Type Alias ULSurfaceDefinitionDestroyCallback

pub type ULSurfaceDefinitionDestroyCallback = Option<unsafe extern "C" fn(user_data: *mut c_void)>;

The callback invoked when a Surface is destroyed.

@param user_data User data pointer uniquely identifying the surface.

Aliased Type

enum ULSurfaceDefinitionDestroyCallback {
    None,
    Some(unsafe extern "C" fn(_: *mut c_void)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(_: *mut c_void))

Some value of type T.