Type Alias LPDRVCALLBACK 

pub type LPDRVCALLBACK = Option<unsafe extern "C" fn(arg1: HDRVR, arg2: UINT, arg3: DWORD_PTR, arg4: DWORD_PTR, arg5: DWORD_PTR)>;

Aliased Type

pub enum LPDRVCALLBACK {
    None,
    Some(unsafe extern "C" fn(*mut HDRVR__, u32, u64, u64, u64)),
}

Variants

None

No value.

Some(unsafe extern "C" fn(*mut HDRVR__, u32, u64, u64, u64))

Some value of type T.