JavaScript的Button的contentItem属性

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// NumberButton.qml
import QtQuick 2.9
import QtQuick.Controls 2.12Button {id: rootproperty int flashDuration: 100property alias label: labelText.textbackground: Rectangle {color: "transparent"}contentItem: Text {id: labelTextfont.pixelSize: getWidth(37)font.bold: truefont.family: "Arial"color: "#00CE31"horizontalAlignment: Text.AlignHCenterverticalAlignment: Text.AlignVCenteranchors.centerIn: parent}Rectangle {id: flashRectanchors.fill: parentcolor: "#00CE31"visible: false             // 初始隐藏}Timer {id: flashTimerinterval: root.flashDuration; running: false; repeat: falseonTriggered: flashRect.visible = false}onClicked: {flashRect.visible = trueflashTimer.start()}
}

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