5.listview(QStringList QStringListModel)

• UI
• 
• mainwindow.h

   #ifndef MAINWINDOW_H
   #define MAINWINDOW_H
  
   #include <QMainWindow>
   #include <QStringListModel>
  
   namespace Ui {
   class MainWindow;
   }
  
   class MainWindow : public QMainWindow
   {
       Q_OBJECT
  
   public:
       explicit MainWindow(QWidget *parent = );
       ~MainWindow();
  
   private slots:
       //按下按钮
       void on_pushButton_clicked();
  22 　　//combox改变
  23     void on_comboBox_currentIndexChanged(int index);
  
   private:
       Ui::MainWindow *ui;
  27     //设置列表
  28     QStringList *sl;
  29     //设置模式,显示列表
  30     QStringListModel *slm;
   };
  
   #endif // MAINWINDOW_H

• mainwindow.cpp

   #include "mainwindow.h"
   #include "ui_mainwindow.h"
   #include <QStringListModel>
  
   MainWindow::MainWindow(QWidget *parent) :
       QMainWindow(parent),
       ui(new Ui::MainWindow)
   {
       ui->setupUi(this);
  10     sl = new QStringList();
  11     sl->append("hello1");
  12     sl->append("hello2");
  13     sl->append("hello3");
  14     sl->append("hello4");
  15     //创建字符串模式
  16     slm = new QStringListModel(this);
  17     slm->setStringList(*sl);
  18     //显示
  19     ui->listView->setModel(slm);
  20
  21     //设置combox选项
  22     ui->comboBox->insertItem(0,"hello1","hello1");
  23     ui->comboBox->insertItem(1,"hello2","hello2");
  24     ui->comboBox->insertItem(2,"hello3","hello3");
  25     ui->comboBox->insertItem(3,"hello4","hello4");
  
   }
  
   MainWindow::~MainWindow()
   {
       delete ui;
   }
  
   void MainWindow::on_pushButton_clicked()
   {
  
       QString qstr;
  39     qstr = ui->lineEdit->text();
  40     sl->append(qstr);
  41     //模式设置字符串
  42     slm->setStringList(*sl);
  43     //显示
  44     ui->listView->setModel(slm);
   }
  
   void MainWindow::on_comboBox_currentIndexChanged(int index)
   {
       //获取当前数据
  50     QString myqstr=ui->comboBox->currentText();
  51     ui->lineEdit->setText(myqstr);
   }

• main.cpp

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