Change Row Label Start Index (vertical header) in QtableView - c++

Question

While displaying data, on a QTableView , due to an internal reason, i cannot display the first row and hence have to hide it, using
(qtableobj)->hideRow(0);
The problem is that, now the row labels start from 2.
How is it possible to start the index from 1, while keeping the first row hidden ?
Thanks.

Answer 1

You can try to involve the QSortFilterProxyModel that will filter out the first row in your model.
The code could look like:
class FilterModel : QSortFilterProxyModel
{
[..]
protected:
bool filterAcceptsRow(int sourceRow, const QModelIndex & sourceParent) const
{
QModelIndex index = sourceModel()->index(sourceRow, 0, sourceParent);
if (index.row() == 0) // The first row to filter.
return false;
else
return QSortFilterProxyModel::filterAcceptsRow(sourceRow, sourceParent);
}
}
Finally you need to set this model to your table view:
QTableView *table = new QTableView;
MyItemModel *sourceModel = new MyItemModel;
QSortFilterProxyModel *proxyModel = new FilterModel;
proxyModel->setSourceModel(sourceModel);
table->setModel(proxyModel);
UPDATE
Since the issue is in how the header view displays row numbers, here is the alternative solution which based on special handling of header data in the model:
class Model : public QAbstractTableModel
{
public:
[..]
virtual QVariant headerData(int section, Qt::Orientation orientation,
int role = Qt::DisplayRole) const
{
if (role == Qt::DisplayRole) {
if (orientation == Qt::Vertical) {
// Decrease the row number value for vertical header view.
return section - 1;
}
}
return QAbstractTableModel::headerData(section, orientation, role);
}
[..]
};
Set up the table view with the hidden first row.
QTableView *table = new QTableView;
Model *sourceModel = new Model;
table->setModel(sourceModel);
table->hideRow(0);
table->show();