Minor improvements of Win32 code

Yuhang Zhao

2024-12-09 42977738aba59150109fea3e9edd2b74643c1000

 examples/qml/QWKButton.qml

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