Add fallback to qt window context

Sine Striker

2023-12-19 7e132b345cc2b2515838c387a76ccc9f29705ba6

 examples/mainwindow/dark-style.qss

@@ -16,6 +16,7 @@
    border: none;
    color: #ECECEC;
    background-color: transparent;
    min-height: 28px;
}