pub type PWriteSeekProc = Option<unsafe extern "C" fn(arg1: vlLong, arg2: VLSeekMode, arg3: *mut vlVoid) -> vlUInt>;
pub enum PWriteSeekProc { None, Some(unsafe extern "C" fn(i32, i32, *mut c_void) -> u32), }
No value.
Some value of type T.
T