# cefpython (cztomczak/cefpython)

> Python bindings for the Chromium Embedded Framework (CEF), so Python programs can embed a Chromium browser engine in desktop applications.

- GitHub: https://github.com/cztomczak/cefpython
- GitHub.Locker page: https://github.locker/cztomczak/cefpython
- Stars: 3.2K
- Language: Cython
- Last push: 2026-11-06

## Questions and answers

Written by GitHub.Locker from the README and the repository; check the README below for details.

**Is it a GUI framework or just a browser widget?**

Both. It can serve as a full HTML5 rendering engine for a Python GUI, which the README calls 'Electron for Python', or as a browser widget inside Qt, GTK or wxPython apps.

**How do I get it running?**

Install one of the CEF Python 147 development wheels from the GitHub Releases page for your OS and Python version. The README also points to a tutorial and a set of examples.

**Which Python versions are supported?**

Python 3.10 through 3.14, 64-bit builds only.

**Does it work well on macOS?**

Only partly. macOS wheels are tested in CI with unit tests and smoke tests of the helloworld and tutorial examples. GUI examples and PyInstaller packaging have not been tested on macOS, and the author welcomes reports.

**Which operating systems does it support?**

Windows 10 and newer, Ubuntu 20.04+ or Debian 11+, and macOS 12+ on Apple Silicon only.

**How is it different from Selenium for testing?**

According to the README, CEF's low-level programming APIs give automated tests more advanced capabilities than Selenium-driven browser automation.

**How widely is CEF used?**

The README says more than 100 million CEF instances are installed around the world, spread across many applications.

**Who started the project and when?**

Czarek Tomczak founded CEF Python in 2012, according to the README.


---

## README (checked against GitHub 2026-11-08)

Source: https://github.com/cztomczak/cefpython/blob/master/README.md

# CEF Python

Table of contents:
* [Introduction](#introduction)
* [Install](#install)
* [Examples](#examples)
* [Support](#support)
* [Support development](#support-development)
* [Seeking sponsors](#seeking-sponsors)
* [API](#api)


## Introduction

CEF Python is an open source project founded by
[Czarek Tomczak](https://www.linkedin.com/in/czarektomczak/)
in 2012 to provide Python bindings for the
[Chromium Embedded Framework](https://bitbucket.org/chromiumembedded/cef) (CEF).
The Chromium project focuses mainly on Google Chrome application
development while CEF focuses on facilitating embedded browser use cases
in third-party applications. Lots of applications use CEF control, there are
more than [100 million CEF instances](http://en.wikipedia.org/wiki/Chromium_Embedded_Framework#Applications_using_CEF)
installed around the world. There are numerous use cases for CEF:

1. Use it as a modern HTML5 based rendering engine that can act as
   a replacement for classic desktop GUI frameworks. Think of it as Electron
   for Python.
2. Embed a web browser widget in a classic Qt / GTK / wxPython desktop
   application
3. Render web content off-screen in applications that use custom drawing
   frameworks
4. Use it for automated testing of web applications with more advanced
   capabilities than Selenium web browser automation due to CEF low level
   programming APIs
5. Use it for web scraping, as a web crawler or other kind of internet bots

CEF Python also provides examples of embedding CEF for many Python GUI
frameworks such as PyQt, wxPython, GTK 3, Tkinter, Kivy, Panda3D,
PyGame, PyOpenGL, PyWin32, PySide and PySDL2.


## Install

CEF Python 147 development wheels are available on [GitHub Releases](https://github.com/cztomczak/cefpython/releases).

OS | Python | 64bit | Requirements
--- | --- | --- | ---
Windows | 3.10 / 3.11 / 3.12 / 3.13 / 3.14 | Yes | Windows 10+
Linux | 3.10 / 3.11 / 3.12 / 3.13 / 3.14 | Yes | Ubuntu 20.04+, Debian 11+
macOS | 3.10 / 3.11 / 3.12 / 3.13 / 3.14 | Yes | macOS 12+ (Apple Silicon/arm64 only)

macOS wheels are tested in CI only (unit tests and a smoke test of the
hello_world.py and tutorial.py examples). GUI examples and PyInstaller
packaging were not tested on macOS, reports are welcome.


## Examples

- [Tutorial](docs/Tutorial.md)
- [All examples](examples/README-examples.md)
- [Snippets](examples/snippets/README-snippets.md)
- [PyInstaller packager](examples/pyinstaller/README-pyinstaller.md)


## Support

- Ask questions and report problems on the [Discussions page](../../discussions).
  You can also search the [Old Forum](https://groups.google.com/group/cefpython) for previous discussions.
- Supported examples are listed in the
  [README-examples.md](examples/README-examples.md) file
- Documentation is in the [docs/](docs) directory:
  - [Build instructions](docs/Build-instructions.md)
  - [Contributing code](docs/Contributing-code.md)
  - [Knowledge Base](docs/Knowledge-Base.md)
  - [Migration guide](docs/Migration-guide.md)
  - [Tutorial](docs/Tutorial.md)
- API reference is in the [api/](api) directory:
  - [API categories](api/API-categories.md#api-categories)
  - [API index](api/API-index.md#api-index)
- Additional documentation is available in
  [Issues labelled Knowledge Base](../../issues?q=is%3Aissue+is%3Aopen+label%3A%22Knowledge+Base%22)
- To search documentation use GitHub "This repository" search
  at the top. To narrow results to documentation only select
  "Markdown" in the side pane

