Function dispatch_event 

pub fn dispatch_event(
    comp_type: &str,
    ctx: &ComponentContext<'_>,
    event: &InputEvent,
) -> Option<EventResult>

Route a key-press event to the named component type’s [handle_event].

Returns None for types without a shared handler (unknown types, non-interactive types like Text/Column, or the backend-specific interactive types listed in the module docs). Callers build a ComponentContext for the target component, then call this.