[QTableView] Some cells and column headers not accessible (editable)

[psychonaut]

Hello,
I have a problem with QTableView and QSqlRelationalTableModel. The problem is that few cells and column headers are not editable. It's even not clickable.
The following are the conditions:

- QTableView
- QSqlRelationalTableMode
- Subclassed QSortFilterProxyModel
- QSqlRelationalDelegate

- QTableView
- QSqlRelationalTableMode
- Subclassed QSortFilterProxyModel
- QSqlRelationalDelegate

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Thanks in advice! I hope I didn't forget anything, but if anything is missing, just ask!

Edit: Maybe I should post some more information:

model = new QSqlRelationalTableModel( tableView );
model->setTable("Protokoll");
proxy = new proxymodel(tableView);
 
// ------
 
model->setRelation(12,QSqlRelation("Status", "ID", "Status"));
 
model->setEditStrategy(QSqlTableModel::OnFieldChange);
tableView->setSelectionMode(QTableView::SingleSelection);
tableView->setSelectionBehavior(QTableView::SelectRows);
 
 
tableView->setEditTriggers(QAbstractItemView::DoubleClicked);
proxy->setSourceModel(model);
 
tableView->setModel(proxy);
tableView->hideColumn(0);
tableView->setItemDelegate(new QSqlRelationalDelegate(this));
 
tableView->setSortingEnabled(true);
model->select();

model = new QSqlRelationalTableModel( tableView );
model->setTable("Protokoll");
proxy = new proxymodel(tableView);

// ------

model->setRelation(12,QSqlRelation("Status", "ID", "Status"));

model->setEditStrategy(QSqlTableModel::OnFieldChange);
tableView->setSelectionMode(QTableView::SingleSelection);
tableView->setSelectionBehavior(QTableView::SelectRows);


tableView->setEditTriggers(QAbstractItemView::DoubleClicked);
proxy->setSourceModel(model);

tableView->setModel(proxy);
tableView->hideColumn(0);
tableView->setItemDelegate(new QSqlRelationalDelegate(this));

tableView->setSortingEnabled(true);
model->select();

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