Problem with updating QTreeView with QAbstractITemModel

[Mohsin]

Hi everyone,


I am working on the "Simple Tree Model" example. https://het.as.utexas.edu/HET/Softwa...treemodel.html

However, the data in my QTreeView is not being updated.

If somebody can tell that where I am making a mistake that would be great?

#include <QMainWindow>
#include <QtGui>
#include <QTreeView>
#include "treemodel.h"
#include "mainwindow.h"
#include "ui_mainwindow.h"
 
MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    QFile file("/hdd2/users/mohsinali/Inc_Training_Utility/0.sampleFiles/Default.txt");
    file.open(QIODevice::ReadOnly);
    TreeModel model(file.readAll());
    file.close();
    ui->treeView->setModel(&model);
    ui->treeView->setWindowTitle("Simple Tree Model");
    setCentralWidget(ui->treeView);
}

#include <QMainWindow>
#include <QtGui>
#include <QTreeView>
#include "treemodel.h"
#include "mainwindow.h"
#include "ui_mainwindow.h"

MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
{
    ui->setupUi(this);
    QFile file("/hdd2/users/mohsinali/Inc_Training_Utility/0.sampleFiles/Default.txt");
    file.open(QIODevice::ReadOnly);
    TreeModel model(file.readAll());
    file.close();
    ui->treeView->setModel(&model);
    ui->treeView->setWindowTitle("Simple Tree Model");
    setCentralWidget(ui->treeView);
}

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[d_stranz]

Line 15 - think about what happens to this variable that you create on the stack when the MainWindow constructor exits.