## Support development

To support general CEF Python development efforts you can make a donation using PayPal button below:

<a href='https://www.paypal.com/donate/?hosted_button_id=V7LU7PD4N4GGG'>
<img src='https://raw.githubusercontent.com/wiki/cztomczak/phpdesktop/donate.gif' />
</a><br>


## Seeking sponsors

CEF Python is seeking companies to sponsor development of this project. Most important
thing would be to have continuous monthly releases with updates to latest Chromium. There is
also lots of cool features and new settings that would be nice to implement. We have not yet
exposed all of upstream CEF APIs. If your company would like to sponsor CEF Python development efforts
then please contact [Czarek](https://www.linkedin.com/in/czarektomczak/). There are no active sponsors
at this moment.


## API

#### Modules

 * [cefpython](api/cefpython.md#cefpython) module


#### Settings

 * [ApplicationSettings](api/ApplicationSettings.md#application-settings) dictionary
 * [BrowserSettings](api/BrowserSettings.md#browser-settings) dictionary
 * [CommandLineSwitches](api/CommandLineSwitches.md#command-line-switches) dictionary


#### Classes and objects

 * [Browser](api/Browser.md#browser-object) object
 * [Callback](api/Callback.md#callback-object) object
 * [Cookie](api/Cookie.md#cookie-class) class
 * [CookieManager](api/CookieManager.md#cookiemanager-class) class
 * [DpiAware](api/DpiAware.md#dpiaware-class) class (Win)
 * [DragData](api/DragData.md#dragdata-object) object
 * [Frame](api/Frame.md#frame-object) object
 * [Image](api/Image.md#image-object) object
 * [JavascriptBindings](api/JavascriptBindings.md#javascriptbindings-class) class
 * [JavascriptCallback](api/JavascriptCallback.md#javascriptcallback-object) object
 * [PaintBuffer](api/PaintBuffer.md#paintbuffer-object) object
 * [Request](api/Request.md#request-class) class
 * [Response](api/Response.md#response-object) object
 * [WebRequest](api/WebRequest.md#webrequest-class) class
 * [WindowInfo](api/WindowInfo.md#windowinfo-class) class
 * [WindowUtils](api/WindowUtils.md#windowutils-class) class


#### Client handlers (interfaces)

 * [AccessibilityHandler](api/AccessibilityHandler.md#accessibilityhandler-interface)
 * [DisplayHandler](api/DisplayHandler.md#displayhandler-interface)
 * [DownloadHandler](api/DownloadHandler.md#downloadhandler)
 * [FocusHandler](api/FocusHandler.md#focushandler-interface)
 * [JavascriptDialogHandler](api/JavascriptDialogHandler.md#javascriptdialoghandler-interface)
 * [KeyboardHandler](api/KeyboardHandler.md#keyboardhandler-interface)
 * [LifespanHandler](api/LifespanHandler.md#lifespanhandler-interface)
 * [LoadHandler](api/LoadHandler.md#loadhandler-interface)
 * [RenderHandler](api/RenderHandler.md#renderhandler-interface)
 * [RequestHandler](api/RequestHandler.md#requesthandler-interface)
 * [ResourceHandler](api/ResourceHandler.md#resourcehandler-interface)
 * [V8ContextHandler](api/V8ContextHandler.md#v8contexthandler-interface)


#### Other interfaces

 * [CookieVisitor](api/CookieVisitor.md#cookievisitor-interface) interface
 * [StringVisitor](api/StringVisitor.md#stringvisitor-interface) interface
 * [WebRequestClient](api/WebRequestClient.md#webrequestclient-interface) interface


