minor tweaks

Zhao Yuhang

2025-05-30 a4d0b98d40d0f740742e393db774ee53302ec64c

 examples/mainwindow/mainwindow.h

@@ -30,8 +30,6 @@
protected:
    bool event(QEvent *event) override;

    void closeEvent(QCloseEvent *event) override;

private:
    void installWindowAgent();
    void loadStyleSheet(Theme theme);