Struct IOBluetoothL2CAPChannelRef 

pub struct IOBluetoothL2CAPChannelRef { /* private fields */ }

Available on crate feature IOBluetoothUserLib only.

Apple’s documentation

Implementations

impl IOBluetoothL2CAPChannelRef

pub unsafe fn register_for_channel_close_notification( &self, callback: IOBluetoothUserNotificationCallback, in_ref_con: *mut c_void, ) -> Option<CFRetained<IOBluetoothUserNotificationRef>>

Available on crate feature objc2-core-foundation only.

Allows a client to register for a channel close notification.

The given callback will be called when the L2CAP channel is closed.

Parameter channel: The target L2CAP channel

Parameter callback: Callback to be called when the L2CAP channel is closed.

Parameter inRefCon: Client-supplied refCon to be passed to the callback.

Returns: Returns an IOBluetoothUserNotificationRef representing the outstanding L2CAP channel close notification. To unregister the notification, call IOBluetoothUserNotificationUnregister(void) with the returned IOBluetoothUserNotificationRef. If an error is encountered creating the notification, NULL is returned. The returned IOBluetoothUserNotificationRef will be valid for as long as the notification is registered. It is not necessary to retain the result. Once the notification is unregistered, it will no longer be valid.

Safety

• callback must be implemented correctly.
• in_ref_con must be a valid pointer.

Methods from Deref<Target = CFType>

pub fn downcast_ref<T>(&self) -> Option<&T>

where T: ConcreteType,

Attempt to downcast the type to that of type T.

This is the reference-variant. Use CFRetained::downcast if you want to convert a retained type. See also ConcreteType for more details on which types support being converted to.

pub fn retain_count(&self) -> usize

Get the reference count of the object.

This function may be useful for debugging. You normally do not use this function otherwise.

Beware that some things (like CFNumbers, small CFStrings etc.) may not have a normal retain count for optimization purposes, and can return usize::MAX in that case.

Trait Implementations

impl AsRef<AnyObject> for IOBluetoothL2CAPChannelRef

fn as_ref(&self) -> &AnyObject

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<CFType> for IOBluetoothL2CAPChannelRef

fn as_ref(&self) -> &CFType

Converts this type into a shared reference of the (usually inferred) input type.

impl AsRef<IOBluetoothL2CAPChannelRef> for IOBluetoothL2CAPChannelRef

fn as_ref(&self) -> &Self

Converts this type into a shared reference of the (usually inferred) input type.

impl Borrow<AnyObject> for IOBluetoothL2CAPChannelRef

fn borrow(&self) -> &AnyObject

Immutably borrows from an owned value.

impl Borrow<CFType> for IOBluetoothL2CAPChannelRef

fn borrow(&self) -> &CFType

Immutably borrows from an owned value.

impl Debug for IOBluetoothL2CAPChannelRef

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

Formats the value using the given formatter.

impl Deref for IOBluetoothL2CAPChannelRef

type Target = CFType

The resulting type after dereferencing.

fn deref(&self) -> &Self::Target

Dereferences the value.

impl Hash for IOBluetoothL2CAPChannelRef

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

Feeds this value into the given Hasher.

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

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Message for IOBluetoothL2CAPChannelRef

fn retain(&self) -> Retained<Self>

where Self: Sized,

Increment the reference count of the receiver.

impl PartialEq for IOBluetoothL2CAPChannelRef

fn eq(&self, other: &Self) -> 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 IOBluetoothL2CAPChannelRef

const ENCODING_REF: Encoding

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

impl Type for IOBluetoothL2CAPChannelRef

fn retain(&self) -> CFRetained<Self>

where Self: Sized,

Increment the reference count of the receiver.

fn as_concrete_TypeRef(&self) -> &Self

👎Deprecated: this is redundant

Helper for easier transition from the core-foundation crate.

unsafe fn wrap_under_get_rule(ptr: *const Self) -> CFRetained<Self>

where Self: Sized,

👎Deprecated: use CFRetained::retain

Helper for easier transition from the core-foundation crate.

fn as_CFTypeRef(&self) -> &CFType

where Self: AsRef<CFType>,

👎Deprecated: this is redundant (CF types deref to CFType)

Helper for easier transition from the core-foundation crate.

unsafe fn wrap_under_create_rule(ptr: *const Self) -> CFRetained<Self>

where Self: Sized,

👎Deprecated: use CFRetained::from_raw

Helper for easier transition from the core-foundation crate.

impl Eq for IOBluetoothL2CAPChannelRef