qml 一个信号与多个方法关联 和 c++信号与槽类似写法

import QtQuick 2.9import QtQuick.Window 2.2Window {    visible: true    width: 640    height: 480    title: qsTr("Hello World")    Rectangle{        id:relay        signal messageReceived(string person,string notice)        Component.onCompleted: {            relay.messageReceived.connect(sendToPost)            relay.messageReceived.connect(sendToTelegraph)            relay.messageReceived.connect(sendToEmail)            relay.messageReceived("xxx","yyy")        }        function sendToPost(person,notice){            console.log("send to post"+person +","+notice)        }        function sendToTelegraph(person,notice){            console.log("send to legraph"+person +","+notice)        }        function sendToEmail(person,notice){            console.log("send to email"+person +","+notice)        }    }}

结果：

qml: send to postxxx,yyy

qml: send to legraphxxx,yyy

qml: send to emailxxx,yyy