QTableView中嵌入复选框CheckBox

       第二种方法：设置QAbstractTableModel的flags()函数法

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，在一个国外论坛中看到了无需Delegate的实现方法，只需重写Model即可：

主要是修改两个函数：

//设置某一列为可选角色，绘画出QCheckBox

2.在StudentInfoModel .h头文件中的主要代码：
class StudentInfoModel : public QAbstractTableModel
{Q_OBJECT
public:StudentInfoModel(const int totalColumn, const int aColumnNumWithChechBox = 0, QObject *parent = 0):totalColumn(totalColumn),colNumberWithCheckBox(aColumnNumWithChechBox),QAbstractTableModel(parent) {rowCheckStateMap.clear();};
public:int rowCount(const QModelIndex &parent = QModelIndex()) const;int columnCount(const QModelIndex &parent = QModelIndex()) const;QVariant data(const QModelIndex &index, int role = Qt::DisplayRole) const;QVariant headerData(int section, Qt::Orientation orientation, int role = Qt::DisplayRole) const;Qt::ItemFlags flags(const QModelIndex &index) const;bool setData(const QModelIndex &index, const QVariant &value, int role);public:void AddStudentInfo(const StudentInfo &studentInfo);signals:void StudentInfoIsChecked(const StudentInfo &studentInfo);private:typedef QVector<StudentInfo> StudentInfos;StudentInfos studentInfos;int totalColumn;int colNumberWithCheckBox;QMap<int, Qt::CheckState> rowCheckStateMap;
};3.在StudentInfoModel.cpp文件中的主要代码如下：
QVariant StudentInfoModel::data( const QModelIndex &index, int role ) const
{if (role == Qt::DisplayRole) { if (index.column() == 0) return QString::number(index.row()+1); if (index.column() == 1) return studentInfos[index.row()].stuNumber; if (index.column() == 2)return studentInfos[index.row()].stuName; if (index.column() == 3)return studentInfos[index.row()].stuID; if (index.column() == 4)return studentInfos[index.row()].stuPhoneNumber;if (index.column() == 5) return studentInfos[index.row()].department; if (index.column() == 6) return studentInfos[index.row()].stuDescription; } if (role == Qt::CheckStateRole) { if (index.column() == colNumberWithCheckBox) { if (rowCheckStateMap.contains(index.row())) return rowCheckStateMap[index.row()] == Qt::Checked ? Qt::Checked : Qt::Unchecked; return Qt::Unchecked; } } return QVariant();
}Qt::ItemFlags StudentInfoModel::flags( const QModelIndex &index ) const
{if(!index.isValid())return 0;if (index.column() == colNumberWithCheckBox)return Qt::ItemIsEnabled | Qt::ItemIsSelectable | Qt::ItemIsUserCheckable;return  Qt::ItemIsEnabled | Qt::ItemIsSelectable;
}bool StudentInfoModel::setData( const QModelIndex &index, const QVariant &value, int role )
{if(!index.isValid())return false;if (role == Qt::CheckStateRole && index.column() == colNumberWithCheckBox){if (value == Qt::Checked) //{rowCheckStateMap[index.row()] = Qt::Checked; if(studentInfos.size() > index.row())emit StudentInfoIsChecked(studentInfos[index.row()]);}else{rowCheckStateMap[index.row()] = Qt::Unchecked;} }return true;
}

【Qt】QTableView中嵌入复选框CheckBox 的四种方法总结