pub type LPALCRESETDEVICESOFT = Option<unsafe extern "C" fn(device: *mut ALCdevice, attribs: *const ALCint) -> ALCboolean>;
enum LPALCRESETDEVICESOFT { None, Some(unsafe extern "C" fn(_: *mut ALCdevice, _: *const i32) -> i8), }
No value.
Some value of type T.
T