### API index

* [AccessibilityHandler (interface)](api/AccessibilityHandler.md#accessibilityhandler-interface)
  * [_OnAccessibilityTreeChange](api/AccessibilityHandler.md#_onaccessibilitytreechange)
  * [_OnAccessibilityLocationChange](api/AccessibilityHandler.md#_onaccessibilitylocationchange)
* [Application settings](api/ApplicationSettings.md#application-settings)
  * [app_user_model_id](api/ApplicationSettings.md#app_user_model_id)
  * [auto_zooming](api/ApplicationSettings.md#auto_zooming)
  * [background_color](api/ApplicationSettings.md#background_color)
  * [browser_subprocess_path](api/ApplicationSettings.md#browser_subprocess_path)
  * [cache_path](api/ApplicationSettings.md#cache_path)
  * [command_line_args_disabled](api/ApplicationSettings.md#command_line_args_disabled)
  * [context_menu](api/ApplicationSettings.md#context_menu)
  * [downloads_enabled](api/ApplicationSettings.md#downloads_enabled)
  * [external_message_pump](api/ApplicationSettings.md#external_message_pump)
  * [framework_dir_path](api/ApplicationSettings.md#framework_dir_path)
  * [javascript_flags](api/ApplicationSettings.md#javascript_flags)
  * [locale](api/ApplicationSettings.md#locale)
  * [locales_dir_path](api/ApplicationSettings.md#locales_dir_path)
  * [main_bundle_path](api/ApplicationSettings.md#main_bundle_path)
  * [debug](api/ApplicationSettings.md#debug)
  * [log_file](api/ApplicationSettings.md#log_file)
  * [log_severity](api/ApplicationSettings.md#log_severity)
  * [multi_threaded_message_loop](api/ApplicationSettings.md#multi_threaded_message_loop)
  * [persist_session_cookies](api/ApplicationSettings.md#persist_session_cookies)
  * [remote_debugging_port](api/ApplicationSettings.md#remote_debugging_port)
  * [resources_dir_path](api/ApplicationSettings.md#resources_dir_path)
  * [string_encoding](api/ApplicationSettings.md#string_encoding)
  * [uncaught_exception_stack_size](api/ApplicationSettings.md#uncaught_exception_stack_size)
  * [unique_request_context_per_browser](api/ApplicationSettings.md#unique_request_context_per_browser)
  * [user_agent](api/ApplicationSettings.md#user_agent)
  * [windowless_rendering_enabled](api/ApplicationSettings.md#windowless_rendering_enabled)
* [Browser (object)](api/Browser.md#browser-object)
  * [AddWordToDictionary](api/Browser.md#addwordtodictionary)
  * [CanGoBack](api/Browser.md#cangoback)
  * [CanGoForward](api/Browser.md#cangoforward)
  * [CloseBrowser](api/Browser.md#closebrowser)
  * [CloseDevTools](api/Browser.md#closedevtools)
  * [DragTargetDragEnter](api/Browser.md#dragtargetdragenter)
  * [DragTargetDragOver](api/Browser.md#dragtargetdragover)
  * [DragTargetDragLeave](api/Browser.md#dragtargetdragleave)
  * [DragTargetDrop](api/Browser.md#dragtargetdrop)
  * [DragSourceEndedAt](api/Browser.md#dragsourceendedat)
  * [DragSourceSystemDragEnded](api/Browser.md#dragsourcesystemdragended)
  * [ExecuteFunction](api/Browser.md#executefunction)
  * [ExecuteJavascript](api/Browser.md#executejavascript)
  * [Find](api/Browser.md#find)
  * [GetClientCallback](api/Browser.md#getclientcallback)
  * [GetClientCallbacksDict](api/Browser.md#getclientcallbacksdict)
  * [GetFocusedFrame](api/Browser.md#getfocusedframe)
  * [GetFrameByIdentifier](api/Browser.md#getframebyidentifier)
  * [GetFrameByName](api/Browser.md#getframebyname)
  * [GetFrameNames](api/Browser.md#getframenames)
  * [GetFrames](api/Browser.md#getframes)
  * [GetImage](api/Browser.md#getimage)
  * [GetJavascriptBindings](api/Browser.md#getjavascriptbindings)
  * [GetMainFrame](api/Browser.md#getmainframe)
  * [GetOpenerWindowHandle](api/Browser.md#getopenerwindowhandle)
  * [GetOuterWindowHandle](api/Browser.md#getouterwindowhandle)
  * [GetSetting](api/Browser.md#getsetting)
  * [GetUrl](api/Browser.md#geturl)
  * [GetUserData](api/Browser.md#getuserdata)
  * [GetWindowHandle](api/Browser.md#getwindowhandle)
  * [GetIdentifier](api/Browser.md#getidentifier)
  * [GetZoomLevel](api/Browser.md#getzoomlevel)
  * [GoBack](api/Browser.md#goback)
  * [GoForward](api/Browser.md#goforward)
