34.QT模型(表格绘制)

modellex.h

 1 #ifndef MODELEX_H
 2 #define MODELEX_H
 3 #include <QAbstractItemModel>
 4 #include <QVector>
 5 #include <QMap>
 6 #include <QStringList>
 7 #include <QWidget>
 8 
 9 
10 class modelex : public QAbstractTableModel
11 {
12 
13 public:
14     explicit modelex(QObject *parent = 0);
15 
16     virtual int rowCount(const QModelIndex &parent=QModelIndex()) const;
17     virtual int columnCount(const QModelIndex &parent=QModelIndex()) const;
18     QVariant data(const QModelIndex &index, int role) const;
19     QVariant headerData(int section, Qt::Orientation orientation, int role) const;
20 
21 private:
22     QVector<int> army;
23     QVector<int> weapon;
24     QMap<int,QString> armymap;
25     QMap<int,QString> weaponmap;
26 
27     QStringList weaponlist;
28     QStringList armylist;
29     QStringList header;
30 
31     void showModel();
32 };
33 
34 #endif // MODELEX_H

modelex.cpp

 1 #include "modelex.h"
 2 
 3 modelex::modelex(QObject *parent):QAbstractTableModel(parent)
 4 {
 5     armymap[1] ="空军";
 6     armymap[2] ="海军";
 7     armymap[3] ="陆军";
 8 
 9     weaponmap[1] = "AK47";
10     weaponmap[2] = "M16";
11     weaponmap[3] = "M18";
12     showModel();
13 }
14 
15 int modelex::rowCount(const QModelIndex &parent) const
16 {
17      return army.size();//行数
18 }
19 
20 int modelex::columnCount(const QModelIndex &parent) const
21 {
22    return 2;//列数
23 }
24 
25 //返回每一行每一列的数据
26 QVariant modelex::data(const QModelIndex &index, int role) const
27 {
28     if(!index.isValid())
29     {
30         return QVariant();
31     }
32     if(role == Qt::DisplayRole)
33     {
34         switch(index.column())
35         {
36             case 0:
37                 return armymap[army[index.row()]];
38                 break;
39             case 1:
40                 return armymap[weapon[index.row()]];
41                 break;
42             default:
43                 return QVariant();
44         }
45 
46     }
47     return QVariant();
48 }
49 
50 QVariant modelex::headerData(int section, Qt::Orientation orientation, int role) const
51 {
52     if(role == Qt::DisplayRole && Qt::Horizontal == orientation)
53     {
54         //返回表的开头
55         return header[section];
56     }
57     else
58     {
59         return QAbstractTableModel::headerData(section,orientation,role);
60     }
61 }
62 
63 void modelex::showModel()
64 {
65     header<<"兵种" <<"兵器";
66     //数字与字符串对应
67     army<<1<<2<<3<<2<<1;
68     weapon<<1<<2<<3<<2<<1;
69 }

main.cpp

 1 #include "widget.h"
 2 #include <QApplication>
 3 #include <QTableView>
 4 #include "modelex.h"
 5 
 6 int main(int argc, char *argv[])
 7 {
 8     QApplication a(argc, argv);
 9     //Widget w;
10     //w.show();
11     modelex m;
12     QTableView view;
13     view.setModel(&m);
14     view.show();
15     view.resize(800,600);
16 
17     return a.exec();
18 }

运行效果