improve qml demo

Zhao Yuhang

2024-05-08 85e783997ffd9629cdaef44b7d482f23c8ca49cb

 examples/qml/main.qml

@@ -45,7 +45,6 @@
        id: titleBar
        anchors {
            top: parent.top
            topMargin: 1
            left: parent.left
            right: parent.right
        }
@@ -64,6 +63,7 @@
            height: 18
            mipmap: true
            source: "qrc:///app/example.png"
            Component.onCompleted: windowAgent.setSystemButton(WindowAgent.WindowIcon, iconButton)
        }

        Text {