  * [HasDevTools](api/Browser.md#hasdevtools)
  * [HasDocument](api/Browser.md#hasdocument)
  * [Invalidate](api/Browser.md#invalidate)
  * [IsFullscreen](api/Browser.md#isfullscreen)
  * [IsPopup](api/Browser.md#ispopup)
  * [IsWindowRenderingDisabled](api/Browser.md#iswindowrenderingdisabled)
  * [LoadUrl](api/Browser.md#loadurl)
  * [Navigate](api/Browser.md#navigate)
  * [NotifyMoveOrResizeStarted](api/Browser.md#notifymoveorresizestarted)
  * [NotifyScreenInfoChanged](api/Browser.md#notifyscreeninfochanged)
  * [ParentWindowWillClose](api/Browser.md#parentwindowwillclose)
  * [Print](api/Browser.md#print)
  * [Reload](api/Browser.md#reload)
  * [ReloadIgnoreCache](api/Browser.md#reloadignorecache)
  * [ReplaceMisspelling](api/Browser.md#replacemisspelling)
  * [SetAutoResizeEnabled](api/Browser.md#setautoresizeenabled)
  * [SetBounds](api/Browser.md#setbounds)
  * [SendKeyEvent](api/Browser.md#sendkeyevent)
  * [SendMouseClickEvent](api/Browser.md#sendmouseclickevent)
  * [SendMouseMoveEvent](api/Browser.md#sendmousemoveevent)
  * [SendMouseWheelEvent](api/Browser.md#sendmousewheelevent)
  * [SendCaptureLostEvent](api/Browser.md#sendcapturelostevent)
  * [SetAccessibilityState](api/Browser.md#setaccessibilitystate)
  * [SetClientCallback](api/Browser.md#setclientcallback)
  * [SetClientHandler](api/Browser.md#setclienthandler)
  * [SetFocus](api/Browser.md#setfocus)
  * [SetJavascriptBindings](api/Browser.md#setjavascriptbindings)
  * [SetUserData](api/Browser.md#setuserdata)
  * [SetZoomLevel](api/Browser.md#setzoomlevel)
  * [ShowDevTools](api/Browser.md#showdevtools)
  * [StartDownload](api/Browser.md#startdownload)
  * [StopLoad](api/Browser.md#stopload)
  * [StopFinding](api/Browser.md#stopfinding)
  * [ToggleFullscreen](api/Browser.md#togglefullscreen)
  * [TryCloseBrowser](api/Browser.md#tryclosebrowser)
  * [WasResized](api/Browser.md#wasresized)
  * [WasHidden](api/Browser.md#washidden)
* [Browser settings](api/BrowserSettings.md#browser-settings)
  * [Font settings](api/BrowserSettings.md#font-settings)
  * [background_color](api/BrowserSettings.md#background_color)
  * [databases_disabled](api/BrowserSettings.md#databases_disabled)
  * [default_encoding](api/BrowserSettings.md#default_encoding)
  * [dom_paste_disabled](api/BrowserSettings.md#dom_paste_disabled)
  * [inherit_client_handlers_for_popups](api/BrowserSettings.md#inherit_client_handlers_for_popups)
  * [image_load_disabled](api/BrowserSettings.md#image_load_disabled)
  * [javascript_disabled](api/BrowserSettings.md#javascript_disabled)
  * [javascript_close_windows_disallowed](api/BrowserSettings.md#javascript_close_windows_disallowed)
  * [javascript_access_clipboard_disallowed](api/BrowserSettings.md#javascript_access_clipboard_disallowed)
  * [local_storage_disabled](api/BrowserSettings.md#local_storage_disabled)
  * [remote_fonts_disabled](api/BrowserSettings.md#remote_fonts_disabled)
  * [shrink_standalone_images_to_fit](api/BrowserSettings.md#shrink_standalone_images_to_fit)
  * [tab_to_links_disabled](api/BrowserSettings.md#tab_to_links_disabled)
  * [text_area_resize_disabled](api/BrowserSettings.md#text_area_resize_disabled)
  * [user_style_sheet_location](api/BrowserSettings.md#user_style_sheet_location)
  * [webgl_disabled](api/BrowserSettings.md#webgl_disabled)
  * [windowless_frame_rate](api/BrowserSettings.md#windowless_frame_rate)
* [Callback (object)](api/Callback.md#callback-object)
  * [Continue](api/Callback.md#continue)
  * [Cancel](api/Callback.md#cancel)
* [cefpython](api/cefpython.md#cefpython)
  * [CreateBrowser](api/cefpython.md#createbrowser)
  * [CreateBrowserSync](api/cefpython.md#createbrowsersync)
  * [ExceptHook](api/cefpython.md#excepthook)
  * [GetAppSetting](api/cefpython.md#getappsetting)
  * [GetAppPath](api/cefpython.md#getapppath)
  * [GetBrowserByIdentifier](api/cefpython.md#getbrowserbyidentifier)
  * [GetBrowserByWindowHandle](api/cefpython.md#getbrowserbywindowhandle)
  * [GetDataUrl](api/cefpython.md#getdataurl)
  * [GetGlobalClientCallback](api/cefpython.md#getglobalclientcallback)
