在QTreeview中使用QCombobox委派项

// 创建数据模型
QStandardItemModel *model = new QStandardItemModel();
treeView->setModel(model);

// 创建委派项
QComboBox *comboBox = new QComboBox();
comboBox->addItem("Option 1");
comboBox->addItem("Option 2");
QItemDelegate *delegate = new QItemDelegate();
delegate->setEditorData(comboBox);

// 设置委派项
treeView->setItemDelegateForColumn(columnIndex, delegate);

// 设置数据
QModelIndex index = model->index(row, columnIndex);
model->setData(index, QVariant::fromValue(comboBox));

// 保存用户选择的数据
void MyItemDelegate::setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) {
    QComboBox *comboBox = qobject_cast<QComboBox*>(editor);
    if (comboBox) {
        QString selectedOption = comboBox->currentText();
        model->setData(index, selectedOption);
    }
}