Experimental Globals

Note

This reference is no longer being maintained. For the latest API reference, see WebView2 API Reference.

Note

This an experimental API that is shipped with our prerelease SDK. See WebView2 release notes.

Summary

Members	Descriptions
COREWEBVIEW2_CHANNEL_SEARCH_KIND	The channel search kind determines the order that release channels are searched for during environment creation.
COREWEBVIEW2_NON_CLIENT_REGION_KIND	This enum contains values representing possible regions a given point lies within.
COREWEBVIEW2_RELEASE_CHANNELS	The WebView2 release channels.
COREWEBVIEW2_TEXT_DIRECTION_KIND	Indicates the text direction of the notification.
COREWEBVIEW2_TEXTURE_STREAM_ERROR_KIND	Kinds of errors that can be reported by the ICoreWebView2ExperimentalTextureStream ErrorReceived event.
COREWEBVIEW2_UPDATE_RUNTIME_STATUS	Status of UpdateRuntime operation result.
GetAvailableCoreWebView2BrowserVersionStringWithOptions	This function will tell you the browser version info of the release channel used when creating an environment with the same options.

Members

COREWEBVIEW2_CHANNEL_SEARCH_KIND

enum COREWEBVIEW2_CHANNEL_SEARCH_KIND

Values	Descriptions
COREWEBVIEW2_CHANNEL_SEARCH_KIND_MOST_STABLE	Search for a release channel from most to least stable: WebView2 Runtime -> Beta -> Dev -> Canary.
COREWEBVIEW2_CHANNEL_SEARCH_KIND_LEAST_STABLE	Search for a release channel from least to most stable: Canary -> Dev -> Beta -> WebView2 Runtime.

The channel search kind determines the order that release channels are searched for during environment creation.

The default behavior is to search for and use the most stable channel found on the device. The order from most to least stable is: WebView2 Runtime -> Beta -> Dev -> Canary. Switch the order to prefer the least stable channel in order to perform pre-release testing. See COREWEBVIEW2_RELEASE_CHANNELS for descriptions of channels.

COREWEBVIEW2_NON_CLIENT_REGION_KIND

enum COREWEBVIEW2_NON_CLIENT_REGION_KIND

Values	Descriptions
COREWEBVIEW2_NON_CLIENT_REGION_KIND_NOWHERE	A hit test region out of bounds of the WebView2.
COREWEBVIEW2_NON_CLIENT_REGION_KIND_CLIENT	A hit test region in the WebView2 which does not have the CSS style -webkit-app-region: drag set.
COREWEBVIEW2_NON_CLIENT_REGION_KIND_CAPTION	A hit test region in the WebView2 which has the CSS style -webkit-app-region: drag set.

This enum contains values representing possible regions a given point lies within.

COREWEBVIEW2_RELEASE_CHANNELS

enum COREWEBVIEW2_RELEASE_CHANNELS

Values	Descriptions
COREWEBVIEW2_RELEASE_CHANNELS_NONE	No release channel.
COREWEBVIEW2_RELEASE_CHANNELS_STABLE	The stable WebView2 Runtime that is released every 4 weeks.
COREWEBVIEW2_RELEASE_CHANNELS_BETA	The Beta release channel that is released every 4 weeks, a week before the stable release.
COREWEBVIEW2_RELEASE_CHANNELS_DEV	The Dev release channel that is released weekly.
COREWEBVIEW2_RELEASE_CHANNELS_CANARY	The Canary release channel that is released daily.

The WebView2 release channels.

