pub type T_VBVMR_GetLevel = Option<unsafe extern "C" fn(nType: c_long, nuChannel: c_long, pValue: *mut f32) -> c_long>;
pub enum T_VBVMR_GetLevel { None, Some(unsafe extern "C" fn(i32, i32, *mut f32) -> i32), }
No value.
Some value of type T.
T