Type Alias AudioFileComponentExtensionIsThisFormatProc

pub type AudioFileComponentExtensionIsThisFormatProc = Option<unsafe extern "C-unwind" fn(NonNull<c_void>, NonNull<CFString>, NonNull<u32>) -> i32>;

Available on crate feature objc2-core-foundation only.

Apple’s documentation

Aliased Type

pub enum AudioFileComponentExtensionIsThisFormatProc {
    None,
    Some(unsafe extern "C-unwind" fn(NonNull<c_void>, NonNull<CFString>, NonNull<u32>) -> i32),
}

Variants

None

No value.

Some(unsafe extern "C-unwind" fn(NonNull<c_void>, NonNull<CFString>, NonNull<u32>) -> i32)

Some value of type T.