Type Alias DADiskUnmountApprovalCallback 

pub type DADiskUnmountApprovalCallback = Option<unsafe extern "C" fn(disk: DADiskRef, context: *mut c_void) -> DADissenterRef>;

Type of the callback function used by DARegisterDiskUnmountApprovalCallback.

Parameters

• disk - A disk object.
• context - The user-defined context parameter given to the registration function.

Returns

A dissenter reference. Pass NULL to approve.

Discussion

The caller of this callback receives a reference to the returned object. The caller also implicitly retains the object and is responsible for releasing it with CFRelease.

Aliased Type

pub enum DADiskUnmountApprovalCallback {
    None,
    Some(unsafe extern "C" fn(*mut __DADisk, *mut c_void) -> *const __DADissenter),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut __DADisk, *mut c_void) -> *const __DADissenter)

Some value of type T.