Home Web Front-end Front-end Q&A Electron produces QQ music client - communication between main process and rendering process

Electron produces QQ music client - communication between main process and rendering process

Aug 26, 2021 pm 05:56 PM

The Electron main process manages all web pages and their corresponding rendering processes, while the rendering process can only manage the corresponding web pages. The collapse of one rendering process will not affect other rendering processes; so how do the two processes communicate?

Electron produces QQ music client - communication between main process and rendering process

Electron has two processes: the main process and the rendering process.

                                                                                                                                                                   . Each BrowserWindow instance runs the web page during its rendering process. When a BrowserWindow instance is destroyed, the corresponding rendering process will also be terminated.

2. The main process manages all web pages and their corresponding rendering processes.

           

                   

Rendering Process

1. The rendering process can only manage the corresponding web page. The crash of one rendering process will not affect other rendering processes.

2. The rendering process communicates with the main process through IPC to perform GUI operations on the web page. Calling local GUI-related APIs directly from the renderer process is restricted due to security and possible resource leaks.

Communication between processes can be done through the Inter-Process Communication (IPC) module: ipcMain and ipcRenderer

To create a window, call BrowserWindow Class, but can only be used in the main process (main.js):


    const { BrowserWindow } = require('electron')
    const win = new BrowserWindow()
Copy after login

To call the main process from the rendering process, please use the IPC module: For example, customize the window closing function in purge window mode

1. 首先由主进程向渲染进程发送消息,告诉它窗口的id(开启了多个渲染进程);

  win.once('ready-to-show', () => {
    win.webContents.send('init_win_id', win.id);
    win.show()
  });
Copy after login

2. 在渲染进程接收winid,并在关闭窗口时发送给主进程

    //渲染进程监听init_win_id事件(自定义),将winid赋给全局变量winid
    let winid = '';
    require('electron').ipcRenderer.on('init_win_id', (event, message) => {
		winid = message;
    })
    // 关闭窗体
	function closex(){		 
		 //渲染进程里把窗口id发给主进程

		const { ipcRenderer } = require('electron')
		ipcRenderer.send('close_window', winid);
	 
	}
Copy after login

3. 在主进程中接收需要关闭的渲染进程

    // 主进程获取winid关闭窗体
    ipcMain.on('close_window', (event, arg) => {    
        //app.quit()单个窗口可以直接app.quit()
        //win.close();
        // 1、接收渲染进程发来的窗口id
            let winid = arg;    
            console.log(winid);    
        // 2、通过id找到对应的BrowserWindow对象(win、win22),调用这个对象的close()关闭对应的窗口
            BrowserWindow.fromId(winid).close();
   
        })
Copy after login

The above is the detailed content of Electron produces QQ music client - communication between main process and rendering process. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

Video Face Swap

Video Face Swap

Swap faces in any video effortlessly with our completely free AI face swap tool!

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

React's Role in HTML: Enhancing User Experience React's Role in HTML: Enhancing User Experience Apr 09, 2025 am 12:11 AM

React combines JSX and HTML to improve user experience. 1) JSX embeds HTML to make development more intuitive. 2) The virtual DOM mechanism optimizes performance and reduces DOM operations. 3) Component-based management UI to improve maintainability. 4) State management and event processing enhance interactivity.

What are the limitations of Vue 2's reactivity system with regard to array and object changes? What are the limitations of Vue 2's reactivity system with regard to array and object changes? Mar 25, 2025 pm 02:07 PM

Vue 2's reactivity system struggles with direct array index setting, length modification, and object property addition/deletion. Developers can use Vue's mutation methods and Vue.set() to ensure reactivity.

React Components: Creating Reusable Elements in HTML React Components: Creating Reusable Elements in HTML Apr 08, 2025 pm 05:53 PM

React components can be defined by functions or classes, encapsulating UI logic and accepting input data through props. 1) Define components: Use functions or classes to return React elements. 2) Rendering component: React calls render method or executes function component. 3) Multiplexing components: pass data through props to build a complex UI. The lifecycle approach of components allows logic to be executed at different stages, improving development efficiency and code maintainability.

What are the benefits of using TypeScript with React? What are the benefits of using TypeScript with React? Mar 27, 2025 pm 05:43 PM

TypeScript enhances React development by providing type safety, improving code quality, and offering better IDE support, thus reducing errors and improving maintainability.

React and the Frontend: Building Interactive Experiences React and the Frontend: Building Interactive Experiences Apr 11, 2025 am 12:02 AM

React is the preferred tool for building interactive front-end experiences. 1) React simplifies UI development through componentization and virtual DOM. 2) Components are divided into function components and class components. Function components are simpler and class components provide more life cycle methods. 3) The working principle of React relies on virtual DOM and reconciliation algorithm to improve performance. 4) State management uses useState or this.state, and life cycle methods such as componentDidMount are used for specific logic. 5) Basic usage includes creating components and managing state, and advanced usage involves custom hooks and performance optimization. 6) Common errors include improper status updates and performance issues, debugging skills include using ReactDevTools and Excellent

How can you use useReducer for complex state management? How can you use useReducer for complex state management? Mar 26, 2025 pm 06:29 PM

The article explains using useReducer for complex state management in React, detailing its benefits over useState and how to integrate it with useEffect for side effects.

What are functional components in Vue.js? When are they useful? What are functional components in Vue.js? When are they useful? Mar 25, 2025 pm 01:54 PM

Functional components in Vue.js are stateless, lightweight, and lack lifecycle hooks, ideal for rendering pure data and optimizing performance. They differ from stateful components by not having state or reactivity, using render functions directly, a

How do you ensure that your React components are accessible? What tools can you use? How do you ensure that your React components are accessible? What tools can you use? Mar 27, 2025 pm 05:41 PM

The article discusses strategies and tools for ensuring React components are accessible, focusing on semantic HTML, ARIA attributes, keyboard navigation, and color contrast. It recommends using tools like eslint-plugin-jsx-a11y and axe-core for testi

See all articles