34.QT模型(表格绘制)

• modellex.h

   #ifndef MODELEX_H
   #define MODELEX_H
   #include <QAbstractItemModel>
   #include <QVector>
   #include <QMap>
   #include <QStringList>
   #include <QWidget>
  
   class modelex : public QAbstractTableModel
   {
  
   public:
       explicit modelex(QObject *parent = );
  
       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;
  
   private:
       QVector<int> army;
       QVector<int> weapon;
       QMap<int,QString> armymap;
       QMap<int,QString> weaponmap;
  
       QStringList weaponlist;
       QStringList armylist;
       QStringList header;
  
       void showModel();
   };
  
   #endif // MODELEX_H

• modelex.cpp

   #include "modelex.h"
  
   modelex::modelex(QObject *parent):QAbstractTableModel(parent)
   {
       armymap[] ="空军";
       armymap[] ="海军";
       armymap[] ="陆军";
  
       weaponmap[] = "AK47";
       weaponmap[] = "M16";
       weaponmap[] = "M18";
       showModel();
   }
  
   int modelex::rowCount(const QModelIndex &parent) const
   {
        return army.size();//行数
   }
  
   int modelex::columnCount(const QModelIndex &parent) const
   {
      return ;//列数
   }
  
   //返回每一行每一列的数据
   QVariant modelex::data(const QModelIndex &index, int role) const
   {
       if(!index.isValid())
       {
           return QVariant();
       }
       if(role == Qt::DisplayRole)
       {
           switch(index.column())
           {
               case :
                   return armymap[army[index.row()]];
                   break;
               case :
                   return armymap[weapon[index.row()]];
                   break;
               default:
                   return QVariant();
           }
  
       }
       return QVariant();
   }
  
   QVariant modelex::headerData(int section, Qt::Orientation orientation, int role) const
   {
       if(role == Qt::DisplayRole && Qt::Horizontal == orientation)
       {
           //返回表的开头
           return header[section];
       }
       else
       {
           return QAbstractTableModel::headerData(section,orientation,role);
       }
   }
  
   void modelex::showModel()
   {
       header<<"兵种" <<"兵器";
       //数字与字符串对应
       army<<<<<<<<<<;
       weapon<<<<<<<<<<;
   }

• main.cpp

   #include "widget.h"
   #include <QApplication>
   #include <QTableView>
   #include "modelex.h"
  
   int main(int argc, char *argv[])
   {
       QApplication a(argc, argv);
       //Widget w;
       //w.show();
       modelex m;
       QTableView view;
       view.setModel(&m);
       view.show();
       view.resize(,);
  
       return a.exec();
   }

运行效果