回帖：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);