本文共 3282 字，大约阅读时间需要 10 分钟。

操作系统：UOS. 

main.cpp

#include "mainwindow.h"#include 
   
    #include
    
     #include
     
      #include
      
       #include
       
        int main(int argc, char *argv[]){    QApplication a(argc, argv);    MainWindow w;    w.show();    return a.exec();}
       
      
     
    
   

mainwindow.h

#ifndef MAINWINDOW_H#define MAINWINDOW_H#include 
   
    #include
    
     #include
     
      #include
      
       #include
       
        #include
        
         #include
         
          class MainWindow : public QMainWindow{ Q_OBJECTpublic: MainWindow(QWidget *parent = 0); ~MainWindow(); void updatedata();private: ModelEx *modelEx; QTableView *view;};#endif // MAINWINDOW_H
         
        
       
      
     
    
   

mainwindow.cpp

#include "mainwindow.h"MainWindow::MainWindow(QWidget *parent)    : QMainWindow(parent){    QWidget *widget = new QWidget(this); //   widget->resize(1200,1200);    modelEx =new ModelEx();    QGridLayout *mainLayout= new QGridLayout(widget);    view = new QTableView(this);    view->setModel(modelEx);    view->setWindowTitle(QObject::tr("modelEx"));    view->resize(500,500);    QPushButton *btn = new QPushButton(this);    btn->setText(tr("按钮"));    mainLayout->addWidget(view,0,1);    mainLayout->addWidget(btn,1,1);    mainLayout->setSpacing(10);    connect(btn, &QPushButton::clicked,this,&MainWindow::updatedata);    this->setCentralWidget(widget);    this->resize(700,700);    //setLayout(mainLayout);    //mainLayout.show();}void MainWindow::updatedata(){        qDebug() <<"tr";        qDebug() <<"rowCount:"<< modelEx->rowCount(QModelIndex());        qDebug() <<"columnCount:"<< modelEx->columnCount(QModelIndex());        modelEx->army<<1<<2<<3<<4<<2<<1<<4<<3;        modelEx->weaponType<<1<<2<<3<<6<<7<<4<<5<<8;        modelEx->weapon<
   
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        <
        
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           setModel(NULL); view->setModel(modelEx);}MainWindow::~MainWindow(){}
          
         
        
       
      
     
    
   

自定义model

modelex.h

#ifndef MODELEX_H#define MODELEX_H#include
   
    #include
    
     #include
     
      #include
      
       class ModelEx : public QAbstractTableModel{public:    explicit ModelEx(QObject *parent=nullptr);    virtual int rowCount(const QModelIndex &parent=QModelIndex()) const;    // QAbstractItemModel interfacepublic:    int columnCount(const QModelIndex &parent) const;    QVariant data(const QModelIndex &index, int role) const;    // QAbstractItemModel interfacepublic:    QVariant headerData(int section, Qt::Orientation orientation, int role) const;public:    QVector
       
         army;    QVector
        
          weaponType; QMap
         
           armyMap; QMap
          
            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("陆战对");    weaponTypeMap[1] = tr("轰炸机1");    weaponTypeMap[2] = tr("轰炸机2");    weaponTypeMap[3] = tr("轰炸机3");    weaponTypeMap[4] = tr("轰炸机4");    weaponTypeMap[5] = tr("轰炸机5");    weaponTypeMap[6] = tr("轰炸机6");    weaponTypeMap[7] = tr("轰炸机7");    weaponTypeMap[8] = tr("轰炸机8");    populateModel();}void ModelEx::populateModel(){    header<
   
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运行结果如下:

点击按钮可以动态添加数据