  * [GetModuleDirectory](api/cefpython.md#getmoduledirectory)
  * [GetVersion](api/cefpython.md#getversion)
  * [Initialize](api/cefpython.md#initialize)
  * [IsThread](api/cefpython.md#isthread)
  * [LoadCrlSetsFile](api/cefpython.md#loadcrlsetsfile)
  * [MessageLoop](api/cefpython.md#messageloop)
  * [MessageLoopWork](api/cefpython.md#messageloopwork)
  * [PostTask](api/cefpython.md#posttask)
  * [PostDelayedTask](api/cefpython.md#postdelayedtask)
  * [QuitMessageLoop](api/cefpython.md#quitmessageloop)
  * [SetGlobalClientCallback](api/cefpython.md#setglobalclientcallback)
  * [SetGlobalClientHandler](api/cefpython.md#setglobalclienthandler)
  * [SetOsModalLoop](api/cefpython.md#setosmodalloop)
  * [Shutdown](api/cefpython.md#shutdown)
* [Command line switches](api/CommandLineSwitches.md#command-line-switches)
  * [enable-media-stream](api/CommandLineSwitches.md#enable-media-stream)
  * [proxy-server](api/CommandLineSwitches.md#proxy-server)
  * [no-proxy-server](api/CommandLineSwitches.md#no-proxy-server)
  * [disable-gpu](api/CommandLineSwitches.md#disable-gpu)
* [Cookie (class)](api/Cookie.md#cookie-class)
  * [Set](api/Cookie.md#set)
  * [Get](api/Cookie.md#get)
  * [SetName](api/Cookie.md#setname)
  * [GetName](api/Cookie.md#getname)
  * [SetValue](api/Cookie.md#setvalue)
  * [GetValue](api/Cookie.md#getvalue)
  * [SetDomain](api/Cookie.md#setdomain)
  * [GetDomain](api/Cookie.md#getdomain)
  * [SetPath](api/Cookie.md#setpath)
  * [GetPath](api/Cookie.md#getpath)
  * [SetSecure](api/Cookie.md#setsecure)
  * [GetSecure](api/Cookie.md#getsecure)
  * [SetHttpOnly](api/Cookie.md#sethttponly)
  * [GetHttpOnly](api/Cookie.md#gethttponly)
  * [SetCreation](api/Cookie.md#setcreation)
  * [GetCreation](api/Cookie.md#getcreation)
  * [SetLastAccess](api/Cookie.md#setlastaccess)
  * [GetLastAccess](api/Cookie.md#getlastaccess)
  * [SetHasExpires](api/Cookie.md#sethasexpires)
  * [GetHasExpires](api/Cookie.md#gethasexpires)
  * [SetExpires](api/Cookie.md#setexpires)
  * [GetExpires](api/Cookie.md#getexpires)
* [CookieManager (class)](api/CookieManager.md#cookiemanager-class)
  * [GetGlobalManager](api/CookieManager.md#getglobalmanager)
  * [VisitAllCookies](api/CookieManager.md#visitallcookies)
  * [VisitUrlCookies](api/CookieManager.md#visiturlcookies)
  * [SetCookie](api/CookieManager.md#setcookie)
  * [DeleteCookies](api/CookieManager.md#deletecookies)
  * [FlushStore](api/CookieManager.md#flushstore)
* [CookieVisitor (interface)](api/CookieVisitor.md#cookievisitor-interface)
  * [Visit](api/CookieVisitor.md#visit)
* [DisplayHandler (interface)](api/DisplayHandler.md#displayhandler-interface)
  * [OnAddressChange](api/DisplayHandler.md#onaddresschange)
  * [OnAutoResize](api/DisplayHandler.md#onautoresize)
  * [OnConsoleMessage](api/DisplayHandler.md#onconsolemessage)
  * [OnLoadingProgressChange](api/DisplayHandler.md#onloadingprogresschange)
  * [OnStatusMessage](api/DisplayHandler.md#onstatusmessage)
  * [OnTitleChange](api/DisplayHandler.md#ontitlechange)
  * [OnTooltip](api/DisplayHandler.md#ontooltip)
* [DownloadHandler](api/DownloadHandler.md#downloadhandler)
* [DpiAware (class)](api/DpiAware.md#dpiaware-class)
  * [CalculateWindowSize](api/DpiAware.md#calculatewindowsize)
  * [GetSystemDpi](api/DpiAware.md#getsystemdpi)
  * [IsProcessDpiAware](api/DpiAware.md#isprocessdpiaware)
  * [SetProcessDpiAware](api/DpiAware.md#setprocessdpiaware)
  * [Scale](api/DpiAware.md#scale)
* [DragData (object)](api/DragData.md#dragdata-object)
  * [IsLink](api/DragData.md#islink)
  * [IsFragment](api/DragData.md#isfragment)
  * [GetLinkUrl](api/DragData.md#getlinkurl)
  * [GetLinkTitle](api/DragData.md#getlinktitle)
  * [GetFragmentText](api/DragData.md#getfragmenttext)
  * [GetFragmentHtml](api/DragData.md#getfragmenthtml)
  * [GetImage](api/DragData.md#getimage)
  * [GetImageHotspot](api/DragData.md#getimagehotspot)
  * [HasImage](api/DragData.md#hasimage)
* [FocusHandler (interface)](api/FocusHandler.md#focushandler-interface)
  * [OnTakeFocus](api/FocusHandler.md#ontakefocus)
  * [OnSetFocus](api/FocusHandler.md#onsetfocus)
