通过Delegate创建QCheckBox来实现的Check列，只有在该列进入编辑模式时才能够Check/Uncheck。这显然不是我们想要的，网上翻来翻去，在一个中看到了无需Delegate的实现方法，只需重写Model即可：

 

class MyModel : public QSqlQueryModel {

Q_OBJECT

public:

MyModel(QObject *parent = 0);

Qt::ItemFlags flags(const QModelIndex &index) const;

QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;

........

};

Qt::ItemFlags MyModel::flags(const QModelIndex &index) const {

Qt::ItemFlags flags = QSqlQueryModel::flags(index);

if (index.column() == aColWithCheckbox)

flags |= Qt::ItemIsUserCheckable;

else

flags |= Qt::ItemIsEditable;

return flags;

}

QVariant MyModel::data(const QModelIndex &index,  int role) const {

QVariant value = QSqlQueryModel::data(index, role);

if (role == Qt::CheckStateRole && index.column() == aColWithCheckbox)

return (QSqlQueryModel::data(index).toInt() != 0) ? Qt::Checked : Qt::Unchecked;

else

return value;

}

bool MyModel::setData( const QModelIndex & index, const QVariant & value, int role) 

{ 

    if(index.isValid() && role == Qt::CheckStateRole&&index.column()==0) 

    { 

        if(value.value<int>()==Qt::Checked) 

        { 

            m_config->setAutoRun(index.row(), true); 

        } 

        else 

        { 

            m_config->setAutoRun(index.row(), false); 

        } 

        emit dataChanged(index, index); 

        return true; 

    } 

    return false; 

}