Custom context menu in QTreeView

[ttvo]

I added

connect(model, SIGNAL(itemChanged(QStandardItem * item)), SLOT(myItemChanged(QStandardItem *item)));
 
// where QStandardItemModel *model = new QStandardItemModel();

connect(model, SIGNAL(itemChanged(QStandardItem * item)), SLOT(myItemChanged(QStandardItem *item)));

// where QStandardItemModel *model = new QStandardItemModel();

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from my MainWindow (inherits from QMainWindow) and

void MainWindow::myItemChanged(QStandardItem *item)
{
  changeItemState(item);
}
 
void MainWindow::changeItemState(QStandardItem *item)
{
  if (!item)
    return;
  for (int i=0; i<item->rowCount(); ++i) {
    QStandardItem *child = item->child(i);
    child->setCheckable(item->checkState());
    changeItemState(child);
  }
}

void MainWindow::myItemChanged(QStandardItem *item)
{
  changeItemState(item);
}

void MainWindow::changeItemState(QStandardItem *item)
{
  if (!item)
    return;
  for (int i=0; i<item->rowCount(); ++i) {
    QStandardItem *child = item->child(i);
    child->setCheckable(item->checkState());
    changeItemState(child);
  }
}

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similar to your example but the two methods weren't invoked at all when I toggle the checkbox.

[ttvo]

I added

connect(model, SIGNAL(itemChanged(QStandardItem * item)), SLOT(myItemChanged(QStandardItem *item)));
 
// where QStandardItemModel *model = new QStandardItemModel();

connect(model, SIGNAL(itemChanged(QStandardItem * item)), SLOT(myItemChanged(QStandardItem *item)));

// where QStandardItemModel *model = new QStandardItemModel();

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The correct code is:

connect(model, SIGNAL(itemChanged(QStandardItem * )), SLOT(myItemChanged(QStandardItem *)));

connect(model, SIGNAL(itemChanged(QStandardItem * )), SLOT(myItemChanged(QStandardItem *)));

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