  * [OnGotFocus](api/FocusHandler.md#ongotfocus)
* [Frame (object)](api/Frame.md#frame-object)
  * [Copy](api/Frame.md#copy)
  * [Cut](api/Frame.md#cut)
  * [Delete](api/Frame.md#delete)
  * [ExecuteFunction](api/Frame.md#executefunction)
  * [ExecuteJavascript](api/Frame.md#executejavascript)
  * [GetBrowser](api/Frame.md#getbrowser)
  * [GetParent](api/Frame.md#getparent)
  * [GetIdentifier](api/Frame.md#getidentifier)
  * [GetBrowserIdentifier](api/Frame.md#getbrowseridentifier)
  * [GetName](api/Frame.md#getname)
  * [GetParent](api/Frame.md#getparent)
  * [GetSource](api/Frame.md#getsource)
  * [GetText](api/Frame.md#gettext)
  * [GetUrl](api/Frame.md#geturl)
  * [IsFocused](api/Frame.md#isfocused)
  * [IsMain](api/Frame.md#ismain)
  * [IsValid](api/Frame.md#isvalid)
  * [LoadUrl](api/Frame.md#loadurl)
  * [Paste](api/Frame.md#paste)
  * [Redo](api/Frame.md#redo)
  * [SelectAll](api/Frame.md#selectall)
  * [Undo](api/Frame.md#undo)
  * [ViewSource](api/Frame.md#viewsource)
* [Image (object)](api/Image.md#image-object)
  * [GetAsBitmap](api/Image.md#getasbitmap)
  * [GetAsPng](api/Image.md#getaspng)
  * [GetHeight](api/Image.md#getheight)
  * [GetWidth](api/Image.md#getwidth)
* [JavascriptBindings (class)](api/JavascriptBindings.md#javascriptbindings-class)
  * [\_\_init\_\_](api/JavascriptBindings.md#__init__)
  * [IsValueAllowed](api/JavascriptBindings.md#isvalueallowed)
  * [Rebind](api/JavascriptBindings.md#rebind)
  * [SetFunction](api/JavascriptBindings.md#setfunction)
  * [SetObject](api/JavascriptBindings.md#setobject)
  * [SetProperty](api/JavascriptBindings.md#setproperty)
* [JavascriptCallback (object)](api/JavascriptCallback.md#javascriptcallback-object)
  * [Call](api/JavascriptCallback.md#call)
  * [GetFrame](api/JavascriptCallback.md#getframe)
  * [GetId](api/JavascriptCallback.md#getid)
  * [GetFunctionName](api/JavascriptCallback.md#getfunctionname)
* [JavascriptDialogHandler (interface)](api/JavascriptDialogHandler.md#javascriptdialoghandler-interface)
  * [Continue](api/JavascriptDialogHandler.md#continue)
  * [OnJavascriptDialog](api/JavascriptDialogHandler.md#onjavascriptdialog)
  * [OnBeforeUnloadJavascriptDialog](api/JavascriptDialogHandler.md#onbeforeunloadjavascriptdialog)
  * [OnResetJavascriptDialogState](api/JavascriptDialogHandler.md#onresetjavascriptdialogstate)
  * [OnJavascriptDialogClosed](api/JavascriptDialogHandler.md#onjavascriptdialogclosed)
* [KeyboardHandler (interface)](api/KeyboardHandler.md#keyboardhandler-interface)
  * [OnPreKeyEvent](api/KeyboardHandler.md#onprekeyevent)
  * [OnKeyEvent](api/KeyboardHandler.md#onkeyevent)
* [LifespanHandler (interface)](api/LifespanHandler.md#lifespanhandler-interface)
  * [DoClose](api/LifespanHandler.md#doclose)
  * [_OnAfterCreated](api/LifespanHandler.md#_onaftercreated)
  * [OnBeforeClose](api/LifespanHandler.md#onbeforeclose)
  * [OnBeforePopup](api/LifespanHandler.md#onbeforepopup)
* [LoadHandler (interface)](api/LoadHandler.md#loadhandler-interface)
  * [OnLoadingStateChange](api/LoadHandler.md#onloadingstatechange)
  * [OnLoadStart](api/LoadHandler.md#onloadstart)
  * [OnDomReady](api/LoadHandler.md#ondomready)
  * [OnLoadEnd](api/LoadHandler.md#onloadend)
  * [OnLoadError](api/LoadHandler.md#onloaderror)
* [Network error](api/NetworkError.md#network-error)
  * [ERR_NONE](api/NetworkError.md#err_none)
  * [ERR_ABORTED](api/NetworkError.md#err_aborted)
  * [ERR_ACCESS_DENIED](api/NetworkError.md#err_access_denied)
  * [ERR_ADDRESS_INVALID](api/NetworkError.md#err_address_invalid)
  * [ERR_ADDRESS_UNREACHABLE](api/NetworkError.md#err_address_unreachable)
  * [ERR_CACHE_MISS](api/NetworkError.md#err_cache_miss)
  * [ERR_CERT_AUTHORITY_INVALID](api/NetworkError.md#err_cert_authority_invalid)
  * [ERR_CERT_COMMON_NAME_INVALID](api/NetworkError.md#err_cert_common_name_invalid)
  * [ERR_CERT_CONTAINS_ERRORS](api/NetworkError.md#err_cert_contains_errors)
  * [ERR_CERT_DATE_INVALID](api/NetworkError.md#err_cert_date_invalid)
  * [ERR_CERT_END](api/NetworkError.md#err_cert_end)
  * [ERR_CERT_INVALID](api/NetworkError.md#err_cert_invalid)
