枚举 Direction 

pub enum Direction {
    Press,
    Release,
    Click,
}

按键或按钮的方向

变体

Press

Release

Click

相当于按下后立即释放

trait 实现

impl Clone for Direction

fn clone(&self) -> Direction

返回值的副本。 阅读更多

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

Performs copy-assignment from source. 阅读更多

impl Debug for Direction

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

使用给定的格式化器格式化该值。 阅读更多

impl Default for Direction

fn default() -> Direction

Returns the “default value” for a type. 阅读更多

impl Hash for Direction

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. 阅读更多

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. 阅读更多

impl PartialEq for Direction

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

测试 self 与 other 值是否相等，供 == 运算符使用。

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

测试 != 运算符。默认实现几乎总是够用，除非有非常充分的理由，否则不应被覆盖。

impl Copy for Direction

impl Eq for Direction

impl StructuralPartialEq for Direction