Optimize system border condition

Sine Striker

2023-12-23 c9e611aff820922247655b607b60f275b21d385f

 examples/mainwindow/mainwindow.h

@@ -28,6 +28,7 @@

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

    Theme currentTheme{};