  * [ERR_CERT_NO_REVOCATION_MECHANISM](api/NetworkError.md#err_cert_no_revocation_mechanism)
  * [ERR_CERT_REVOKED](api/NetworkError.md#err_cert_revoked)
  * [ERR_CERT_UNABLE_TO_CHECK_REVOCATION](api/NetworkError.md#err_cert_unable_to_check_revocation)
  * [ERR_CONNECTION_ABORTED](api/NetworkError.md#err_connection_aborted)
  * [ERR_CONNECTION_CLOSED](api/NetworkError.md#err_connection_closed)
  * [ERR_CONNECTION_FAILED](api/NetworkError.md#err_connection_failed)
  * [ERR_CONNECTION_REFUSED](api/NetworkError.md#err_connection_refused)
  * [ERR_CONNECTION_RESET](api/NetworkError.md#err_connection_reset)
  * [ERR_DISALLOWED_URL_SCHEME](api/NetworkError.md#err_disallowed_url_scheme)
  * [ERR_EMPTY_RESPONSE](api/NetworkError.md#err_empty_response)
  * [ERR_FAILED](api/NetworkError.md#err_failed)
  * [ERR_FILE_NOT_FOUND](api/NetworkError.md#err_file_not_found)
  * [ERR_FILE_TOO_BIG](api/NetworkError.md#err_file_too_big)
  * [ERR_INSECURE_RESPONSE](api/NetworkError.md#err_insecure_response)
  * [ERR_INTERNET_DISCONNECTED](api/NetworkError.md#err_internet_disconnected)
  * [ERR_INVALID_ARGUMENT](api/NetworkError.md#err_invalid_argument)
  * [ERR_INVALID_CHUNKED_ENCODING](api/NetworkError.md#err_invalid_chunked_encoding)
  * [ERR_INVALID_HANDLE](api/NetworkError.md#err_invalid_handle)
  * [ERR_INVALID_RESPONSE](api/NetworkError.md#err_invalid_response)
  * [ERR_INVALID_URL](api/NetworkError.md#err_invalid_url)
  * [ERR_METHOD_NOT_SUPPORTED](api/NetworkError.md#err_method_not_supported)
  * [ERR_NAME_NOT_RESOLVED](api/NetworkError.md#err_name_not_resolved)
  * [ERR_NO_SSL_VERSIONS_ENABLED](api/NetworkError.md#err_no_ssl_versions_enabled)
  * [ERR_NOT_IMPLEMENTED](api/NetworkError.md#err_not_implemented)
  * [ERR_RESPONSE_HEADERS_TOO_BIG](api/NetworkError.md#err_response_headers_too_big)
  * [ERR_SSL_CLIENT_AUTH_CERT_NEEDED](api/NetworkError.md#err_ssl_client_auth_cert_needed)
  * [ERR_SSL_PROTOCOL_ERROR](api/NetworkError.md#err_ssl_protocol_error)
  * [ERR_SSL_RENEGOTIATION_REQUESTED](api/NetworkError.md#err_ssl_renegotiation_requested)
  * [ERR_SSL_VERSION_OR_CIPHER_MISMATCH](api/NetworkError.md#err_ssl_version_or_cipher_mismatch)
  * [ERR_TIMED_OUT](api/NetworkError.md#err_timed_out)
  * [ERR_TOO_MANY_REDIRECTS](api/NetworkError.md#err_too_many_redirects)
  * [ERR_TUNNEL_CONNECTION_FAILED](api/NetworkError.md#err_tunnel_connection_failed)
  * [ERR_UNEXPECTED](api/NetworkError.md#err_unexpected)
  * [ERR_UNEXPECTED_PROXY_AUTH](api/NetworkError.md#err_unexpected_proxy_auth)
  * [ERR_UNKNOWN_URL_SCHEME](api/NetworkError.md#err_unknown_url_scheme)
  * [ERR_UNSAFE_PORT](api/NetworkError.md#err_unsafe_port)
  * [ERR_UNSAFE_REDIRECT](api/NetworkError.md#err_unsafe_redirect)
* [PaintBuffer (object)](api/PaintBuffer.md#paintbuffer-object)
  * [GetIntPointer](api/PaintBuffer.md#getintpointer)
  * [GetBytes](api/PaintBuffer.md#getbytes)
* [RenderHandler (interface)](api/RenderHandler.md#renderhandler-interface)
  * [GetRootScreenRect](api/RenderHandler.md#getrootscreenrect)
  * [GetViewRect](api/RenderHandler.md#getviewrect)
  * [GetScreenPoint](api/RenderHandler.md#getscreenpoint)
  * [OnPopupShow](api/RenderHandler.md#onpopupshow)
  * [OnPopupSize](api/RenderHandler.md#onpopupsize)
  * [OnPaint](api/RenderHandler.md#onpaint)
  * [OnCursorChange](api/RenderHandler.md#oncursorchange)
  * [OnScrollOffsetChanged](api/RenderHandler.md#onscrolloffsetchanged)
  * [OnTextSelectionChanged](api/RenderHandler.md#ontextselectionchanged)
  * [StartDragging](api/RenderHandler.md#startdragging)
  * [UpdateDragCursor](api/RenderHandler.md#updatedragcursor)
* [Request (class)](api/Request.md#request-class)
  * [CreateRequest](api/Request.md#createrequest)
  * [GetUrl](api/Request.md#geturl)
  * [SetUrl](api/Request.md#seturl)
  * [GetMethod](api/Request.md#getmethod)
  * [SetMethod](api/Request.md#setmethod)
  * [SetReferrer](api/Request.md#setreferrer)
  * [GetReferrerURL](api/Request.md#getreferrerurl)
  * [GetReferrerPolicy](api/Request.md#getreferrerpolicy)
  * [GetPostData](api/Request.md#getpostdata)
