7.treeview

• ui
• 
• mainwindow.h

   #ifndef MAINWINDOW_H
   #define MAINWINDOW_H
  
   #include <QMainWindow>
   #include <QStringData>
   #include <QStringList>
   #include <QStringListModel>
  
   namespace Ui {
   class MainWindow;
   }
  
   class MainWindow : public QMainWindow
   {
       Q_OBJECT
  
   public:
       explicit MainWindow(QWidget *parent = );
       ~MainWindow();
  
       void inittree();
  
   private slots:
       void on_pushButton_clicked();
  
   private:
       Ui::MainWindow *ui;
  28     QStringListModel *slm;
  29     QStringList *sl;
   };
  
   #endif // MAINWINDOW_H

• mainwindow.cpp

   #include "mainwindow.h"
   #include "ui_mainwindow.h"
  
   MainWindow::MainWindow(QWidget *parent) :
       QMainWindow(parent),
       ui(new Ui::MainWindow)
   {
       ui->setupUi(this);
       inittree();
   }
  
   MainWindow::~MainWindow()
   {
       delete ui;
   }
  
  17 //创建一个树
  18 void MainWindow::inittree()
  19 {
  20     ui->treeWidget->clear();
  21     //初始化
  22     QTreeWidgetItem *group1 = new QTreeWidgetItem(ui->treeWidget);
  23     group1->setText(0,"父1");
  24
  25     QTreeWidgetItem *sub1 = new QTreeWidgetItem(group1);
  26     QTreeWidgetItem *sub2 = new QTreeWidgetItem(group1);
  27     QTreeWidgetItem *sub3 = new QTreeWidgetItem(group1);
  28     sub1->setText(0,"子1");
  29     sub2->setText(0,"子2");
  30     sub3->setText(0,"子3");
  31
  32     QTreeWidgetItem *ssub1 = new QTreeWidgetItem(sub1);
  33     QTreeWidgetItem *ssub2 = new QTreeWidgetItem(sub1);
  34     QTreeWidgetItem *ssub3 = new QTreeWidgetItem(sub1);
  35     ssub1->setText(0,"孙1");
  36     ssub2->setText(0,"孙2");
  37     ssub3->setText(0,"孙3");
  38
  39     QTreeWidgetItem *sssub1 = new QTreeWidgetItem(sub2);
  40     QTreeWidgetItem *sssub2 = new QTreeWidgetItem(sub2);
  41     QTreeWidgetItem *sssub3 = new QTreeWidgetItem(sub2);
  42     sssub1->setText(0,"孙1");
  43     sssub2->setText(0,"孙2");
  44     sssub3->setText(0,"孙3");
  45
  46     QTreeWidgetItem *ssssub1 = new QTreeWidgetItem(sub3);
  47     QTreeWidgetItem *ssssub2 = new QTreeWidgetItem(sub3);
  48     QTreeWidgetItem *ssssub3 = new QTreeWidgetItem(sub3);
  49     ssssub1->setText(0,"孙1");
  50     ssssub2->setText(0,"孙2");
  51     ssssub3->setText(0,"孙3");
  52 }
  
   void MainWindow::on_pushButton_clicked()
   {
       //模型
  57     slm = new QStringListModel(this);
  58     //列表
  59     sl = new QStringList();
  60     //迭代器遍历树
  61     QTreeWidgetItemIterator it(ui->treeWidget);
  62     while(*it)
  63     {
  64         sl->append((*it)->text(0));
  65         ++it;
  66     }
  67
  68     //模型链接列表
  69     slm->setStringList(*sl);
  70     ui->listView->setModel(slm);
   }