Trait EventTarget 

pub trait EventTarget: Widget + Sized {
    // Provided methods
    fn on_fn(self, code: lv_event_code_t, handler: fn(EventCtx<'_>)) -> Self { ... }
    fn on_clicked(self, handler: fn(EventCtx<'_>)) -> Self { ... }
    fn on_value_change(self, handler: fn(EventCtx<'_>)) -> Self { ... }
    fn on_with<T: Send + Sync + 'static>(
        self,
        code: lv_event_code_t,
        handler: &'static EventHandler<T>,
    ) -> Self { ... }
    fn on_clicked_with<T: Send + Sync + 'static>(
        self,
        handler: &'static EventHandler<T>,
    ) -> Self { ... }
    fn on_value_change_with<T: Send + Sync + 'static>(
        self,
        handler: &'static EventHandler<T>,
    ) -> Self { ... }
}

Event callback registration. Uses fn pointers for no_std compatibility. Blanket-implemented for all Widget types.

Provided Methods

fn on_fn(self, code: lv_event_code_t, handler: fn(EventCtx<'_>)) -> Self

Register a stateless safe handler for any LVGL event code.

fn on_clicked(self, handler: fn(EventCtx<'_>)) -> Self

Register a stateless safe handler for click events.

fn on_value_change(self, handler: fn(EventCtx<'_>)) -> Self

Register a stateless safe handler for value-changed events.

fn on_with<T: Send + Sync + 'static>( self, code: lv_event_code_t, handler: &'static EventHandler<T>, ) -> Self

Register a stateful safe handler — the handler receives the shared state from the bundled InitCell and an EventCtx.

fn on_clicked_with<T: Send + Sync + 'static>( self, handler: &'static EventHandler<T>, ) -> Self

Stateful click handler (see EventTarget::on_with).

fn on_value_change_with<T: Send + Sync + 'static>( self, handler: &'static EventHandler<T>, ) -> Self

Stateful value-change handler (see EventTarget::on_with).

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementors

impl<T: Widget> EventTarget for T