Struct IOPMSystemCapabilityChangeParameters 

pub struct IOPMSystemCapabilityChangeParameters {
    pub notifyRef: u32,
    pub maxWaitForReply: u32,
    pub changeFlags: u32,
    pub fromCapabilities: u32,
    pub toCapabilities: u32,
    /* private fields */
}

Available on crate feature pwr_mgt only.

A structure describing a system capability change.

A system capability change is a system level transition from a set of system capabilities to a new set of system capabilities. Power management sends a kIOMessageSystemCapabilityChange message and provides this structure as the message data (by reference) to gIOPriorityPowerStateInterest clients when system capability changes. Field: notifyRef An identifier for this message notification. Clients with pending I/O can signal completion by calling allowPowerChange() with this value as the argument. Clients that are able to process the notification synchronously should ignore this field. Field: maxWaitForReply A return value to the caller indicating the maximum time in microseconds to wait for the allowPowerChange() call. The default value is zero, which indicates the client processing has finished, and power management should not wait for an allowPowerChange() call. Field: changeFlags Flags will be set to indicate whether the notification precedes the capability change ( kIOPMSystemCapabilityWillChange ), or after the capability change has occurred ( kIOPMSystemCapabilityDidChange ). Field: __reserved1 Set to zero. Field: fromCapabilities The system capabilities at the start of the transition. Field: toCapabilities The system capabilities at the end of the transition. Field: __reserved2 Set to zero.

See also Apple’s documentation

Fields

notifyRef: u32

maxWaitForReply: u32

changeFlags: u32

fromCapabilities: u32

toCapabilities: u32

Trait Implementations

impl Clone for IOPMSystemCapabilityChangeParameters

fn clone(&self) -> IOPMSystemCapabilityChangeParameters

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for IOPMSystemCapabilityChangeParameters

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

Formats the value using the given formatter.

impl Encode for IOPMSystemCapabilityChangeParameters

Available on crate feature objc2 only.

const ENCODING: Encoding

The Objective-C type-encoding for this type.

impl PartialEq for IOPMSystemCapabilityChangeParameters

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl RefEncode for IOPMSystemCapabilityChangeParameters

Available on crate feature objc2 only.

const ENCODING_REF: Encoding

The Objective-C type-encoding for a reference of this type.

impl Copy for IOPMSystemCapabilityChangeParameters

impl StructuralPartialEq for IOPMSystemCapabilityChangeParameters