interface ICoreWebView2Settings
Note
This reference is no longer being maintained. For the latest API reference, see WebView2 API Reference.
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)