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interface ICoreWebView2NewWindowRequestedEventArgs

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Note

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

interface ICoreWebView2NewWindowRequestedEventArgs
  : public IUnknown

Event args for the NewWindowRequested event.

Summary

Members Descriptions
get_Handled Gets whether the NewWindowRequested event is handled by host.
get_IsUserInitiated TRUE when the new window request was initiated through a user gesture.
get_NewWindow Gets the new window.
get_Uri The target uri of the new window requested.
get_WindowFeatures Window features specified by the window.open.
GetDeferral Obtain an ICoreWebView2Deferral object and put the event into a deferred state.
put_Handled Sets whether the NewWindowRequested event is handled by host.
put_NewWindow Sets a CoreWebView2 as a result of the NewWindowRequested event.

The event is run when content inside webview requested to a open a new window (through window.open() and so on).

Applies to

Product Introduced
WebView2 Win32 0.9.430
WebView2 Win32 Prerelease 0.9.488

Members

get_Handled

Gets whether the NewWindowRequested event is handled by host.

public HRESULT get_Handled(BOOL * handled)

get_IsUserInitiated

TRUE when the new window request was initiated through a user gesture.

public HRESULT get_IsUserInitiated(BOOL * isUserInitiated)

Examples of user initiated requests are:

  • Selecting an anchor tag with target

  • Programmatic window open from a script that directly run as a result of user interaction such as via onclick handlers.

Non-user initiated requests are programmatic window opens from a script that are not directly triggered by user interaction, such as those that run while loading a new page or via timers. The Microsoft Edge popup blocker is disabled for WebView so the app is able to use this flag to block non-user initiated popups.

get_NewWindow

Gets the new window.

public HRESULT get_NewWindow(ICoreWebView2 ** newWindow)

get_Uri

The target uri of the new window requested.

public HRESULT get_Uri(LPWSTR * uri)

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

get_WindowFeatures

Window features specified by the window.open.

public HRESULT get_WindowFeatures(ICoreWebView2WindowFeatures ** value)

The features should be considered for positioning and sizing of new webview windows.

GetDeferral

Obtain an ICoreWebView2Deferral object and put the event into a deferred state.

public HRESULT GetDeferral(ICoreWebView2Deferral ** deferral)

Use the ICoreWebView2Deferral object to complete the window open request at a later time. While this event is deferred the opener window returns a WindowProxy to an un-navigated window, which navigates when the deferral is complete.

put_Handled

Sets whether the NewWindowRequested event is handled by host.

public HRESULT put_Handled(BOOL handled)

If this is FALSE and no NewWindow is set, the WebView opens a popup window and it returns as opened WindowProxy. If set to TRUE and no NewWindow is set for window.open, the opened WindowProxy is for an testing window object and no window loads. The default value is FALSE.

put_NewWindow

Sets a CoreWebView2 as a result of the NewWindowRequested event.

public HRESULT put_NewWindow(ICoreWebView2 * newWindow)

Provides a WebView as the target for a window.open() from inside the requesting WebView. If this is set, the top-level window of this WebView is returned as the opened WindowProxy to the opener script. If this is not set, then Handled is checked to determine behavior for NewWindowRequested event. CoreWebView2 provided in the NewWindow property must be on the same Environment as the opener WebView and should not have been navigated previously. Don't use methods that cause navigation or interact with the DOM on this CoreWebView2 until the target content has loaded. Setting event handlers, changing Settings properties, or other methods are fine to call. Changes to settings should be made before put_NewWindow is called to ensure that those settings take effect for the newly setup WebView. Once the NewWindow is set the underlying web contents of this CoreWebView2 will be replaced and navigated as appropriate for the new window. After setting new window it cannot be changed and error will be return otherwise.

The methods which should affect the new web contents like AddScriptToExecuteOnDocumentCreated has to be called and completed before setting NewWindow. Other methods which should affect the new web contents like add_WebResourceRequested have to be called after setting NewWindow. It is best not to use RemoveScriptToExecuteOnDocumentCreated before setting NewWindow, otherwise it may not work for later added scripts.

The new WebView must have the same profile as the opener WebView.