Chromium Embedded Framework (CEF)  126.2.0+g5c56e98+chromium-126.0.6478.62
cef_types_runtime.h File Reference

Enumerations

enum  cef_runtime_style_t { CEF_RUNTIME_STYLE_DEFAULT , CEF_RUNTIME_STYLE_CHROME , CEF_RUNTIME_STYLE_ALLOY }
 CEF supports both a Chrome runtime (based on the Chrome UI layer) and an Alloy runtime (based on the Chromium content layer). More...
 

Enumeration Type Documentation

◆ cef_runtime_style_t

CEF supports both a Chrome runtime (based on the Chrome UI layer) and an Alloy runtime (based on the Chromium content layer).

The Chrome runtime provides the full Chrome UI and browser functionality whereas the Alloy runtime provides less default browser functionality but adds additional client callbacks and support for windowless (off-screen) rendering. For additional comparative details on runtime types see https://bitbucket.org/chromiumembedded/cef/wiki/Architecture.md#markdown-header-cef3

Each runtime is composed of a bootstrap component and a style component. The bootstrap component is configured via CefSettings.chrome_runtime and cannot be changed after CefInitialize. The style component is individually configured for each window/browser at creation time and, in combination with the Chrome bootstrap, different styles can be mixed during runtime.

Windowless rendering will always use Alloy style. Windowed rendering with a default window or client-provided parent window can configure the style via CefWindowInfo.runtime_style. Windowed rendering with the Views framework can configure the style via CefWindowDelegate::GetWindowRuntimeStyle and CefBrowserViewDelegate::GetBrowserRuntimeStyle. Alloy style Windows with the Views framework can host only Alloy style BrowserViews but Chrome style Windows can host both style BrowserViews. Additionally, a Chrome style Window can host at most one Chrome style BrowserView but potentially multiple Alloy style BrowserViews. See CefWindowInfo.runtime_style documentation for any additional platform-specific limitations.

Enumerator
CEF_RUNTIME_STYLE_DEFAULT 

Use the default runtime style.

The default style will match the CefSettings.chrome_runtime value in most cases. See above documentation for exceptions.

CEF_RUNTIME_STYLE_CHROME 

Use the Chrome runtime style.

Only supported with the Chrome runtime.

CEF_RUNTIME_STYLE_ALLOY 

Use the Alloy runtime style.

Supported with both the Alloy and Chrome runtime.