Use ReleaseChannels and ChannelSearchKind on ICoreWebView2EnvironmentOptions to control which channel is searched for during environment creation. Channel |Primary purpose |How often updated with new features --------- | --------- | --------- Stable (WebView2 Runtime) |Broad Deployment |Monthly Beta |Flighting with inner rings, automated testing |Monthly Dev |Automated testing, selfhosting to test new APIs and features |Weekly Canary |Automated testing, selfhosting to test new APIs and features |Daily

COREWEBVIEW2_MATRIX_4X4

Matrix that represents a 3D transform.

typedef COREWEBVIEW2_MATRIX_4X4 This transform is used to calculate correct coordinates when calling CreateCoreWebView2PointerInfoFromPointerId. This is equivalent to a D2D1_MATRIX_4X4_F

COREWEBVIEW2_TEXT_DIRECTION_KIND

enum COREWEBVIEW2_TEXT_DIRECTION_KIND

Values	Descriptions
COREWEBVIEW2_TEXT_DIRECTION_KIND_DEFAULT	Indicates that the notification text direction adopts the browser's language setting behavior.
COREWEBVIEW2_TEXT_DIRECTION_KIND_LEFT_TO_RIGHT	Indicates that the notification text is left-to-right.
COREWEBVIEW2_TEXT_DIRECTION_KIND_RIGHT_TO_LEFT	Indicates that the notification text is right-to-left.

Indicates the text direction of the notification.

COREWEBVIEW2_TEXTURE_STREAM_ERROR_KIND

enum COREWEBVIEW2_TEXTURE_STREAM_ERROR_KIND

Values	Descriptions
COREWEBVIEW2_TEXTURE_STREAM_ERROR_NO_VIDEO_TRACK_STARTED	CreateTexture/PresentTexture and so on should return failed HRESULT if the texture stream is in the stopped state rather than using the error event.
COREWEBVIEW2_TEXTURE_STREAM_ERROR_TEXTURE_ERROR	The texture already has been removed using CloseTexture.
COREWEBVIEW2_TEXTURE_STREAM_ERROR_TEXTURE_IN_USE	The texture to be presented is already in use for rendering.

Kinds of errors that can be reported by the ICoreWebView2ExperimentalTextureStream ErrorReceived event.

COREWEBVIEW2_UPDATE_RUNTIME_STATUS

enum COREWEBVIEW2_UPDATE_RUNTIME_STATUS

Values	Descriptions
COREWEBVIEW2_UPDATE_RUNTIME_STATUS_LATEST_VERSION_INSTALLED	Latest version of Edge WebView2 Runtime is installed.
COREWEBVIEW2_UPDATE_RUNTIME_STATUS_UPDATE_ALREADY_RUNNING	Edge WebView2 Runtime update is already running, which could be triggered by auto update or by other UpdateRuntime request from some app.
COREWEBVIEW2_UPDATE_RUNTIME_STATUS_BLOCKED_BY_POLICY	Edge WebView2 Runtime update is blocked by group policy.
COREWEBVIEW2_UPDATE_RUNTIME_STATUS_FAILED	Edge WebView2 Runtime update failed.

Status of UpdateRuntime operation result.

GetAvailableCoreWebView2BrowserVersionStringWithOptions

public STDAPI GetAvailableCoreWebView2BrowserVersionStringWithOptions(PCWSTR browserExecutableFolder, ICoreWebView2EnvironmentOptions * environmentOptions, LPWSTR * versionInfo)

This function will tell you the browser version info of the release channel used when creating an environment with the same options.

Browser version info includes channel name if it is not the WebView2 Runtime. Channel names are Beta, Dev, and Canary. The format of the return string matches the format of BrowserVersionString on ICoreWebView2Environment.

If an override exists for browserExecutableFolder, releaseChannels, or ChannelSearchKind, the override is used. The presence of an override can result in a different channel used than the one expected based on the environment options object. browserExecutableFolder takes precedence over the other options, regardless of whether or not its channel is included in the releaseChannels. See CreateCoreWebView2EnvironmentWithOptions for more details on overrides. If an override is not specified, then the parameters passed to GetAvailableCoreWebView2BrowserVersionStringWithOptions are used. Returns HRESULT_FROM_WIN32(ERROR_FILE_NOT_FOUND) if it fails to find an installed WebView2 Runtime or non-stable Microsoft Edge installation. Use GetAvailableCoreWebView2BrowserVersionString to get the version info without the environment options.

The caller must free the returned string with CoTaskMemFree. See API Conventions.