Trait ActiveEventLoop

Source

pub trait ActiveEventLoop: AsAny + Debug {
Show 13 methods    // Required methods
    fn create_proxy(&self) -> EventLoopProxy;
    fn create_window(
        &self,
        window_attributes: WindowAttributes,
    ) -> Result<Box<dyn Window>, RequestError>;
    fn create_custom_cursor(
        &self,
        custom_cursor: CustomCursorSource,
    ) -> Result<CustomCursor, RequestError>;
    fn available_monitors(&self) -> Box<dyn Iterator<Item = MonitorHandle>>;
    fn primary_monitor(&self) -> Option<MonitorHandle>;
    fn listen_device_events(&self, allowed: DeviceEvents);
    fn system_theme(&self) -> Option<Theme>;
    fn set_control_flow(&self, control_flow: ControlFlow);
    fn control_flow(&self) -> ControlFlow;
    fn exit(&self);
    fn exiting(&self) -> bool;
    fn owned_display_handle(&self) -> OwnedDisplayHandle;
    fn rwh_06_handle(&self) -> &dyn HasDisplayHandle;
}

Required Methods§

Source

fn create_proxy(&self) -> EventLoopProxy

Creates an EventLoopProxy that can be used to dispatch user events to the main event loop, possibly from another thread.

Source

fn create_window( &self, window_attributes: WindowAttributes, ) -> Result<Box<dyn Window>, RequestError>

Create the window.

Possible causes of error include denied permission, incompatible system, and lack of memory.

§Platform-specific

Web: The window is created but not inserted into the Web page automatically. Please see the Web platform module for more information.

Source

fn create_custom_cursor( &self, custom_cursor: CustomCursorSource, ) -> Result<CustomCursor, RequestError>

Create custom cursor.

§Platform-specific

iOS / Android / Orbital: Unsupported.

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fn available_monitors(&self) -> Box<dyn Iterator<Item = MonitorHandle>>

Returns the list of all the monitors available on the system.

§Platform-specific

Web: Only returns the current monitor without detailed monitor permissions.

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fn primary_monitor(&self) -> Option<MonitorHandle>

Returns the primary monitor of the system.

Returns None if it can’t identify any monitor as a primary one.

§Platform-specific

Wayland: Always returns None.
Web: Always returns None without detailed monitor permissions.

Source

fn listen_device_events(&self, allowed: DeviceEvents)

Change if or when DeviceEvents are captured.

Since the DeviceEvent capture can lead to high CPU usage for unfocused windows, winit will ignore them by default for unfocused windows on Linux/BSD. This method allows changing this at runtime to explicitly capture them again.