知识点

   //虚函数声明virtual int rowCount(const QModelIndex& parent =QModelIndex())const;virtual int columnCount(const QModelIndex& parent =QModelIndex())const;QVariant data(const QModelIndex& index,int role)const;QVariant headerData(int section,Qt::Orientation orientation,int role)const;view.setModel(&modelEx);设置模型

modelex

modelex.h

#ifndef MODELEX_H
#define MODELEX_H
#include <QAbstractTableModel>
#include <QVector>
#include <QMap>
#include <QStringList>class ModelEx : public QAbstractTableModel
{
public:explicit ModelEx(QObject *parent = 0);//虚函数声明virtual int rowCount(const QModelIndex& parent =QModelIndex())const;virtual int columnCount(const QModelIndex& parent =QModelIndex())const;QVariant data(const QModelIndex& index,int role)const;QVariant headerData(int section,Qt::Orientation orientation,int role)const;
signals:public slots:private:QVector<short> army;QVector<short> weaponType;QMap<short,QString>armyMap;QMap<short,QString>weaponTypeMap;QStringList weapon;QStringList header;void populateModel();};
#endif // MODELEX_H

modelex.cpp

#include "modelex.h"ModelEx::ModelEx(QObject *parent):QAbstractTableModel(parent)
{armyMap[1] = tr("空军");armyMap[2] = tr("海军");armyMap[3] = tr("陆军");armyMap[4] = tr("海军和陆军");armyMap[5] = tr("海军和陆军2");weaponTypeMap[1] = tr("轰炸机");weaponTypeMap[2] = tr("战斗机");weaponTypeMap[3] = tr("坦克");weaponTypeMap[4] = tr("飞机");weaponTypeMap[5] = tr("炮弹");weaponTypeMap[6] = tr("舰艇");populateModel();}int ModelEx::rowCount(const QModelIndex &parent) const
{return army.size();
}int ModelEx::columnCount(const QModelIndex &parent) const
{return 4;
}QVariant ModelEx::data(const QModelIndex &index, int role) const
{if(!index.isValid()){return QVariant();}if(role ==Qt::DisplayRole){switch (index.column()) {case 0:return armyMap[army[index.row()]];break;case 1:return weaponTypeMap[weaponType[index.row()]];break;case 2:return weapon[index.row()];break;case 3:return weapon[index.row()];break;default:return QVariant();}}return QVariant();
}QVariant ModelEx::headerData(int section, Qt::Orientation orientation, int role) const
{if(role ==Qt::DisplayRole && orientation ==Qt::Horizontal){return header[section];}return QAbstractTableModel::headerData(section,orientation,role);
}void ModelEx::populateModel()
{header<<tr("军种")<<tr("种类")<<tr("武器")<<tr("武器1");army<<1<<2<<3<<4<<2<<4<<3<<1;weaponType<<1<<3<<5<<6<<2<<5<<2<<5;weapon<<tr("B-2")<<tr("普通")<<tr("特殊")<<tr("高级")<<tr("困难")<<tr("复杂")<<tr("困难2")<<tr("复杂2");
}

main.cpp

#include "modelex.h"
#include <QApplication>
#include <QTableView>int main(int argc, char *argv[])
{QApplication a(argc, argv);ModelEx modelEx;QTableView view;view.setModel(&modelEx);view.setWindowTitle(QObject::tr("使用模型"));view.resize(400,400);view.show();return a.exec();
}

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