2个不同QML文件中2个不同对象之间的通信

Question

我有一个 main.qml 文件和另一个 "example.qml" 文件。当我从 "example.qml" 文件中按下按钮时，我想更改 "main.qml" 文件中的文本。我尝试定义文本的来源。我试过发送信号。我尝试使用装载机，但总是走到死胡同。

import QtQuick 2.12
import QtQuick.Layouts 1.12
import QtQuick.Controls 2.12
import QtQuick.Controls.Imagine 2.12
import QtQuick.Window 2.0

//main.qml
Window {
       visible: true
       width: 1080
       height: 720
       color: "black"
       title: qsTr("MY GUI")

    Text {
       id: deneme
       x: 100
       y: 400
       color: "white"
       text: "Trial"

   }
}

//example.qml

Item {
    id: difflock

    Rectangle{
        id: diffLockRect
        width: 1080
        height: 720
        color: "red"
        signal  mySignal

        Button{.


          onClicked: main.deneme.text = "Finally"
        }
    }
}

Answer 1

新建一个qml，命名为Example.qml(首字母大写)
在main.qml
Example.qml可以访问main.qml

main.qml

import QtQuick 2.12
import QtQuick.Layouts 1.12
import QtQuick.Controls 2.12
import QtQuick.Controls.Imagine 2.12
import QtQuick.Window 2.0
    Window {
           visible: true
           width: 1080
           height: 720
           color: "black"
           title: qsTr("MY GUI")

           Example{id:rfrnc} // You can also reach the other qml objects by using this id

        Text {
           id: deneme
           x: 100
           y: 400
           color: "white"
           text: "Trial"

       }
    }

Example.qml

import QtQuick 2.12
import QtQuick.Layouts 1.12
import QtQuick.Controls 2.12
import QtQuick.Controls.Imagine 2.12
import QtQuick.Window 2.0

Item {
    id: difflock

    Rectangle{
        id: diffLockRect
        width: 1080
        height: 720
        color: "red"
        signal  mySignal

        Button{

onClicked: deneme.text = "Finally"
        }
    }
}

2个不同QML文件中2个不同对象之间的通信

Communication between 2 different objects in 2 different QML files

qt

qml

qqmlcomponent