Qtablewidget表格中添加单选框 c++代码实现

可以使用自定义委托来实现在QTableWidget中添加单选框。下面是一个简单的示例代码：

1. 创建一个自定义委托类：

class RadioButtonDelegate : public QStyledItemDelegate {
public:
    QWidget *createEditor(QWidget *parent, const QStyleOptionViewItem &option, const QModelIndex &index) const override {
        Q_UNUSED(option);
        if (index.column() == 0) {
            QRadioButton *radioButton = new QRadioButton(parent);
            return radioButton;
        } else {
            return QStyledItemDelegate::createEditor(parent, option, index);
        }
    }

    void setEditorData(QWidget *editor, const QModelIndex &index) const override {
        if (QRadioButton *radioButton = qobject_cast<QRadioButton *>(editor)) {
            bool value = index.model()->data(index, Qt::EditRole).toBool();
            radioButton->setChecked(value);
        } else {
            QStyledItemDelegate::setEditorData(editor, index);
        }
    }

    void setModelData(QWidget *editor, QAbstractItemModel *model, const QModelIndex &index) const override {
        if (QRadioButton *radioButton = qobject_cast<QRadioButton *>(editor)) {
            model->setData(index, radioButton->isChecked(), Qt::EditRole);
        } else {
            QStyledItemDelegate::setModelData(editor, model, index);
        }
    }

    void updateEditorGeometry(QWidget *editor, const QStyleOptionViewItem &option, const QModelIndex &index) const override {
        Q_UNUSED(index);
        editor->setGeometry(option.rect);
    }
};

2. 在QTableWidget中设置委托：

QTableWidget *tableWidget = new QTableWidget(this);
tableWidget->setRowCount(3);
tableWidget->setColumnCount(2);

// 设置第一列为单选框
tableWidget->setItemDelegateForColumn(0, new RadioButtonDelegate());

// 添加表格项
for (int row=0; row<3; row++) {
    QTableWidgetItem *item1 = new QTableWidgetItem();
    item1->setFlags(item1->flags() & ~Qt::ItemIsEditable); // 第一列不可编辑
    tableWidget->setItem(row, 0, item1);

    QTableWidgetItem *item2 = new QTableWidgetItem(QString("Item %1").arg(row));
    tableWidget->setItem(row, 1, item2);
}

这样就可以在QTableWidget的第一列中添加单选框了。