Function frame 

pub fn frame(
    backend: &mut impl Backend,
    state: &mut AppState,
    config: &RunConfig,
    events: &[Event],
    f: &mut impl FnMut(&mut Context),
) -> Result<bool>

Process a single UI frame with a custom Backend.

This is the low-level entry point for custom backends. For standard terminal usage, prefer run() or run_with() which handle the event loop, terminal setup, and teardown automatically.

Returns Ok(true) to continue, Ok(false) when Context::quit() was called.

Arguments

• backend — Your Backend implementation
• state — Persistent AppState (reuse across frames)
• config — RunConfig (theme, tick rate, etc.)
• events — Input events for this frame (keyboard, mouse, resize)
• f — Your UI closure, called once per frame

Example

let keep_going = slt::frame(
    &mut my_backend,
    &mut state,
    &config,
    &events,
    &mut |ui| { ui.text("hello"); },
)?;