效果如下：

程式碼如下：

import QtQuick 2.9
import QtQuick.Controls 2.3

ApplicationWindow {
    visible: true
    width: 640
    height: 480
    title: qsTr("Menu Demo")
    color: "black"
    Menu{
        id : testmenu
        visible: true
        x : 200; y : 200;

        property var lablecolor: "white";

        Action{ text: "action1"}
        Menu{
            title: "menus"
            Action{
                text: "addmensy"
            }
        }

        topPadding: 2
        bottomPadding: 2
		
		//自定義樣式，參照Qt幫助文件
        delegate: MenuItem {
            id: menuItem
            implicitWidth: 500
            implicitHeight: 40
            arrow: Canvas {
                x: parent.width - width
                implicitWidth: 40
                implicitHeight: 40
                visible: menuItem.subMenu
                onPaint: {
                    var ctx = getContext("2d")
                    ctx.fillStyle = menuItem.highlighted ? "#ffffff" : "#21be2b"
                    ctx.moveTo(15, 15)
                    ctx.lineTo(width - 15, height / 2)
                    ctx.lineTo(15, height - 15)
                    ctx.closePath()
                    ctx.fill()
                }
            }

            indicator: Item {
                anchors.verticalCenter: parent.verticalCenter
                implicitWidth: 20
                implicitHeight: 20
                Rectangle {
                    width: 20
                    height: 20
                    anchors.centerIn: parent
                    visible: menuItem.checkable
                    border.color: "#21be2b"
                    radius: 3
                    Rectangle {

                        width: 14
                        height: 14
                        anchors.centerIn: parent
                        visible: menuItem.checked
                        color: "#21be2b"
                        radius: 2
                    }
                }
            }

            contentItem: Text {
                leftPadding: menuItem.indicator.width
                rightPadding: menuItem.arrow.width
                text: menuItem.text
                font: menuItem.font
                opacity: enabled ? 1.0 : 0.3
                color: menuItem.highlighted ? "#ffffff" : lablecolor
                horizontalAlignment: Text.AlignLeft
                verticalAlignment: Text.AlignVCenter
                elide: Text.ElideRight
            }

            background: Rectangle {
                implicitWidth: 200
                implicitHeight: 40
                opacity: enabled ? 1 : 0.3
                color: menuItem.highlighted ? "#000000" : "transparent"
                gradient: Gradient {
                     GradientStop { position: 0 ; color: menuItem.highlighted ? "#272424" : "#525252" }
                     GradientStop { position: 1 ; color: menuItem.highlighted ? "#080808" : "#232323" }
                  }
            }
        }

        background: Rectangle {
            implicitWidth: 200
            implicitHeight: 40
            color: "#000000"
            border.color: "darkgray"
            radius: 2
            gradient: Gradient {
                 GradientStop { position: 0 ; color:  "#525252" }
                 GradientStop { position: 1 ; color:  "#232323" }
              }
        }
    }

	//動態新增Item
    Component.onCompleted: {
         var component = Qt.createComponent("qrc:/ActionTest.qml");
          if (component.status == Component.Ready)
          {
              var obje = component.createObject(testmenu, {"text":"mmm"});
              obje.send.connect(test); //訊號實現
              testmenu.addAction(obje)
          }
    }
    function test(str)
    {
        console.log(str)
    }
}
 

ActionTest.qml檔案

import QtQuick 2.9
import QtQuick.Controls 2.3

Action{
    text: "addome"
    signal send(string title);
    checkable: true
    onTriggered: {
        send(source.text)
    }
}