  * [SetPostData](api/Request.md#setpostdata)
  * [GetHeaderMap](api/Request.md#getheadermap)
  * [GetHeaderMultimap](api/Request.md#getheadermultimap)
  * [SetHeaderMap](api/Request.md#setheadermap)
  * [SetHeaderMultimap](api/Request.md#setheadermultimap)
  * [GetFlags](api/Request.md#getflags)
  * [SetFlags](api/Request.md#setflags)
  * [GetFirstPartyForCookies](api/Request.md#getfirstpartyforcookies)
  * [SetFirstPartyForCookies](api/Request.md#setfirstpartyforcookies)
* [RequestHandler (interface)](api/RequestHandler.md#requesthandler-interface)
  * [GetAuthCredentials](api/RequestHandler.md#getauthcredentials)
  * [GetResourceHandler](api/RequestHandler.md#getresourcehandler)
  * [OnBeforeBrowse](api/RequestHandler.md#onbeforebrowse)
  * [OnBeforeResourceLoad](api/RequestHandler.md#onbeforeresourceload)
  * [_OnCertificateError](api/RequestHandler.md#_oncertificateerror)
  * [OnResourceRedirect](api/RequestHandler.md#onresourceredirect)
  * [OnResourceResponse](api/RequestHandler.md#onresourceresponse)
  * [OnProtocolExecution](api/RequestHandler.md#onprotocolexecution)
  * [OnRendererProcessTerminated](api/RequestHandler.md#onrendererprocessterminated)
* [ResourceHandler (interface)](api/ResourceHandler.md#resourcehandler-interface)
  * [ProcessRequest](api/ResourceHandler.md#processrequest)
  * [GetResponseHeaders](api/ResourceHandler.md#getresponseheaders)
  * [ReadResponse](api/ResourceHandler.md#readresponse)
  * [Cancel](api/ResourceHandler.md#cancel)
* [Response (object)](api/Response.md#response-object)
  * [IsReadOnly](api/Response.md#isreadonly)
  * [GetStatus](api/Response.md#getstatus)
  * [SetStatus](api/Response.md#setstatus)
  * [GetStatusText](api/Response.md#getstatustext)
  * [SetStatusText](api/Response.md#setstatustext)
  * [GetMimeType](api/Response.md#getmimetype)
  * [SetMimeType](api/Response.md#setmimetype)
  * [GetHeaderByName](api/Response.md#getheaderbyname)
  * [GetHeaderMap](api/Response.md#getheadermap)
  * [GetHeaderMultimap](api/Response.md#getheadermultimap)
  * [SetHeaderMap](api/Response.md#setheadermap)
  * [SetHeaderMultimap](api/Response.md#setheadermultimap)
* [StringVisitor (interface)](api/StringVisitor.md#stringvisitor-interface)
  * [Visit](api/StringVisitor.md#visit)
* [V8ContextHandler (interface)](api/V8ContextHandler.md#v8contexthandler-interface)
  * [OnContextCreated](api/V8ContextHandler.md#oncontextcreated)
  * [OnContextReleased](api/V8ContextHandler.md#oncontextreleased)
* [Virtual Key codes](api/VirtualKey.md#virtual-key-codes)
* [WebRequest (class)](api/WebRequest.md#webrequest-class)
  * [Create](api/WebRequest.md#create)
  * [GetRequest](api/WebRequest.md#getrequest)
  * [GetRequestStatus](api/WebRequest.md#getrequeststatus)
  * [GetRequestError](api/WebRequest.md#getrequesterror)
  * [GetResponse](api/WebRequest.md#getresponse)
  * [Cancel](api/WebRequest.md#cancel)
* [WebRequestClient (interface)](api/WebRequestClient.md#webrequestclient-interface)
  * [OnUploadProgress](api/WebRequestClient.md#onuploadprogress)
  * [OnDownloadProgress](api/WebRequestClient.md#ondownloadprogress)
  * [OnDownloadData](api/WebRequestClient.md#ondownloaddata)
  * [OnRequestComplete](api/WebRequestClient.md#onrequestcomplete)
* [WindowInfo (class)](api/WindowInfo.md#windowinfo-class)
  * [SetAsChild](api/WindowInfo.md#setaschild)
  * [SetAsPopup](api/WindowInfo.md#setaspopup)
  * [SetAsOffscreen](api/WindowInfo.md#setasoffscreen)
* [WindowUtils (class)](api/WindowUtils.md#windowutils-class)
  * [OnSetFocus ](api/WindowUtils.md#onsetfocus-win)
  * [OnSize ](api/WindowUtils.md#onsize-win)
  * [OnEraseBackground ](api/WindowUtils.md#onerasebackground-win)
  * [SetTitle ](api/WindowUtils.md#settitle-win)
  * [SetIcon ](api/WindowUtils.md#seticon-win)
  * [GetParentHandle](api/WindowUtils.md#getparenthandle)
  * [IsWindowHandle](api/WindowUtils.md#iswindowhandle)
  * [gtk_plug_new ](api/WindowUtils.md#gtk_plug_new-linux)
  * [gtk_widget_show ](api/WindowUtils.md#gtk_widget_show-linux)
  * [InstallX11ErrorHandlers ](api/WindowUtils.md#installx11errorhandlers-linux)