Fix #151 and a crash bug related to sub frameless window

Sine Striker

2024-11-21 c3ef42dad254f6d04cab521c9ae619a46bb84f7a

 examples/qml/QWKButton.qml

@@ -20,6 +20,7 @@
            mipmap: true
            width: 12
            height: 12
            fillMode: Image.PreserveAspectFit
        }
    }
    background: Rectangle {