How to catch the moment when an editor is created in QComboBox?

Question

Qt

We write a component based on QComboBox. We are trying to make it at least a little universal - and for this you need to register the installation of events. Including the lineEdit()->textEdited event. Initially this lineEdit is not present, it appears when the combobox becomes editable. What is the best way to solve this?

Answer 1

Again, you have to answer on your own.

void TimedWideComboBox::connectToEditor()
{
    if (!lineEdit())
        return;
    connect(lineEdit(), &QLineEdit::textEdited, this, &This::origDataChanged);
}

bool TimedWideComboBox::event(QEvent* ev)
{
    bool b = Super::event(ev);
    switch (ev->type()) {
    case QEvent::ChildAdded: {
            auto ev1 = static_cast<QChildEvent*>(ev);
            if (ev1->child() == lineEdit()) {
                connectToEditor();
                return true;
            }
        } break;
    default:;
    }
    return b;
}