Partially finish the bug after window close and reshow

Sine Striker

2024-02-20 2d2fc799bc698ebf7e7c8bcc394366d0d7bf071b

 examples/mainwindow/mainwindow.qrc

@@ -1,5 +1,6 @@
<RCC>
    <qresource prefix="/">
        <file>dark-style.qss</file>
        <file>light-style.qss</file>
    </qresource>
</RCC>