介绍如何给Qt表格添加代理

#include "Model.h" //Model Model::Model(int iTotalCol, QStringList qstrlstHeader, QList<int> lstNonEditableCols, QObject *parent) : QAbstractTableModel(parent), m_lstNonEditableCols(lstNonEditableCols), m_iTotalCol(iTotalCol), m_qstrlstHeader(qstrlstHeader) { } int Model::rowCount(const QModelIndex &) const { return m_data.size(); } int Model::columnCount(const QModelIndex &) const { return m_iTotalCol; } QVariant Model::data(const QModelIndex &index, int role) const { int i = index.row(), j = index.column(); if ((i >= 0) && (i < m_data.size())) { if(m_data.at(i).size() > j) { if(role == Qt::DisplayRole) { //m_data的类型是QList<QStringList>，每一个QStringList对应表格里一行数据 //m_data.at(i).at(j)对应的就是第i行，第j列的数据 return m_data.at(i).at(j); } else if(role == Qt::TextAlignmentRole) return Qt::AlignCenter; else { } } else { return QString(""); } } else { } return QVariant(); } QVariant Model::headerData(int section, Qt::Orientation orientation, int role) const { if(role == Qt::DisplayRole) { if(orientation == Qt::Horizontal)//横向排列的标题栏，也就是各个列的标题 { if(m_qstrlstHeader.size() > section) return m_qstrlstHeader.at(section); else { return QString(""); } } else { //纵向排列的标题栏，也就是各个行的标题 return QString(""); } } else if(role == Qt::TextAlignmentRole) { //文字对齐方式设置为居中对齐 return Qt::AlignCenter; } else { } return QAbstractTableModel::headerData(section, orientation, role); } void Model::vSetData(QList<QStringList> & lstData) { m_data.clear(); m_data.append(lstData); //发出dataChanged信号，界面上才更新表格内容 emit dataChanged(createIndex(0,0), createIndex(0, columnCount()-1)); } Qt::ItemFlags Model::flags(const QModelIndex &index) const { if(m_lstNonEditableCols.contains(index.column())) //假如index对应的列是不可编辑的列 return QAbstractTableModel::flags(index); else //假如index对应的列是可编辑的列，就给它添加ItemIsEditable属性 return Qt::ItemIsEditable | QAbstractTableModel::flags(index); } bool Model::setData(const QModelIndex &index, const QVariant &value, int role) { if(role == Qt::EditRole) { //编辑单元格之后，用编辑结果更新对应的m_data int row = index.row(), col = index.column(); QStringList qstrlst = m_data.at(row); qstrlst.replace(col, value.toString()); m_data.replace(row, qstrlst); } return true; }