Struct zaplib::ComponentId

#[repr(C)]
pub struct ComponentId(_);

Identifier that represents a particular “component” on the screen, even if it gets moved around or disappears temporarily.

This identity gets used mostly in eventing, e.g. Event::hits_pointer, Event::hits_keyboard, and Cx::set_key_focus.

It’s 32-bit, so you can use it in instance data and then read it out again, either directly or when by using Area::get_slice or Area::get_first.

Trait Implementations

impl Clone for ComponentId

fn clone(&self) -> ComponentId

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ComponentId

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ComponentId

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq<ComponentId> for ComponentId

fn eq(&self, other: &ComponentId) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &ComponentId) -> bool

This method tests for !=.

impl Copy for ComponentId

impl StructuralPartialEq for ComponentId