/// Chrome strip slot — the system-level titlebar/menubar at the top of the window.
////// Managed internally by `LayoutManager`; app developers configure it via
/// `layout_manager.chrome_mut()` but do not add/remove it at runtime.
#[derive(Debug, Clone)]pubstructChromeSlot{/// Preferred height in logical pixels (default 32 px).
pubheight:f32,
/// Whether the chrome strip is currently visible.
/// When `false`, chrome contributes zero height to layout.
pubvisible:bool,
}implDefault forChromeSlot{fndefault()->Self{Self{ height:32.0, visible:true}}}