QAbstractTableModel的使用
程序
ModelEx继承自QAbstractTableModel类
ModelEx函数(建立模型)
.h
#ifndef MODELEX_H
#define MODELEX_H
#include <QAbstractTableModel>
class ModelEx : public QAbstractTableModel
{
public:
ModelEx(QObject*parent=0);
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
.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//控制列数
{ return 3; }
int ModelEx::rowCount(const QModelIndex &parent) const//控制行数
{
return army.size();
}
QVariant ModelEx::data(const QModelIndex &index, int role) const//控制列数局
{
if(!index.isValid())//所选不是有效的停止
return QVariant();
if(role==Qt::DisplayRole) //条目显示文字
{
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()];
default:
return QVariant();
}
}
return QVariant();
}
QVariant ModelEx::headerData(int section, Qt::Orientation orientation, int role) const//控制列标题
{
if(role==Qt::DisplayRole&&orientation==Qt::Horizontal)
return header[section];
return QAbstractTableModel::headerData(section,orientation,role);
}
main函数(通过视图展示模型)
#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();
//MainWindow w;
//w.show();
return a.exec();
}