clicking.

Using selectRow(int) clears the previous selection. Looking through the source code, selectRow in QTableView calls QTableViewPrivate::selectRow(int, bool).

My guess is that I would have to reimplement QTableView::selectRow() but I'm not quite sure how to do that to get the behaviour I want. I'm working on it in the mean time but if anyone has any suggestions that would be great.

Edit:
I am currently using Python and PyQt4 for most of my development but I am comfortable with C++ as well.

[wally]

Hello Everyone,

Turns out I figured out how to do what I want. I don't know if this is the most elegant way to perform this action but it works. I'm just going to put the idea into a method called "selectRows" in my subclassed table.

Turns out my problem was using QItemSelectionModel::Rows instead of QItemSelectionModel::Select.

#include <QtGui/QApplication>
#include <QtGui/QTableWidget>
#include <QtGui/QAbstractItemView>
 
int main(int argc, char *argv[])
{
   QApplication a(argc, argv);
   QTableWidget w(10,3);
   QItemSelectionModel *selectionModel = w.selectionModel();
   w.selectRow(1);
   QItemSelection itemSelection = selectionModel->selection();
   w.selectRow(3);
   itemSelection.merge(selectionModel->selection(), QItemSelectionModel::Select);
   w.selectRow(5);
   itemSelection.merge(selectionModel->selection(), QItemSelectionModel::Select);
 
   selectionModel->clearSelection();
   selectionModel->select(itemSelection,QItemSelectionModel::Select);
   w.show();    // ideally, upon show rows 2,4 and 6 should appear selected.
                       // now, all three rows are selected.
   w.resize(350,400);
   return a.exec();
}

#include <QtGui/QApplication>
#include <QtGui/QTableWidget>
#include <QtGui/QAbstractItemView>

int main(int argc, char *argv[])
{
   QApplication a(argc, argv);
   QTableWidget w(10,3);
   QItemSelectionModel *selectionModel = w.selectionModel();
   w.selectRow(1);
   QItemSelection itemSelection = selectionModel->selection();
   w.selectRow(3);
   itemSelection.merge(selectionModel->selection(), QItemSelectionModel::Select);
   w.selectRow(5);
   itemSelection.merge(selectionModel->selection(), QItemSelectionModel::Select);

   selectionModel->clearSelection();
   selectionModel->select(itemSelection,QItemSelectionModel::Select);
   w.show();    // ideally, upon show rows 2,4 and 6 should appear selected.
                       // now, all three rows are selected.
   w.resize(350,400);
   return a.exec();
}

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[SunnySan]

what about using the designer go to the properties of the QtableWidget
and for selectionbehavior , SelectRows is active.