Fix mainwindow example

Sine Striker

2024-05-27 62d9c195f4fa77af10b4ace59b4c3353a31f417a

 examples/mainwindow/mainwindow.cpp

@@ -60,8 +60,7 @@
    setWindowTitle(tr("Example MainWindow"));
    resize(800, 600);

    setFixedHeight(600);

    // setFixedHeight(600);
    // windowAgent->centralize();
}