Trait webview2_sys::ICoreWebView2Controller2

pub trait ICoreWebView2Controller2: ICoreWebView2Controller {
    unsafe fn get_default_background_color(
        &self, 
        background_color: *mut Color
    ) -> HRESULT;
    unsafe fn put_default_background_color(
        &self, 
        background_color: Color
    ) -> HRESULT;
}

A continuation of the ICoreWebView2Controller interface

Required methods

unsafe fn get_default_background_color(
    &self,
    background_color: *mut Color
) -> HRESULT

The DefaultBackgroundColor property allows developers to set the color that shows when WebView has not loaded any web content and when a webpage does not specify a background color. Color is specified by the COREWEBVIEW2_COLOR value meaning the background color can also be transparent. The WebView background color will show before the initial navigation, between navigations before the next page has rendered, and for pages with no background style properties set. To clarify the latter case, WebView will always honor a webpage’s background content. DefaultBackgroundColor will only show in the absence of css background style properties. In that case, WebView will render web content over the DefaultBackgroundColor color. For a transparent background, web content will render over hosting app content. WebView’s default background color is white to resemble the browser experience. It is important to note that while COREWEBVIEW2_COLOR has A an alpha value, semi-transparent colors are not supported by this API and setting DefaultBackgroundColor to a semi-transparent color will fail with E_INVALIDARG. The only supported alpha values are 0 and 255, all other values will result in E_INVALIDARG. DefaultBackgroundColor can only be an opaque color or transparent.

The DefaultBackgroundColor property enables a smoother UI experience. Developers can choose the color that shows between loading pages and eliminate any ‘white flash.’ For websites with no specified background color, developers can display web contents over a color of their choosing. They can also do away with the background color entirely with transparency and have the ‘in between pages color’ just be hosting content, or have hosting app content be the backdrop for webpages without a background color specified.

\snippet ViewComponent.cpp DefaultBackgroundColor

unsafe fn put_default_background_color(
    &self,
    background_color: Color
) -> HRESULT

Sets the DefaultBackgroundColor property.

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Trait Implementations

impl ComInterface for dyn ICoreWebView2Controller2

type VTable = ICoreWebView2Controller2VTable

A COM compatible V-Table

type Super = dyn ICoreWebView2Controller

The interface that this interface inherits from

const IID: IID

The associated id for this interface

pub fn is_iid_in_inheritance_chain(riid: &GUID) -> bool

Check whether a given IID is in the inheritance hierarchy of this interface

impl<C: ICoreWebView2Controller2> ProductionComInterface<C> for dyn ICoreWebView2Controller2

fn vtable<O: Offset>() -> Self::VTable

Get the vtable for a particular COM interface

Implementations on Foreign Types

impl<T: ICoreWebView2Controller2 + ComInterface + ?Sized> ICoreWebView2Controller2 for ComRc<T>

unsafe fn get_default_background_color(
    &self,
    background_color: *mut Color
) -> HRESULT

unsafe fn put_default_background_color(
    &self,
    background_color: Color
) -> HRESULT

impl<T: ICoreWebView2Controller2 + ComInterface + ?Sized> ICoreWebView2Controller2 for ComPtr<T>

unsafe fn get_default_background_color(
    &self,
    background_color: *mut Color
) -> HRESULT

unsafe fn put_default_background_color(
    &self,
    background_color: Color
) -> HRESULT

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Implementors

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