interface ICoreWebView2Settings

interface ICoreWebView2Settings
  : public IUnknown

Defines properties that enable, disable, or modify WebView features.

Summary

Members Descriptions
get_AreDefaultContextMenusEnabled The AreDefaultContextMenusEnabled property is used to prevent default context menus from being shown to user in WebView.
get_AreDefaultScriptDialogsEnabled AreDefaultScriptDialogsEnabled is used when loading a new HTML document.
get_AreDevToolsEnabled AreDevToolsEnabled controls whether the user is able to use the context menu or keyboard shortcuts to open the DevTools window.
get_AreHostObjectsAllowed The AreHostObjectsAllowed property is used to control whether host objects are accessible from the page in WebView.
get_IsBuiltInErrorPageEnabled The IsBuiltInErrorPageEnabled property is used to disable built in error page for navigation failure and render process failure.
get_IsScriptEnabled Controls if running JavaScript is enabled in all future navigations in the WebView.
get_IsStatusBarEnabled IsStatusBarEnabled controls whether the status bar is displayed.
get_IsWebMessageEnabled The IsWebMessageEnabled property is used when loading a new HTML document.
get_IsZoomControlEnabled The IsZoomControlEnabled property is used to prevent the user from impacting the zoom of the WebView.
put_AreDefaultContextMenusEnabled Sets the AreDefaultContextMenusEnabled property.
put_AreDefaultScriptDialogsEnabled Sets the AreDefaultScriptDialogsEnabled property.
put_AreDevToolsEnabled Sets the AreDevToolsEnabled property.
put_AreHostObjectsAllowed Sets the AreHostObjectsAllowed property.
put_IsBuiltInErrorPageEnabled Sets the IsBuiltInErrorPageEnabled property.
put_IsScriptEnabled Sets the IsScriptEnabled property.
put_IsStatusBarEnabled Sets the IsStatusBarEnabled property.
put_IsWebMessageEnabled Sets the IsWebMessageEnabled property.
put_IsZoomControlEnabled Sets the IsZoomControlEnabled property.

Setting changes made after NavigationStarting event does not apply until the next top-level navigation.

Applies to

Product Introduced
WebView2 Win32 0.9.430
WebView2 Win32 Prerelease 0.9.488

Members

get_AreDefaultContextMenusEnabled

The AreDefaultContextMenusEnabled property is used to prevent default context menus from being shown to user in WebView.

public HRESULT get_AreDefaultContextMenusEnabled(BOOL * enabled)

The default value is TRUE.

            BOOL allowContextMenus;
            CHECK_FAILURE(m_settings->get_AreDefaultContextMenusEnabled(&allowContextMenus));
            if (allowContextMenus)
            {
                CHECK_FAILURE(m_settings->put_AreDefaultContextMenusEnabled(FALSE));
                MessageBox(
                    nullptr, L"Context menus will be disabled after the next navigation.",
                    L"Settings change", MB_OK);
            }
            else
            {
                CHECK_FAILURE(m_settings->put_AreDefaultContextMenusEnabled(TRUE));
                MessageBox(
                    nullptr, L"Context menus will be enabled after the next navigation.",
                    L"Settings change", MB_OK);
            }

get_AreDefaultScriptDialogsEnabled

AreDefaultScriptDialogsEnabled is used when loading a new HTML document.

public HRESULT get_AreDefaultScriptDialogsEnabled(BOOL * areDefaultScriptDialogsEnabled)

If set to FALSE, WebView2 does not render the default JavaScript dialog box (Specifically those displayed by the JavaScript alert, confirm, prompt functions and beforeunload event). Instead, if an event handler is set using add_ScriptDialogOpening, WebView sends an event that contains all of the information for the dialog and allow the host app to show a custom UI. The default value is TRUE.

get_AreDevToolsEnabled

AreDevToolsEnabled controls whether the user is able to use the context menu or keyboard shortcuts to open the DevTools window.

public HRESULT get_AreDevToolsEnabled(BOOL * areDevToolsEnabled)

The default value is TRUE.

get_AreHostObjectsAllowed

The AreHostObjectsAllowed property is used to control whether host objects are accessible from the page in WebView.

public HRESULT get_AreHostObjectsAllowed(BOOL * allowed)

The default value is TRUE.

            BOOL allowHostObjects;
            CHECK_FAILURE(m_settings->get_AreHostObjectsAllowed(&allowHostObjects));
            if (allowHostObjects)
            {
                CHECK_FAILURE(m_settings->put_AreHostObjectsAllowed(FALSE));
                MessageBox(
                    nullptr,
                    L"Access to host objects will be denied after the next navigation.",
                    L"Settings change", MB_OK);
            }
            else
            {
                CHECK_FAILURE(m_settings->put_AreHostObjectsAllowed(TRUE));
                MessageBox(
                    nullptr,
                    L"Access to host objects will be allowed after the next navigation.",
                    L"Settings change", MB_OK);
            }

get_IsBuiltInErrorPageEnabled

The IsBuiltInErrorPageEnabled property is used to disable built in error page for navigation failure and render process failure.

public HRESULT get_IsBuiltInErrorPageEnabled(BOOL * enabled)

When disabled, a blank page is displayed when the related error happens. The default value is TRUE.

