Enum ContextScopeError 

#[non_exhaustive]
pub enum ContextScopeError {
    Activation(ContextActivationReason),
    FrameLeftOpen,
    ContextUnavailable(ContextBindingError),
}

Failure to enter or finish a temporary active-Context scope.

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Activation(ContextActivationReason)

The Context could not be made current before the closure ran.

FrameLeftOpen

The closure returned success while leaving a Dear ImGui frame open.

ContextUnavailable(ContextBindingError)

The Context became unavailable while entering its binding capability.

Safe ownership normally keeps the Context available. This variant preserves a binding failure caused by teardown or raw/unsafe lifecycle interference instead of panicking.

Implementations

impl ContextScopeError

pub fn activation_reason(self) -> Option<ContextActivationReason>

Returns the activation rejection reason, if the closure was not entered.

Trait Implementations

impl Clone for ContextScopeError

fn clone(&self) -> ContextScopeError

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ContextScopeError

impl Debug for ContextScopeError

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

Formats the value using the given formatter.

impl Display for ContextScopeError

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

Formats the value using the given formatter.

impl Eq for ContextScopeError

impl Error for ContextScopeError

fn source(&self) -> Option<&(dyn Error + 'static)>

Returns the lower-level source of this error, if any.

fn description(&self) -> &str

👎Deprecated since 1.42.0:

use the Display impl or to_string()

fn cause(&self) -> Option<&dyn Error>

👎Deprecated since 1.33.0:

replaced by Error::source, which can support downcasting

fn provide<'a>(&'a self, request: &mut Request<'a>)

🔬This is a nightly-only experimental API. (error_generic_member_access)

Provides type-based access to context intended for error reports.

impl<E> From<ContextScopeError> for ScopedActivationError<E>

fn from(error: ContextScopeError) -> Self

Converts to this type from the input type.

impl PartialEq for ContextScopeError

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ContextScopeError