How to bind JavaScript functions to C++ in webview?

Use the bind() method in C++ to expose functions to JavaScript, as shown in the examples; this allows two-way communication for handling events and data exchange between native and web code.

Webview vs Electron: which is better for a desktop app?

Webview is ideal for lightweight, C/C++-focused apps without Node.js, offering smaller size and native integration. Electron suits full-featured web apps with Node.js backend but adds significant overhead.

Can I use React or Vue with webview?

Yes, but webview only provides the web engine; you must bundle and serve your framework assets manually, as it lacks a built-in server or Node.js runtime for tooling.

How to debug a webview application?

Debugging is limited since console.log() isn't supported; use native C/C++ debuggers and consider implementing custom logging or accessing the browser engine's dev tools if available on the platform.

What are the system requirements for webview on Windows?

Requires the WebView2 runtime installed for Windows versions before 11; developers need a C++14 compiler like Visual Studio 2022 and the WebView2 SDK, as noted in the Prerequisites section.

How to package a webview app for distribution?

Bundle HTML/CSS/JS assets with the executable; for Linux, ensure GTK and WebKitGTK libraries are present; for Windows, distribute WebView2 runtime or use static linking options detailed in the MS WebView2 Loader section.

Open-Awesome

webview

MITC++

A tiny cross-platform webview library for C/C++ to build modern cross-platform GUIs using native web engines.

GitHub

14.1k stars1.1k forks0 contributors

What is webview?

Webview is a tiny, cross-platform library for C and C++ that allows developers to embed web-based user interfaces into native desktop applications. It provides a single, unified API to create windows that render HTML/CSS/JavaScript using the operating system's native web engine (WebKit on Linux/macOS, WebView2 on Windows). The library solves the problem of building modern, portable desktop GUIs without requiring a full browser runtime or complex framework.

Target Audience

C and C++ developers building lightweight, cross-platform desktop applications who want to use web technologies for their user interface while maintaining native performance and integration.

Value Proposition

Developers choose Webview for its extreme minimalism, zero dependencies beyond the OS's web engine, and straightforward two-way binding between native code and JavaScript. It offers a simpler, more lightweight alternative to larger frameworks like Electron for applications that don't need a full Node.js runtime.

Overview

Tiny cross-platform webview library for C/C++. Uses WebKit (GTK/Cocoa) and Edge WebView2 (Windows).

Use Cases

Best For

Creating lightweight desktop utilities with HTML/CSS interfaces
Building cross-platform C/C++ applications with modern UIs
Embedding web-based dashboards or tools into native apps
Prototyping desktop applications quickly using web technologies
Developing educational tools or demos that combine native code with web visuals
Adding webview components to existing native C/C++ codebases

Not Ideal For

Applications requiring full browser dev tools or advanced JavaScript APIs like alert() and console.log()
Projects that rely on server-side rendering or a Node.js backend for web frameworks
Teams seeking drag-and-drop GUI builders or pre-styled component libraries out of the box
Environments where deploying the WebView2 runtime on older Windows systems is not feasible

Pros & Cons

Pros

Cross-Platform Native Integration

Leverages the OS's native web engines (WebKitGTK on Linux, Cocoa/WebKit on macOS, Edge WebView2 on Windows) for consistent performance and smaller executables, avoiding heavy runtimes like Electron.

Two-Way JavaScript Bindings

Enables seamless communication between C/C++ and JavaScript, as shown in examples for interactive UIs, allowing native code to call JS and vice versa without complex bridging.

Minimalist and Lightweight

Single-header library with few dependencies, focusing on simplicity; the README emphasizes tiny size and direct compiler usage to reduce bloat.

Build Flexibility

Offers CMake integration, amalgamated builds, and direct compiler support, detailed in the Non-CMake Usage section for various workflows from simple to complex.

Cons

Limited Browser Features

Admits in the Limitations section that it lacks support for essential browser APIs like alert(), confirm(), prompt(), and console.log(), requiring workarounds for common web interactions.

Complex Manual Setup

Non-CMake usage requires platform-specific compiler flags and library handling (e.g., pkg-config on Linux, WebView2 SDK on Windows), which can be error-prone for developers not using build systems.

Sparse Documentation

The README states that 'the most up-to-date documentation is right in the source code,' which may hinder beginners or those seeking comprehensive guides beyond code examples.

Frequently Asked Questions

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