Struct PendingApp 

pub struct PendingApp<AppMessage>
where
    AppMessage: Message,
{ /* private fields */ }

An application that is not yet running.

Implementations

impl PendingApp<()>

pub fn new() -> Self

Returns a new app with no windows. If no windows are opened before the app is run, the app will immediately close.

impl<AppMessage> PendingApp<AppMessage>

where AppMessage: Message,

pub fn new_with_event_callback( event_callback: impl FnMut(AppMessage, ExecutingApp<'_, AppMessage>) -> AppMessage::Response + 'static, ) -> Self

Returns a new app with no windows. If no windows are opened before the app is run, the app will immediately close.

pub fn on_startup<F>(&mut self, on_startup: F)

where F: FnOnce(ExecutingApp<'_, AppMessage>) + Send + 'static,

Executes on_startup once the app event loop has started.

This is useful because some information provided by winit is only available after the event loop has started. For example, to enter an exclusive full screen mode, monitor information must be accessed which requires the event loop to have been started.

pub fn run(self) -> Result<(), EventLoopError>

Begins running the application.

Internally this runs the EventLoop.

Errors

Returns an EventLoopError upon the loop exiting due to an error. See EventLoop::run for more information.

Trait Implementations

impl<AppMessage> Application<AppMessage> for PendingApp<AppMessage>

where AppMessage: Message,

fn app(&self) -> App<AppMessage>

Returns a handle to the running application.

fn send( &mut self, message: AppMessage, ) -> Option<<AppMessage as Message>::Response>

Sends an app message to the main event loop to be handled by the callback provided when the app was created.

impl<AppMessage> AsApplication<AppMessage> for PendingApp<AppMessage>

where AppMessage: Message,

fn as_application(&self) -> &dyn Application<AppMessage>

where AppMessage: Message,

Returns this type’s application.

fn as_application_mut(&mut self) -> &mut dyn Application<AppMessage>

where AppMessage: Message,

Returns this type’s application.

impl Default for PendingApp<()>

fn default() -> Self

Returns the “default value” for a type.