QAbstractTableModel的使用

#include "mainwindow.h"
#include <QApplication>
#include "modelex.h"
#include <QTableView>

int main(int argc, char *argv[])
{
QApplication a(argc, argv);
ModelEx modelEx;
QTableView view;
view.setModel(&modelEx);
view.setWindowTitle(QObject::tr("modelEx"));
view.resize(400,400);
view.show();

return a.exec();
}

#ifndef MODELEX_H
#define MODELEX_H

#include <QAbstractTableModel>
#include <QVector>
#include <QMap>
#include <QStringList>

class ModelEx : public QAbstractTableModel
{
Q_OBJECT
public:
explicit ModelEx(QObject *parent = 0);
//获取表格的行数
virtual int rowCount(const QModelIndex &parent=QModelIndex()) const;
//获取表格的列数
virtual int columnCount(const QModelIndex &parent=QModelIndex()) const;
//获取某一格子的内容
QVariant data(const QModelIndex &index, int role) const;
//返回某一列表头的内容
QVariant headerData(int section, Qt::Orientation orientation, int role) const;

signals:

public slots:
private:
QVector<short> army;//表格第一列内容
QVector<short> weaponType;//表格第二列内容
QStringList  weapon;//表格第三列内容

QMap<short,QString> armyMap;//表格第一列内容存储的值
QMap<short,QString> weaponTypeMap;//表格第二列内容存储的值

QStringList  header;//表格头部内容

void populateModel();
};

#endif // MODELEX_H

#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("海军陆战队");

weaponTypeMap[1]=tr("轰炸机");
weaponTypeMap[2]=tr("战斗机");
weaponTypeMap[3]=tr("航空母舰");
weaponTypeMap[4]=tr("驱逐舰");
weaponTypeMap[5]=tr("直升机");
weaponTypeMap[6]=tr("坦克");
weaponTypeMap[7]=tr("两栖攻击舰");
weaponTypeMap[8]=tr("两栖战车");
populateModel();
}

void ModelEx::populateModel()
{
header<<tr("军种")<<tr("种类")<<tr("武器");
army<<1<<2<<3<<4<<2<<4<<3<<1;
weaponType<<1<<3<<5<<7<<4<<8<<6<<2;
weapon<<tr("B-2")<<tr("尼米兹级")<<tr("阿帕奇")<<tr("黄蜂级")<<tr("阿利伯克级")<<tr("AAAV")<<tr("M1A1")<<tr("F-22");
}

int ModelEx::columnCount(const QModelIndex &parent) const
{
return 3;
}

int ModelEx::rowCount(const QModelIndex &parent) const
{
return army.size();
}

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(
4000
)]];
break;
case 2:
return weapon[index.row()];
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);
}