我试图从两个窗口加载/保存所有QLineEdit和QTextEdit的文本，mainwindow和另一个称为widget，这是我如何保存/加载它：

void LoadSettings()
{
    QString m_sSettingsFile = 
         QApplication::applicationDirPath() + "/demosettings.ini";
    QSettings settings(m_sSettingsFile, QSettings::NativeFormat);

    for (auto btn : this->findChildren<QLineEdit*>())
    {
        QString text = settings.value("[M]" + btn->objectName(), "").toString();
        btn->setText(text);
    }

    for (auto btn : this->widget.findChildren<QTextEdit*>())
    {
        QString text = settings.value("[M]" + btn->objectName(), "").toString();
        btn->setText(text);        
    }

    for (auto btn : this->findChildren<QLineEdit*>())
    {
        QString text = settings.value("[W]" + btn->objectName(), "").toString();
        btn->setText(text);
    }

    for (auto btn : this->widget.findChildren<QTextEdit*>())
    {
        QString text = settings.value("[W]" + btn->objectName(), "").toString();
        btn->setText(text);        
    }
}


void SaveSettings()
{
    QString m_sSettingsFile = 
        QApplication::applicationDirPath() + "/demosettings.ini";
    QSettings settings(m_sSettingsFile, QSettings::NativeFormat);

    for (auto btn : this->findChildren<QLineEdit*>())
        settings.setValue("[M]" + btn->objectName(), btn->text());

    for (auto btn : this->findChildren<QTextEdit*>())
        settings.setValue("[M]" + btn->objectName(), btn->toPlainText());

    for (auto btn : this->widget.findChildren<QLineEdit*>())
        settings.setValue("[W]" + btn->objectName(), btn->text());

    for (auto btn : this->widget.findChildren<QTextEdit*>())
        settings.setValue("[W]" + btn->objectName(), btn->toPlainText());
}

但调用Loading后，所有捕获的小部件的文本都变为空白...
此外，是否有“更好”或最有效的方法来编写此任务？