使用文件夹路径创建QTreeWidget目录结构

Question

在我的项目中，我有一个QFileDialog Box来选择任何文件夹。选择任何文件夹后，我会选择文件夹路径。现在我想使用路径将选定的文件夹及其子文件夹添加到QTreeWidget。 QTreeWidgets仅显示文件夹，当我点击任何文件夹或子文件夹时，所有文件都应显示在QTableWidgets中。

以下是代码：

  MainWindow::MainWindow(QWidget *parent)
    : QMainWindow(parent)
{
push=new QPushButton;
push->setText("Click");
connect(push,SIGNAL(clicked(bool)),this,SLOT(work()));

QIcon folderIcon(style()->standardPixmap(QStyle::SP_DirClosedIcon));
foldersTreeWidget = new QTreeWidget;
QStringList messageLabels;
messageLabels << tr("Subject") << tr("Sender") << tr("Date");
messagesTableWidget = new QTableWidget;
messagesTableWidget->setHorizontalHeaderLabels(messageLabels);

messagesTableWidget->resizeColumnToContents(0);
messagesTableWidget->resizeColumnToContents(1);

rightSplitter = new QSplitter(Qt::Vertical);
rightSplitter->addWidget(messagesTableWidget);
rightSplitter->addWidget(push);
rightSplitter->setStretchFactor(1, 1);

mainSplitter = new QSplitter(Qt::Horizontal);
mainSplitter->addWidget(foldersTreeWidget);
mainSplitter->addWidget(rightSplitter);
mainSplitter->setStretchFactor(1, 1);
setCentralWidget(mainSplitter);
}

void MainWindow::work()
{

dir = QFileDialog::getExistingDirectory(this, tr("Open Directory"),
                                             "/home",
                                             QFileDialog::ShowDirsOnly
                                             |     QFileDialog::DontResolveSymlinks);

QIcon folderIcon(style()->standardPixmap(QStyle::SP_DirClosedIcon));
addFolder(folderIcon, dir);
}


void MainWindow::addFolder(const QIcon &icon, const QString &name)
{

QTreeWidgetItem *root;
if (foldersTreeWidget->topLevelItemCount() == 0) {
    root = new QTreeWidgetItem(foldersTreeWidget);
    root->setText(0, tr("Mail"));
    foldersTreeWidget->setItemExpanded(root, true);
} else {
    root = foldersTreeWidget->topLevelItem(0);
}

QTreeWidgetItem *newItem = new QTreeWidgetItem(root);
newItem->setText(0, name);
newItem->setIcon(0, icon);

if (!foldersTreeWidget->currentItem())
    foldersTreeWidget->setCurrentItem(newItem);
}

我还没有完成所有代码部分。主要问题是：

-> I am getting folder path using QFileDialog

-> I want to use the path to add folder and it's subfolders to QTreeWidgets

-> When I click on any folder in QTreeWidgets, I want to display files along with some information like (location, size, name) in QTableWidget.

还有其他方法可以达到这个目的吗？

感谢您的时间。