----- Label -----


https://doc.qt.io/qt-6.9/zh/qml-qtquick-controls-label.html 

 属性 
import QtQuick
import QtQuick.Controls
    
Label {
    //控件背景与控件边界之间的填充
    topInset: real
    bottomInset: real
    leftInset: real
    rightInset: real
}

 只读属性 
import QtQuick
import QtQuick.Controls
    
Label {
    implicitBackgroundWidth(Height): real
        //隐式背景宽/高度
}

 自定义 
import QtQuick
import QtQuick.Controls
    
Label {
    background : Item {
        //背景
    }
}