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ControlFlow

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Enum ControlFlow 

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pub enum ControlFlow {
    Poll,
    Wait,
    WaitUntil(Instant),
}
Expand description

Set through ActiveEventLoop::set_control_flow().

Indicates the desired behavior of the event loop after about_to_wait is called.

Defaults to Wait.

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Poll

When the current loop iteration finishes, immediately begin a new iteration regardless of whether or not new events are available to process.

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Wait

When the current loop iteration finishes, suspend the thread until another event arrives.

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WaitUntil(Instant)

When the current loop iteration finishes, suspend the thread until either another event arrives or the given time is reached.

Useful for implementing efficient timers. Applications which want to render at the display’s native refresh rate should instead use Poll and the VSync functionality of a graphics API to reduce odds of missed frames.

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impl ControlFlow

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pub fn wait_duration(timeout: Duration) -> ControlFlow

Creates a ControlFlow that waits until a timeout has expired.

In most cases, this is set to WaitUntil. However, if the timeout overflows, it is instead set to Wait.

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impl Clone for ControlFlow

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fn clone(&self) -> ControlFlow

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

Performs copy-assignment from source. Read more
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impl Copy for ControlFlow

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impl Debug for ControlFlow

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

Formats the value using the given formatter. Read more
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impl Default for ControlFlow

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fn default() -> ControlFlow

Returns the “default value” for a type. Read more
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impl Eq for ControlFlow

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impl Hash for ControlFlow

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

Feeds this value into the given Hasher. Read more
1.3.0 · Source§

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

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for ControlFlow

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

Equality operator ==. Read more
1.0.0 (const: unstable) · Source§

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

Inequality operator !=. Read more
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impl StructuralPartialEq for ControlFlow

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impl<T> Any for T
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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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Immutably borrows from an owned value. Read more
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
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Convert &Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &Any’s vtable from &Trait’s.
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Convert &mut Trait (where Trait: Downcast) to &Any. This is needed since Rust cannot generate &mut Any’s vtable from &mut Trait’s.
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Compare self to key and return true if they are equal.
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fn equivalent(&self, key: &K) -> bool

Checks if this value is equivalent to the given key. Read more
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const ALIGN: usize

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