是否修改QDockWidget默认快照位置？

#include <QDockWidget>
#include <QSettings>
#include <QFile>

class CustomDockWidget : public QDockWidget {
public:
    CustomDockWidget(const QString &title, QWidget *parent = nullptr)
        : QDockWidget(title, parent) {}

protected:
    void saveState(QSettings &settings) const override {
        // 自定义保存逻辑，将状态保存到指定文件
        QFile file("custom_snapshot.ini");
        if (file.open(QIODevice::WriteOnly)) {
            settings.beginGroup("CustomDockWidget");
            settings.setValue("geometry", saveGeometry());
            settings.setValue("state", saveState());
            settings.endGroup();
            file.close();
        }
    }

    void restoreState(QSettings &settings) override {
        // 自定义恢复逻辑，从指定文件恢复状态
        QFile file("custom_snapshot.ini");
        if (file.open(QIODevice::ReadOnly)) {
            settings.beginGroup("CustomDockWidget");
            restoreGeometry(settings.value("geometry").toByteArray());
            restoreState(settings.value("state").toByteArray());
            settings.endGroup();
            file.close();
        }
    }
};

int main(int argc, char *argv[]) {
    QApplication app(argc, argv);

    QMainWindow mainWindow;
    CustomDockWidget *dockWidget = new CustomDockWidget("Custom Dock Widget", &mainWindow);
    mainWindow.addDockWidget(Qt::LeftDockWidgetArea, dockWidget);

    mainWindow.show();
    return app.exec();
}