code_app/app/upgrade/mainwindow.cpp

#include "mainwindow.h"
#include "ui_mainwindow.h"
#include "HGUpgrade.h"

MainWindow::MainWindow(const std::string &appName, const std::string& pkgPath, QWidget *parent)
    : QMainWindow(parent)
    , ui(new Ui::MainWindow)
    , m_appName(appName)
    , m_pkgPath(pkgPath)
    , m_thread(nullptr)
{
    ui->setupUi(this);

    setWindowTitle(tr("Installation in progress, please wait..."));
    setWindowFlags(Qt::CustomizeWindowHint | Qt::WindowTitleHint | Qt::WindowMinMaxButtonsHint);

    connect(this, SIGNAL(closeWnd()), this, SLOT(close()), Qt::QueuedConnection);

    HGBase_OpenThread(ThreadFunc, this, &m_thread);
}

MainWindow::~MainWindow()
{
    HGBase_CloseThread(m_thread);
    m_thread = nullptr;

    delete ui;
}

void MainWindow::ThreadFunc(HGThread thread, HGPointer param)
{
    (void)thread;
    MainWindow* p = (MainWindow*)param;
    Upgrade(p->m_pkgPath);

    emit p->closeWnd();
}