            BOOL enabled;
            CHECK_FAILURE(m_settings->get_IsBuiltInErrorPageEnabled(&enabled));
            if (enabled)
            {
                CHECK_FAILURE(m_settings->put_IsBuiltInErrorPageEnabled(FALSE));
                MessageBox(
                    nullptr, L"Built-in error page will be disabled for future navigation.",
                    L"Settings change", MB_OK);
            }
            else
            {
                CHECK_FAILURE(m_settings->put_IsBuiltInErrorPageEnabled(TRUE));
                MessageBox(
                    nullptr, L"Built-in error page will be enabled for future navigation.",
                    L"Settings change", MB_OK);
            }

get_IsScriptEnabled

Controls if running JavaScript is enabled in all future navigations in the WebView.

public HRESULT get_IsScriptEnabled(BOOL * isScriptEnabled)

This only affects scripts in the document. Scripts injected with ExecuteScript runs even if script is disabled. The default value is TRUE.

                // Changes to settings will apply at the next navigation, which includes the
                // navigation after a NavigationStarting event.  We can use this to change
                // settings according to what site we're visiting.
                if (ShouldBlockScriptForUri(uri.get()))
                {
                    m_settings->put_IsScriptEnabled(FALSE);
                }
                else
                {
                    m_settings->put_IsScriptEnabled(m_isScriptEnabled);
                }

get_IsStatusBarEnabled

IsStatusBarEnabled controls whether the status bar is displayed.

public HRESULT get_IsStatusBarEnabled(BOOL * isStatusBarEnabled)

The status bar is usually displayed in the lower left of the WebView and shows things such as the URI of a link when the user hovers over it and other information. The default value is TRUE.

get_IsWebMessageEnabled

The IsWebMessageEnabled property is used when loading a new HTML document.

public HRESULT get_IsWebMessageEnabled(BOOL * isWebMessageEnabled)

If set to TRUE, communication from the host to the top-level HTML document of the WebView is allowed using PostWebMessageAsJson, PostWebMessageAsString, and message event of window.chrome.webview. For more information, navigate to [PostWebMessageAsJson]. Communication from the top-level HTML document of the WebView to the host is allowed using the postMessage function of window.chrome.webview and add_WebMessageReceived method. For more information, navigate to [add_WebMessageReceived]. If set to false, then communication is disallowed. PostWebMessageAsJson and PostWebMessageAsString fails with E_ACCESSDENIED and window.chrome.webview.postMessage fails by throwing an instance of an Error object. The default value is TRUE.

    ComPtr<ICoreWebView2Settings> settings;
    CHECK_FAILURE(m_webView->get_Settings(&settings));

    CHECK_FAILURE(settings->put_IsWebMessageEnabled(TRUE));

get_IsZoomControlEnabled

The IsZoomControlEnabled property is used to prevent the user from impacting the zoom of the WebView.

public HRESULT get_IsZoomControlEnabled(BOOL * enabled)

When disabled, the user is not able to zoom using Ctrl++, Ctrl+-, or Ctrl+mouse wheel, but the zoom is set using ZoomFactor API. The default value is TRUE.

            BOOL zoomControlEnabled;
            CHECK_FAILURE(m_settings->get_IsZoomControlEnabled(&zoomControlEnabled));
            if (zoomControlEnabled)
            {
                CHECK_FAILURE(m_settings->put_IsZoomControlEnabled(FALSE));
                MessageBox(
                    nullptr, L"Zoom control will be disabled after the next navigation.",
                    L"Settings change", MB_OK);
            }
            else
            {
                CHECK_FAILURE(m_settings->put_IsZoomControlEnabled(TRUE));
                MessageBox(
                    nullptr, L"Zoom control will be enabled after the next navigation.",
                    L"Settings change", MB_OK);
            }

put_AreDefaultContextMenusEnabled

Sets the AreDefaultContextMenusEnabled property.

public HRESULT put_AreDefaultContextMenusEnabled(BOOL enabled)

put_AreDefaultScriptDialogsEnabled

Sets the AreDefaultScriptDialogsEnabled property.

public HRESULT put_AreDefaultScriptDialogsEnabled(BOOL areDefaultScriptDialogsEnabled)

put_AreDevToolsEnabled

Sets the AreDevToolsEnabled property.

public HRESULT put_AreDevToolsEnabled(BOOL areDevToolsEnabled)

put_AreHostObjectsAllowed

Sets the AreHostObjectsAllowed property.

public HRESULT put_AreHostObjectsAllowed(BOOL allowed)

put_IsBuiltInErrorPageEnabled

Sets the IsBuiltInErrorPageEnabled property.

public HRESULT put_IsBuiltInErrorPageEnabled(BOOL enabled)

put_IsScriptEnabled

Sets the IsScriptEnabled property.

public HRESULT put_IsScriptEnabled(BOOL isScriptEnabled)

put_IsStatusBarEnabled

Sets the IsStatusBarEnabled property.

public HRESULT put_IsStatusBarEnabled(BOOL isStatusBarEnabled)

put_IsWebMessageEnabled

Sets the IsWebMessageEnabled property.

public HRESULT put_IsWebMessageEnabled(BOOL isWebMessageEnabled)

put_IsZoomControlEnabled

Sets the IsZoomControlEnabled property.

public HRESULT put_IsZoomControlEnabled(BOOL enabled)