请问如何实现点击LineEdit，lineEdit下方会有备选框弹出可供选择 [复制链接]

如题。

QComboBox
将 editable 设置为 true

    search = new QLineEdit(this);
    search->setPlaceholderText(QStringLiteral("搜索:"));
    completer = new QCompleter(search);
    completer->setFilterMode(Qt::MatchContains);
    strlistModel = new QStringListModel;
    strlistModel->setStringList(QStringList{"111111","222222"});
    completer->setModel(strlistModel);
    completer->setCompletionMode(QCompleter::PopupCompletion);
    completer->setCaseSensitivity(Qt::CaseInsensitive);
    search->setCompleter(completer);