Struct qt_core::q_state::RestorePolicy

pub struct RestorePolicy(/* private fields */);

This enum specifies the restore policy type. The restore policy takes effect when the machine enters a state which sets one or more properties. If the restore policy is set to RestoreProperties, the state machine will save the original value of the property before the new value is set.

C++ enum: QState::RestorePolicy.

C++ documentation:

This enum specifies the restore policy type. The restore policy takes effect when the machine enters a state which sets one or more properties. If the restore policy is set to RestoreProperties, the state machine will save the original value of the property before the new value is set.

Later, when the machine either enters a state which does not set a value for the given property, the property will automatically be restored to its initial value.

Only one initial value will be saved for any given property. If a value for a property has already been saved by the state machine, it will not be overwritten until the property has been successfully restored.

See also QStateMachine::globalRestorePolicy and QState::assignProperty().

Implementations

impl RestorePolicy

pub fn to_int(&self) -> c_int

impl RestorePolicy

pub const DontRestoreProperties: RestorePolicy = _

The state machine should not save the initial values of properties and restore them later. (C++ enum variant: DontRestoreProperties = 0)

pub const RestoreProperties: RestorePolicy = _

The state machine should save the initial values of properties and restore them later. (C++ enum variant: RestoreProperties = 1)

Trait Implementations

impl Clone for RestorePolicy

fn clone(&self) -> RestorePolicy

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for RestorePolicy

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

Formats the value using the given formatter.

impl From<RestorePolicy> for c_int

fn from(value: RestorePolicy) -> Self

Converts to this type from the input type.

impl From<i32> for RestorePolicy

fn from(value: c_int) -> Self

Converts to this type from the input type.

impl PartialEq for RestorePolicy

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

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

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

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for RestorePolicy

impl Eq for RestorePolicy

impl StructuralEq for RestorePolicy

impl StructuralPartialEq for RestorePolicy